united states department of interior geological …

UNITED STATES DEPARTMENT OF INTERIOR

GEOLOGICAL SURVEY

Analytical results of plant and soil samples collected near

Flat, Idltarod, and Llvengood, Alaska In 1984

By

B. M. Erickson, R. C. Severson, and J. G. Crock

Open-File Report 86-473

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.

1986

CONTENTS

Page

Introduction.............................................................. 1

Collection Methods and Sample Descriptions................................ 1

Vegetati on Samples................................................... 1

Soil Samples......................................................... 1

Analytical Methods........................................................ 3

Soil and Plant Preparation........................................... 3

Total Element Content Determinations................................. 3

Coding Explanations for Tables 5 and 6.................................... 3

Acknowledgments........................................................... 4

References Cited.......................................................... 5

ILLUSTRATIONS

Figure 1. Map showing the general sampling locations..................... 2

TABLES

Table 1. List of vegetation species samples at Flat (FT-),Iditarod (ID-), and Livengood (LV-), Alaska.......................... 6

Table 2. Descriptions of the soil profile samples at Flat (FT-),Iditarod (ID-), and Livengood (LV-), Alaska.......................... 7

Table 3. Methods used for total element content of plants and soils...... 8

Table 4. Methods used for extractable element content of soils........... 9

Table 5. Analytical results for plant samples collected near Flat,Iditarod, and Livengood, Alaska...................................... 10

Table 6. Analytical results for soil samples collected near Flat,Iditarod, and Livengood, Alaska...................................... 18

INTRODUCTION

In late August of 1984, we collected samples of native plants and soil profile horizons in three areas of Alaska. Two of the areas are represented by sampling sites near active placer operations (the Golden Horn mine near Flat, and Lillian Creek near Livengood), and the third (near Iditarod) is a site with no known placer gold (fig. 1). An additional soil sample was collected from the active placer operation at Lillian Creek from the area described by the operator as the "pay zone." Two additional plant species were collected from the tailings piles at the abandoned Golden Horn mine at Flat, and samples of moss and horsetail were collected from Lillian Creek, close to site LV-2.

All samples were collected as part of a preliminary reconnaissance-type sampling program to determine if gold is mobile under present-day conditions.

COLLECTION METHODS AND SAMPLE DESCRIPTIONS

Vegetation Samples

Representative plant species (table 1) from each level of the forest canopy were collected as close as possible to the soil-sampling sites. The terminal (18-30 cm) growth of tree and shrub species was collected using stainless-steel clippers. The herbaceous samples (fireweed and horsetail) consisted of the above-ground parts; the mull samples were collected from the living top layer of the soil profiles; and the Reindeermoss samples were composited from the area surrounding the soil-sampling sites.

Of the 13 species collected, only labrador tea occurred at all sites. There is a species difference between the samples of birch trees at Livengood (River Birch), and Iditarod and Flat (Paper Birch). Alder was collected at all sites except FT-2, and reindeermoss at all sites except the background site (ID-3). Dwarf birch, blueberry, willow, and fireweed were not found at the Livengood area. Hemlock was sampled at FT-1 and ID-3, tamarack at FT-2, and white spruce at L.V-1 and LV-2. A sample each of horsetail and moss were collected from Lillian Creek (close to LV-2). Horsetail was also colleted from the old tailings pile at the Golden Horn mine along with fireweed.

Soil Samples

At the Iditarod and Livengood sampling locations, small pits were dug to a depth of about 1 m; at the Flat sampling locations, the side walls of 2-m- deep exploration trenches were sampled after digging to expose fresh material. At all locations, the various soil horizons were identified and described, and two samples of each horizon were collected in 1 1 nitric-acid- washed polypropylene bottles. Three additional samples were collected in the main "pay zone" directly above the weathered bedrock at the active placer operation in Livengood. A large sample from this "pay zone" (sample LV-4) was panned in the field and the recovered gold was saved for additional observations and analyses.

Brief descriptions of the soils collected at the three locations are given in table 2. Acronyms describing the profiles correspond to the locations in figure 1. All soil profiles, except LV-2, contain only an organic-rich surface horizon over parent material and, therefore, show minimal soil development. Profile LV-2, collected from a side slope above Lillian Creek (fig. 1), contains a buried surface horizon. The side slopes at this

Figure 1. General location map showing the sampling locations at Iditarod, Flat, and Livengood, Alaska.

2

location consist of a series of buried organic horizons, probably due to solifluction and surface creep. All soil profiles sampled suggest constant oxidizing conditions in the surface horizons, and alternating oxidizing (dry) and reducing (water-saturated) conditions in the C-horizon. The sample from the placer mine (LV-4) has the characteristics of the soil C-horizons.

ANALYTICAL METHODS

Soil and Plant Preparation

The soils were dried under forced air at ambient temperature, classified, and disaggregated. The minus 10-mesh fraction was used for all analytical work. A small split of this material was ground in an agate shatter box to pass 100 mesh and was used for all total analyses.

The vegetation materials were dried at 50°C for 1 week in a forced air oven, ground with a Wiley mill, and split. One set of split samples were ashed at 500°C for inductively coupled plasma-atomic emission spectroscopy and the unashed or raw samples were submitted for neutron activation analysis.

Total Element Content Determinations

Table 3 lists the methods used for total element determination. All analyses were performed at the USGS Analytical Chemistry Laboratories, Denver, CO. Table 4 lists the methods used for the extractable elements.

CODING EXPLANATIONS FOR TABLES 5 and 6

The first character of the sample identification (A) in table 5 indicates the vegetation samples were collected in the State of Alaska, and the second and third characters represent the geographical sampling locations within the state (ID = Iditarod or Flat areas; LV = Livengood area). The fourth character (4) indicates the year of collection, 1984. The fifth character (1, 2, or 3) represents the sampling site within a geographical location. The sixth and seventh characters of the sample identification indicate the plant species collected, as follows:

AL - AlderBB - BlueberryDB - Dwarf BirchES - HorsetailFW - Fi reweedLL - TamarackLT - Labrador TeaMH - Mountain HemlockRM - ReindeermossTB - Tree Birch or Paper BirchWS - White SpruceWW - Willow.

Where present, the eighth character (x, or -), indicates a split, and the ninth character (1, or 2) the locality within a sampling site.

The characters following the element symbols indicate units of measurement and analytical methods, respectively:

Units of Measurement

ppm - parts per millionppb - parts per billion

% - percent

Analytical Methods

n - neutron activation analysiss - inductively coupled plasma-atomic emission spectroscopy blank - continuous flow hydride generation-atomic

absorption spectroscopy

The following list interprets the symbols used in table 6. The fourth through eighth characters of the sample identification indicate soil horizon according to the U.S. Department of Agriculture (1952) nomenclature. The characters following the element symbol indicate units of measurement- analytical method, respectively:

Units of Measurement

ppm - parts per million ppb - parts per billion

% - percent mmhos/cm - milimhos per centimeter

Analytical Methods (Methods p and w represent an extractable fraction of the total element content in the sample; the remaining methods represent the total content.)

c - continuous flow cold vapor-atomic absorption spectroscopy

h - continuous flow hydride generation-atomic absorption spectroscopy

p - 20 gm soil extracted with 100 ml hydrogen peroxide- acetic acid

s - inductively coupled plasma-atomic emission spectroscopy

w - 20 gm soil extracted with 100 ml water

ACKNOWLEDGMENTS

The authors wish to thank John Miscovitch of the Golden Horn mine, Flat, Alaska, and E. W. Montgomery of the Nugget Estate Mining Company, Livengood, Alaska for their generous help in our sampling of their properties. The authors also wish to thank the various analysts with the U.S. Geological Survey, Analytical Labs for their support.

REFERENCES CITED

Crock, J. G., and Lichte, F. E., 1982, An improved method for thedetermination of trace-level arsenic and antimony in geological materials by automated hydride generation-atomic absorption spectroscopy: Analytica Chimica Acta, 144, p. 223-233.

Crock, J. G., Lichte, F. E., and Briggs, P. H., 1983, Determination ofelements in National Bureau of Standards Geological reference materials SRM 278 Obsidian and SRM Basalt by inductively coupled argon plasma- atomic emission spectrometry: Geostandards Newsletter, 7, p. 335-340.

Crock, J. G., and Severson, R. C., 1980, Four reference soil and rock samples for measuring element availability in the western energy regions: U.S. Geological Survey Circular 841, 16 p.

Koirtyohann, S. R., and Khali 1, Moheb, 1976, Variables in the determination of mercury by cold vapor atomic absorption: Analytical Chemistry, 48, p. 136-139.

Severson, R. C., Crock, J. G., and McConnell, B. M., 1985, Processes in the formation of crystalline gold in placers: Conference Proceedings, The 1985 Symposium on Organics and Ore Deposits sponsored by the Denver Region Exploration Geologists Society, 34 p.

Thompson, C. E., Nakagawa, H. W., and Van Sickle, G. H., 1968, Rapid analysisfor gold in geological materials: U.S. Geological Survey ProfessionalPaper 6008, p. B 130-132.

Wershaw, R. L., Fishman, M. J., Grabbe, R. R., and Lowe, L. E., 1982, Methods for the determination of organic substances in water and fluvial sediments: U.S. Geological Survey Open-File Report 82-1004, p. 25-26.

Table

1.

List o

f ve

geta

tion

sp

ecie

s samples

at F

lat

(FT-), Id

itar

od (ID-), an

d Li

veng

ood

(LV-

), Alaska

Spec

ies

collected

Forest M

ull *.

....

....

....

....

............................................

Cladonium

rang

ifei

na (Reindeer

moss).....................................

Equisetum

pratense L

. ( Horsetai

1 **)......................................

Epilobium

angu

sti fo

lium

L.

subs

p. an

gust

i fo

lium

(F

irew

eed*

* ).............

Ledum

palustre L.

su

bsp.

decumbens

(Ait.) Hult.

(Labrador

tea). ..........

Betula n

ana

L. su

bsp.

exilis (Sukatusch.) Hu

lt.

(Dwa

rf b

irch) ..

....

....

..

Vacc

iniu

m uliginosum L

. su

bsp.

alpinum

(Bigel.) Hult.

(Alp

ine

blueberry)

Alnus

incana (L.) Mo

ench

(A

lder

) .........................................

Sali

x sp

. (W

illo

w)..

....

....

....

....

....

....

....

....

....

....

....

....

....

.

Betu

la o

ccid

enta

l is Ho

ok (Tree

birc

h) ...

....

....

....

....

....

....

....

....

.

B. pa

pyri

f er

a Ma

rsh,

su

bsp.

humilis

(Regel)

Hult.

(Paper bi

rch)

....

....

..

Tsuga

Merten

siana

(Bong.)

Sarg.

(Mou

ntai

n hemlock). ......................

Pice

a gl

auca

(Moench) Vo

ss (W

hite

spr

uce)

....

....

....

....

....

.. ..........

Lari

x laricina (D

u Roi) K.

Ko

ch (Tamarack).. ...

....

....

....

....

....

....

..

"FT-

1

X X X X X X X X X

FT-2

X X X X X

X X X X X X

Site

s

ID-3

X X X X X XX X X X X

LV-1

LV-2

X X

X

X

X X

X X

X X

X X

*Ana

lysi

s pe

ndin

g.

**Collected

also a

t abandoned

Gold

en Ho

rn m

ine

site

nea

r si

te F

T-2.

Table 2. Descriptions of the soil profiles samples at Flat (FT-), Iditarod (ID-), and Livengood (IV-), Alaska

Horizon description

01 02 Cl C2

Living moss mat 01 Al Cl C2g

IIC3 11C4

Fibric peat 02 Cl C2

C3

02 Cl C2 C3 IIC4

01 02 Cl Alb C2 C3 C4

Undefined

Depth (cm)

0-14 14-24 24-36 36-90+

0-12 12-15 15-37 37-50 50-60

60-80 80-120+

0-20 20-23 23-43 43-50

50-70

0-4 4-17 17-26 26-55 55-70+

0-8 8-11 11-19 19-24 24-33 33-74 74-90+

8+ meters

MatrixWet color

1 10YR3/4 2 2.5Y5/4 2.5Y5/4

10YR3/2 2.5Y4/4 2.5Y5/4

10YR4/4 10Yr5/6

10YR2/1 2.5Y5/2 2.5Y3/2

2.5Y4/2

10YR2/2 2.5Y5/4 2.5Y4/4 2.5Y4/3 10YR5/5-5/6

N2/0 10YR3/2 N2/0 10YR3/1 10YR3/2 10YR3/3

Dry color

10YR5/3 2.5Y6/3 2.5Y6/4

10YR5/3 2.5Y6/3 2.5Y6/3

10YR6/5 10YR7/6

10YR3/2 2/5Y6/2 2.5Y5/2

2.5Y7/2

10YR3/2 2.5Y6/3 2.5Y6/2 2.5Y7/2 10YR4/3

10YR3/2 10YR5/1 10YR4/2 10YR5/2 2.5Y5/2 2.5Y5/3

mottled matrix

Wet Color Dry color Abundance

FT-1

10YR5/8 10YR6/8 1% 10YR5/8 10YR6/8 20%

FT- 2

not sampled not sampled

2.5Y5/2 2.5Y7/0 30% 7.5YR4/4 7.5YR5/8 30%

ID-3

not sampled

7.5YR4/4 7.5YR5/6 - 30% 7.5YR4/4 7.5YR5/6 10%

7.5YR4/4 7.5YR5/6 20%

LV-1

--

LV-2

not sampled

LV-4

2.5Y4/3 2.5Y5/2 70% 5YR4/6 10YR6/6 30%

Description

Root mat Silt Silt Silt

Silt Silt Silt

Transition zone Weathered monzonite

Highly organic Silt 2.5Y3/0 organic stains between varve-like layers Silt

Highly organic Silt Silt Silt Sand and gravel

Highly organic Silt Highly organic silt Silt Silt Silt

Silt

*Not present or determinable. 2Munsell color notation.

Table 3. Methods used for total element content of plants and soils

[AAS = atomic absorption spectroscopy; ICAP-AES = inductively coupled argon plasma-atomic emission spectroscopy; and NAA = neutron activation analysis ]

Element Method Reference

As, Sb Hydride generation-AAS Crock and Lichte, 1982.

Hg Cold vapor-AAS Koirtyohann and Khali 1, 1976.

C, S Leco standard combustion Standard manufacturer techniques

Au (soils) HBr-Br2 digestion, AAS Thompson and others, 1968.

44-element scan ICP-AES Crock and others, 1983.

Au (plants) NAA, raw material Standard manufacturer techniques

Table 4. Methods used for extractable element content of soils

[HOAc = hydrogen peroxide-acetic acid]

Element/Parameter Method Reference

pH

Organic Au

Water-extractable Au

Total organic carbon

Specific conductivity

Water-solubilized cation and anions

Soil slurry

digest -AAS

Water extraction

Wet oxidation

Myron L DS meter

Ion chromatography

Crock and Severson, 1980.

Severson and others, 1985.

Severson and others, 1985.

Wershaw, 1982

Standard manufacturer technique

Standard manufacturer technique (Dionex, Inc.)

Tabl

a 5.

--

Analytical results for

plant samples collected near Fl

at,

Idit

aror

i, an

d Liven-joo*,

Alaska.

IN,

not

detected; <,

detected bu

t below the

limit of determination sh

own;

>, determined to

be greater than the

valu

t* shown.1

Sample

AlAs

ppm-s

As

ppm

As ppm-n

Au ppb-n

Pa ppm-s

Pe ppm-s

Br ppm-n

Ca

%-s

Cd

ppir

.-s

Plan

t samples collected ne

ar Flat,

Alaska location-1 (FT-1).

AIDI41AL

AIOU1ALX

AIDU1BB

AIDU1PP

Aioume

A I D U

1 F K

ATDU1FWX

AIDU1IT

AIDU1MH

AIDU1MHX

AIDU

1R!*

AIDU1TP

AIDU1TBX

AID41KW

AIDU1WWX

1.70

1.80 .9U

2.20

.143

.72

.80

3.60

.38

.UO

7.30

.18

. 19

.38

.UO

<20

<20

<20 140

<20

<20

<2C 60

<20

<20 70

<20

<20

<20

<20

1 .10

-- .70

.90

< .

1 Z

1.3C

1.30

1.10

.50

< .

1 0

2.30

.20

.20

.10

. 1 U

1.10 -- -- -- .11

1.20

--1 .5

0.1

3--

3.00

. 2U .38

-- --

7.- - - .

2.-

2.. -

5.. . - -

90 - - - 80 20 - UO UO - 2C 80 80 - -

880

1,800

600

790

1,500

1,700

670

UOO

920

9ur

930

1,50

02,300

900

260

<2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2 <2

1 .4

0

.57

?.UO

.61

2.60

2.00

1.20

1.20

Plan

t samples collected near Flat,

Alas

ka location-2 (FT-2).

Plant samples collected ne

ar liitarod, Alaska location-3 (I

D-3)

ATD43AL

AIPU3BB

AID43DB

AIDU3DBX

AIDU3FM

AID43E3

AIDU3LT

AIDU 3

¥H

AI043FHX

AIDU3TB

A1D43WW

.06

.35

.20

.22

. 19

.OU

.30

.27

.27

.OU

.08

<20

<20 2C 30 50

<2C

<2P

<T20 20

<20

<2C

.UO

.33

.'40

-- u.co -- .20

-- .30

. 1 c

. 3^

<.3C

<.20 -- --

<.(40

.25

.32

.11

< . 10

--

<2.00

--<2.00

-- --< U

. 0 C

2.70

<. 8"

<.80

<1.00

--

990

U60

1,300

1 ,300

1 ,100

520

1 ,000

770

790

930

790

<2

<2

<2

<2

<2

<2

<2

<2

<2

<2

<2

153.00

176.00

373.00

30.90

58.00

51 .00

, 105.00

19.0

17.0

15.0

17.0

17.0

18.0

16.0

19.0

19.0

3.0

20.C

21 .0

17.0

17.0

AIDU2FS-1

AID!4?LSX1

AIDU2ES-2

AID42F^X2

ATOU2BB

AIDU2DB

AIDU2DBX

AIDU2FW

AIDU2FWX

AID42FW-2

ATDU2LL

AIDU2L1X

A1D42LT

ATDU2LTX

AIDU2TR

A1DU7TBX

h I D 4 2 V

tfA1DU2WWX

.143

.39

1.DO .51

.35

.50

.09

3.30

. 18

. 17

1.80

1 .9

C.68

.71

.16

. 1 5

.38

.37

<20

<2C' UO no UO '»0

UO<2C 30 20 140

5n

90 60 90 3C

<20

<20

3.70

7.6°

.58

2.7C

5.80

2.20

1 .UO

1 .7

01.10

.20

.63

.56

1 .00

.62

.6f

-- -- .146

.79

.52

1.77

1 .70

-- .93

-- .73

.6^

-- -- --

-- -- .9R

2.90

3.50

7.70

9.30

--11.60

-- --10.50

.UO

-- -- --

870

831

2,100

?,200

850

1 ,300

1,100

1 ,000

6140

620

750

2UO

3(40

1,000

250

840

160

520

<2

<2

<2 <2 <2 <2 <2 <? <2 <2 <2 <2 <2 <2 <2 <2 <2 <2

-- -- 1. 1C

1 .3

01

. UO

3.60

U.33

--1.

140

--

--

1.UO

1 .5

0-- -- --

9.1

9.2

11.0

12.0

16 .0

17.0

17. G

15.0

25.0

2u .:

>15.0

16.0

1 9

. u2C

.0

1Q.0

2^.0

13.

G18.0

18 .

^'

16.C

17.0

2U.O

13 .C

19.0

26.0

^6.0

21.0

22.0

h R u

«4

153

me 1 1 <u HP 18 HI 13 3?

31

Teble 5.

--

Analytical results fo

r pl

ant

samples collected ne

ar Fl

at,

Iditarod, and

Livengood, Alaska.--Cent

Sample

Ce ppm-s

Co ppm-s

Cr ppm-s

Cu ppm-s

Fe

%- ?

K

%-s

La ppm-s

La ppm-n

Li

ppir.


ar Fl

at,

Alaska location-1 (FT-1). Continued

-s

Mn

AIDU1AL

AIDU1ALX

AIDUIBB

AIDU1BB

AIDU1DB

AIDUIFW

AinuiFWX

AID141LT

AIDU1MH

AID141MHX

AinmRK

AIDU1TB

AIDU1TBX

AIDU1WW

MD141WWX

25

30 <8 1<»

<8 19 ia U2

<B

<8 63 1 1

<8 U5 38

AID<42E?-1

AIDU2ESX1

AIDU2ES-2

AIDU2ESX2

AIOU2BB

AIDU2DB

AIDH2DBX

AIDU2FW

AIDU2FHX

AIDU2FW-2

AIDU2LL

AID142L1X

AIDi42LT

AIDa2LTX

AID142TB

A1DU2TBX

AIDU2WW

AID42WWX

10 15 <8 <B <8

<8

<8 33

33 28 <B 9<8 <8<B

<8 18 17

AIDU3AL

RIDU3BB

AIDU3DB

AID143DBX

AIDU3FW

AIDU3LT

AIDU3MH

AIDH3MHX

A1UU3TR

AIDI43WK

<8

<8

<8

<8

<8 <e <8

<B

<8

<8

1. 10

.06

1.30

.72

.oa

. 17

. 17

Plan


ar Fl

at,

Alaska location-2 (FT-2). Continue^

16 16 13

'23 11 17 25 (42 5 6

85 8 7 U 5

2UO

250

330

250

52090

100

310

180

210

230

230

210

130

130

1. 10

1.1D

.60

1.UO

.142

.38

.45

2.50

.20

.23

3. HO

. 18

. 18

. 12

. 12

11.0

11.0

16.0

1U.O

16.0

22.0

22.0

12.0

17.0

17.0

5.6

16.0

15.0

?U.O

2U.O

15 19 6 12 <H 20

23 27 <H <U 32 H <u l»1 U1

6 5 q<u 8 7

15 39

p 91U 13 11 1

111 28 5 610 105 6 7 8

65 65

16 23 30 19 U3 17 16

270 9 830 37 15 177 7

1C 10

30 8*4

130

93

220

31C

2UO

100

120

120

180

190

220

220

200

210

170

160

.25

.25

.53

.36

.31

.50

. U

12

.80

.23

.22

.88

.98

,U7

. U

5.

19.

19.2

7.2

6

m.o

12

.07

. -5

8.8

17

.01

6,0

16.0

13..0

17.0

18

.01U

.O114.0

18

.017.0

13

.01

4.

021.0

21

.0

6 5 6 6

180

2UO

230

220

110 58

280

100 97

72 Pc

.12

.21

.23

.26

. 17

.01

.20

.20

. 19

,OU

.09

17.0

16.0

17.0

17.0

16.0

9.1

17.0

12.0

12. J

11.0

<u

<u

<u <u

<u

<. 10

,20

,02

,05

,05

25,000

2 u,

r <: c

53,

003

50,uOO

(43,

000

in,: c

a15,OCJ

32,000

50,000

5 (4

, C 0 0

5, 3 C j

30,000

30,000

15,000

16,00"

eu:

.03

.05

.04

1.90

1.90 -- .05

-- -- .05

.014

-- -- --

<n 00

<4H,OCC

39,003

3 8

, 0 u

C11

1 ,

" r J

10,GC^

<. 06

 8,000

70,000

2,1Cj

f'K

f, 1

, C

' 0

5 3

, r 0 H

51,000

3,2(0

Table 5.

--


plan


ar Flat,

Iditarod, and

Livengood, Alaska. Continued

Ho ppm-s

Na

%-s

Nb ppm-s

Nd ppm-s

Ni ppm-s

P%-

s Pbppn-s

Sb

ro

AID41AL

AID41ALX

AID41BB

AID41PB

AID41PB

AID41FW

AID41FWX

AID41LT

AID41MH

AID41MHX

AIPIMRM

AIP41TR

AID41TBX

ATD41WH

AIP41WWX

7.5

7.5

5.6

5.4

6.7

7.9

8.3

4.0

4.9

5. 1

2.6

6.5

6.7

4.7

4 .9

<4<4

<4<4 <4

<4 4

<4<4

<4<4<4

<4<4

<4

.12

. 14

. 14

.20

.11

.17

.19

.23

.08

.08

1 .20

.06

.06

.05

.05

Plant

samples collected near Fl

at,

Alaska location-1 (FT-1).--Continued

<8

<8

<8

<8

<8 <8

<8

<8

<8 <8

Plant


ar Flat,

Alaska location-2 (FT-2). Continued

17 15 <8 13 <8 9

<8 15

<8

<825

<8 <8 15 35

200

190

110

93 92 26 28 71 5557

446767

160

17J

6.30

5 .2

07.60

6.20

8.20

3.00

3.20

4.80

5.30

5.70

1 .20

8.60

8.90

6.80

7.10

<8<8 917 <8 19

<8 16 <89

30

<8

<8

<8 <8

AID42ES-1

A1P42ESX1

AID42ES-2

AID42PSX2

AID42RB

AID42DR

AID42DBX

AID42FH

AI042FWX

AID42FW-2

AID42LL

AID42L1X

AID42LT

AID42LTX

AID42TB

AID42TBX

HID42KW

AID42WWX

3.1

3.2

3.9

3.8

6.8

6.5

6.6

7.4

4.7

".6

4.7

4.8

5.0

5.2

9. 1

9.4

6.0

6.0

<4<4

<4

<4<4

<4<4<4<4

<4

<4<4

<4<4<4

<4<4<4

20 19

26 19 16 16 16 66 15 14 35 38 18 20 15

.14 15 15

<8<8

<8 <8<8

<8

3

21.0 75

73 8789

46 46 91 04

140

140

.84

.85

1 .10

1 .1

08.50

8.30

8.40

2.20

3.30

3.20

5.10

5.40

5.40

5.60

7.4P

7 .4

05.40

5.40

<8

<8 <8 <8 9 814 <8<8

<8 12 16 <8

<8 <8<8

<8

<8

pym

.05

<4

.25

.27

.04

.24

.25

. 15

.05

.°8

.44

.03

. "2

<.02

.12

<4 4<4<4

<4 7<4<4 13

<4

<4<4<4

. 1B

__ .29

-- .11

.05

.02

. 10

.12

.23

. 12

<.02

.04

.07

.05

.15

.16

<4<4

<4 <4 <4 <4

<4 11

<4<4<4

<4

<4

<4 <4

<4 <4

Plant samples collected near Id

itar

ocl,

Alaska location-3 (in-3

) .--Continued

AID43AL

AID43BR

AID43DB

AID43DBX

AID43FW

AID43FS

AID43LT

AID43MH

AI043KHX

AID43TB

6.7

6.8

6.5

6.7

7.0

4.?

5.0

2.5

2.5

5.3

6.6

4<4

<4

<4

<4

<4

<4

<4

<4

<49

,C5

,08

.09

,09

,22

,11

,0^

OB

,08

,03

,08

<8

<8

<8

<R <8

<8

<8

<8

<8

<8

<8

<8

<8

<8

<8

<8

<8

<8

2

<.02

.02

.02

<4 <4

<4

<4 <n

Table 5.

--


r pl

ant

samples co

llec

te-1

ne

ar Fl

at,

Iditarod, and

Livengood, Alaska. --Cent

inue

ri

Sample

Sr ppm-s

Th ppm-s

Ti

*.-s

V ppm-s

Y ppn-s

Yb ppm-s

7,n

ppm-s

Plan


ar Flat, Alaska location-1 (FT-1). Continued

AID41AI,

AID41ALX

AID41BB

AID41BB

AIP4 H~>

BAID41FW

AID41FWX

AID41LT

A1D41KH

AID41MHX

AID41RM

AID41TB

AID41TBX

AID41WW

AID41WWX

1,600

1,700

500

460

760

1,200

1,300

380

400

U10

190

1,400

1,500

1,900

2,000

<8 <8 12 15 <8 <8

<P <R 12 149

<8 10 <8 12

AID43AL

ATD43BB

AID43DB

AID43DBX

AID43FW

AID43E?

AID'43LT

AID43MH

A1D43KHX

AID43TR

1,UOO

830

600

510

1,400

790

300

450

440

1,200

1,UOO

AID42K3-1

AIDU2FSX1

AIP42F5-2

AID42ESX2

UD42

rifc

AID42Dd

AIDU2DBX

A1D42FK

AIP42FWX

MD42FW-2

AID42LL

AID42L1X

AIDU2LT

ATP42LTX

AID42TH

A1D42TBX

AID42WW

Mn42W',IX

750

760

1,000

1,100

390

450

U30

1,800

2,500

2,500

500

510

190

200

670

700

1,8CO

1,800

<8 <8 <8 <8 14 <P 13 <8 <8 <8

<8 <8 169

<P9

<R8

05

05 03

07 02 02 03 15 01 01 31 01 01 01 01

1 F

166

24 <4 4 5

46 <4

<4

110

<4<4

<4<4

2628 513 <4 13 13 27<4

<4 174

<444

46

<2

<2

<2 <2

<2 <2

<2

<2 2

<2

<2

<2

96P

94D

6,500

4,100

8 ,100

7RG

820

1,300

2,000

2,100

520

3,000

3 ,100

3 ,4

r 0

3,600


ar Flat,

Alas

ka location-? (FT-2). Continued

02

02 05

03

02

03 02 22 01 01 05 07 03 C3 01 01 01 02

6 R13 Q

<4<4<4

7«<4<4 17

1P <4<4

<4<4<4<4

7 8 7 6<4<4<4 15

21 20 4

<4

<4<4<4<4 8 7

<2

<2

<2

<2

<2 <2 <2

<2<2<2

<">

<2<2

<2

<?

<?.

<2<2

110

11C

270

27T

6,20C

10,030

9 ,800

24f

200

190

1 ,300

1 ,400

1 ,100

1 ,100

5,9^0

6,000

3,300

3 ,400

Plant

samples collected near Iditaroi, Alaska location-3

( ID-3

) .--Continued

<8 <8

25 19

<8

<8 20

15

13

<8

<8

,01

,01

,02

,01

,01

,01

<4 <4

<4<4<4<4

<4<4

<4<4

<4

<4<4

<4<4<4<4

<4<4

<4<4

<4

<?<2

<2 <2<2<2

<2<2

<2 <2

<2

790

1 ,800

7,500

7,200

27 0

28C

1,100

2,40C

2,400

3,100

2 , 3 C 0

TaMe 5.

--


r pl

ant


ar Plat, Iditarod, and

Livengood, Alaska.--Cont ii nutd

Saiiple

AlAs ppm-s

AsPp

mAs

ppm-n

Au ppb-n

Ba ppm-s

Be ppii-s

Br ppm-n

r rt

p p. m -

Plan

t samples collected near Livengood, Alaska location-1 (L

V-1)

ALV

I41&

LA

LV14

1ALX

AL

VU

1LT

ALV

141R

MA

LV41

RM

XA

LV14

1TB

XA

LVU

1WS

AL

V41

K3X

.92

.90

1.3

08

.00

7.9

01.3

0.6

0.6

3

130

120

270

2,3

00

2,3

00

330

150

160

5.0

05.1

07.5

0510.0

05

30

.00

12.0

06.1

06.3

0

5.9

05.1

08.9

8396.0

0399.0

01

1 .f

iO--

--

13.

6C13.0

061

.U

O3

2.

CO3

7.0

0U

8 .8

0-- --

5RO

620

(420

1 ,U

OO

1,1

400

1,0

00

2,14

002,4

00

<2

<2

<2 2 3

<2

<2

<2

2.2

02.

10.5

82

.80

3.

101

.20

--

--

20.0

2C .

01

8.

01

.U1

. 3

18 .

021.0

22.0

Plant samples collected near Livengood, Alaska location-2 (L

V-2)

AL

VU

2AL

ALV

142E

5A

LV

I42F

SXA

LV

I42L

TA

LV14

2LTX

ALV

142T

BA

LVU

2W3

ALV

142W

5X

.93

.73

.85

1.8

02

.00

.80

3.1

03.2

0

150

1,1

00

1,2

00

290

310

130

800

820

5.7

0230.0

0

9.7

1--10.0

03.6

0uo

.oo

39.0

0

6.6

027(4

.00

--1

1.2

0--

14. U

C__ --

(48.9

031

.14

0--

10

6.0

0--

37.7

0-- --

970

320

3UO

750

020

870

1,900

1,900

<2

<2

<2

<2

<2

<2

1.10

23.00

.58

1U.O

9. 1

9.2

1U.O

1b.O

11 .0

13.0

13.0

15

Table 5.--


plan

t samples collected near Fl

at,

Iditarod, an

d Livengood, Maska.--Continuei

Sample

ALVU1AL

ALV<

41AL

XAT.vmLT

ALVH1RM

ALV41RMX

ALVU1TBX

Ce ppm-s

Co ppm-s

Cr ppm-s

Cu ppm-s

Fe

JJ-s

KLa

ppm-s

La ppm-n

Li ppm-s

Mn pp

m-'

ALVU1WSX

Plan

t samples collected near Livengood, Alaska location-1 (L

V-1

) .--Continued

<8

<8

58

6(4

17

<8

<8

11 11 10 31 31 267 8

17 19 37220

2UO 39 17 22

170

180

2UO 91 PC

1PO

100

100

1.13

1. 10

.96

6.00

5.9?

1.30

.50

.55

15.0

15.0

1*4.

02.

*2.8

12.0

12.0

12.0

<U <u 6 33 376

<U <U

.27

.25

.25

7 .UO

7.50

.37

--

--

<I4

<14 e

145

145 8 6 c,

Plant samples collected near Livengood, Alaska location-2 (LV-2).--Continued

ALVH2AL

ALVU2ES

ALVt

42FS

XALVU2LT

ALVH2LTX

ALVH2TB

ALVU2WS

ALV42WSX

<8 15 17 16 15 <8 26 29

10 9 7 9119

2U 19 22 57 55 2U

,

250

74 8221C

210

3CO

.81

1.20

1.30

1 .30

1.UO

.77

1U.O

10.0

Q.9

1U.O

1U.O

1U.O

20 ia99 81

98 1CO

2.80

2.80

10.0

10.0

14 7 8 9 9

16 16

.24

2.80

6 710 115

22 19

1U ,

0 0 0

21,000

1 ,ocn

17 ,

0 fO

12,0:

:

9 , B C 0

?T

2F-:

7 , 0 0 D

6 , ?

[ :16,000

9, 1

rO

9,200

Table 5.--


r pl

ant


ar Fl

at,

Iditarod, and

Livengool, Al

ask

*.--Continued

Sample

%-s

Ho ppm-s

Na

%-s

Nb ppm-s

Nd pp

fli-

s Ni

ppm-s

%-s

Pb ppm-s

Sb

ppm

Sc pp

it-b

ALV41AL

ALV41ALX

ALV41LT

ALV41RW

ALV41RKX

ALV41TBX

ALV41WS

ALV41W5X

6.3

6.4

5.9

2. 1

2.0

P. 2

2.5

2.7

19 219 7 7

<4 <4 <4

.07

.08

. 14

.75

.73

.11

.06

.06


ar Livengood, Alaska location-1 (LV-1).--Continued

<8

<8 <8

<8

<R<8 10 31 31 16 10 <8

240

240

100

200

190

160

4R

51

3.80

3.90

4.80

.38

.37

5.00

3.70

4.00

8<8 1 1

4544 17 810

181

Plant

samples collected near Livengood, Alaska location-2 (LV-2) .--Continued

ALV42AL

ALVU2KS

AL742E3X

ALV42LT

ALV42LTX

ALV42TB

ALV42W5

ALV42WSX

14.0

5.3

5.3

P. 1

8 .4

17.0

4.7

4.8

<4

<4 <4 <4 <4 <4 <4 <4

.10

.10

. 11

.21

.23

.08

.25

.26

11 <R

<8<R <8

<8 <R '8

<8 10 15 8

<8

<8 916

2<n 56 58 81 R3

270

170

170

3.10

.66

.66

4.70

4 .70

4.50

2.60

2.70

1C <8

<P 11 15 1 1

31 30

,47

,48 30 10

.57

1 .70

.95

.96

.42

2.80

2.80

19 19 <4 <4

<4

<H U 4

<4 P. F

o C;

1

Table 5.--


plant

Sample

Sr ppm-s

Th ppm-s

Ti

7.-s

V

Plant

samples collected

ALV41AL

1,700

<8

.03

ALV41ALX

1,700

<8

.03

ALV-41LT

UUO

<8

.OU

ALV41RM

250

14

.44

ALV41RMX

240

<R

.39

ALVU1TBX

1,UOO

<8

.08

^

ALV41WS

970

<8

.03

ALV41R5X

1,000

<8

.03

, " '-

Plant samples collected

ALVU2AL

780

<8

.05

ALV42RS

610

<P

.03

ALV42ESX

520

<8

.04

ALVU2LT

420

<8

.01

ALVU2I.TX

430

<8

.08

ALVU2TB

590

<8

.04

ALVU2HS

800

<8

.14

ALVU2HSX

830

<8

.15

(" i " r-

samples collected near Flat,

Tditarod, and

Live

ppm-s

Y pp

ii-s

Yb

ppm-s

Zn ppm-s

near Livengood, Alaska location-1 (LV-1

) .--Continued

15

<4

<2

1,200

» 15

<4

<2

1,200

32

<4

<2

R?0

270

19

3 440

260

19

2 43C

40

6 <2

4,600

15

<4

<2

1,400

16

<4

<2

1,400

near Livengood, Al

aska

location-2 (L

V-2

) .--Continued

23

<4

<2

1,000

58

12

<2

420

68

13

<2

430

(47

4 <2

1,300

47

5 <?

1,300

19

<4

<2

6,200

95

8 <2

1,100

96

9 <2

1,100

i

bo

C

6.--


r so

il samples collected near Flat,

Iditarod,and Livengood, Alaska.

[N,

not

detected; <,

detected but

below the

limit of determination sh

own;

>, determined to

be

creater than th

e value sh

own,

Sample

FT101

FT1C2

FT2M

FT2C1

FT232G

FT2IIC3

FT2IIC4

ID3D

2

ID333

LV131

LV1C2

LV1C3

LV1IIC4

As ppm-h

ppm-s

Al

%-s

Au pp

m A.

u ppb-w

Au ppm-p

Ba ppm-E

Re ppm-s

Total

Soil


ar Fl

at,

Alaska location-1 (F

T-1)

.

21

.0U

1.0

12

0.0

190.0

42

.06

3.

C7

0.

r3B

O.O

640.0

8.2

14

.013.:

22

. &

3 '4

D .

37

50

.0R

10.0

3,4

00

.06

,10

0.0

330.0

43

0.0

210.0

1 ,1

00

.0850.

C6

00

.0

20

40

90

16

0

So 40 50

70

33

0590

Soil

<10

<10

<1

0 20

Soil 33

0620

66

03,2

00

6,0

00

Soil 320

mo

560

1 ,0

00

72n

530

2.5

4.7

7.3

7.8

<.05

<.05 .05

.10

1 7 321

.02

.02

<.f>

2 .10

320

540

860

1,10

0

Soil


Alas

ka location-2 (F

T-2)

.

5.8

6.6

7.1

7.6

8.9

<.05

<.05

<.05

.88

Soil samples collected near Iditarod, Al

aska

location-3 (I

D-?)

2.1

6.6

6.8

6.U

<.05

<.05

<.05

<.05

<.02

3PO

850

880

P70

oil


ar Livenaood, Alaska location-1 (LV-1).

7.0

7.0

8.7

Soil samples collected near Livengood, Alaska location-2 (LV-2).

.05

.07

. 0°

.24

.37

f 3 2 215

.02

.04

.06

.05

.02

1,000

1,000

1 ,200

1,700

1,900

2 2 3 5 6

35. 10

2D.60

1.69 .44

35.00

4.33

5.07

1.03

18.30

1.65

1 . 1C

Organic

r

530 4!)

24

<1 <11

29

750

<.02

.02

.02

. 16

.78

650

720

790

1,400

1,400

1 1 1 3 4

8.51

3.11

3.28

.21

.05

70 30 30 30 22

440

100

120 60

465

70

60

40

4?

LV2D2

LV2~1

LV2A1B

LV2:2

LV2C3

LV2"4

330.0

430.0

210.0

1 ,100.0

850. C

600.0

320

410

560

1 ,000

720

530

3.7

5.7

5.5

7.0

6.6

6.1

.06

.56

.45

.5"

. 1R

.13

414 14 18 148

. ^5

.06

.04

.05

.07

.04

58">

790

790

1 ,000

960

980

<11 1 2 2 1

22.^0

9.11

11.80

2.29

1.74

2.09

45C

260

200 70 50 6C

Sample collected from the

'pay

zo

ne'

of a

placer mi

ne near Livengood, Alaska location-^ (L

V-4)

.

LVU

2,100.0

2,100

7.3

1.20

200

.02

2,200

.1+7

35

r n

Table 6. Analytical results for soil samples collected near Flat, Iditarod,and Livenoood, Alaska.--Continued

Sanple

FT101

FT1D2

FT1C1

FT1C2

FT2A1

FT2C1

FT2C2G

FT2IIC3

FT2IIC4

ID302

ID3C1

ID 3 Z 2

ID3C3

LV102

LV1C1

LV1C2

LV1C3

LV1IIC4

LV202

LV2C1

LV2A1B

LY2C2

LY7C3

LV2C4

Ca ppm-w

Ca

%-s

Cd ppm-r

Ce ppm-s

Cl ppm-w

Co ppm-?

Cr ppm-s

Cu ppm-s

Fe

7,-s

Soil samples collected near Flat, Rlaska location-1 (FT-1). Continued

12 32 2 2

.U2

.59

.77

.70

<2

<2 <2 <2

22

4076

6.00

3.80

1.50

81

12.00

Soil samples collected near Flat,

4 2 2 2 U

77 29 27 10 P5 137 7 8

67

61 48 17 15 15

.81

.75

.78

2.30

.87

Soil sairples

1.00

.R7

.8U

.73

Soil samples

.85

.90

.85

.56

.19

Soil samples

1.00

1.10

1.10

.55

.66

.65

<2

<2

<2 <2

<2

collected

<2 <2

<2 <2

collected

<2 <2<2 U a

collected

<2 <2

<2<2 <2

<2

(49

59

6U69

7«4

near Iditarod

?* 59 61 66

near Livenqood

. 65

75 Q5

150 75

near

Livengood

?3 46

U8 68 7257

(4 615 21

31 50

120

140

Alaska location-2 (FT-2).-

1.0C

.73

.85

.30

.51

, Alaska

6.00

6 .50

.51

.5R

, Alaska

6 .2

01.1?

1 .30

1.20

.55

, Al

aska

u.uo

5. 40

5.20

1.50

2.80

2. 50

510 1

159

21

location-3

16 15 13 23

location-1

10 11 12 10 2a

location-2

20 25 28 37 3R 37

63

100

11C

5SD

1PO

(ID-3)

32120

130

mo

(LV-1)

89110

12C

1DC

35"

(LV-2)

200

260

300

U30

(440

460

1 1

15

31 (41

-Continued

12 21 24

110

190

.--Continued

1C 16 2029

.--Continued

42

22 28

37140

. --Continued

23 29 36 36 30

31

1 .1

2.5

4.1

4.4

2.0

4.C

4 .6

6.5

3.P

1 .4

3. f

t3.8

4.2

2.2

3.R

3.8

4.8

6.r

2.4

3.5

3.8

4.9

4.5

4.5

11

16

1R 15 16 17 15 15 17 1°

2C 9

13 13 17 17 15

Sample collected from the

'p^y

zo

ne'

of

a placer mine ne

?r Livehgood, Alaska location-U (LV-U) .--Cont.inuf-rl

LVU

UU

.51

2 11

0 .U

9 21

200

57

5.0

18

' ro o iU.

;

} : « * f V-

'

feJr'

'

feft

v^ '

S" /

:'

ffri

fA-.

4^.%

;;,

|i:;.J

t£V

Table 6.-

Sa.ple

FT101

FT1?2

FT1C1

FT1C2

FT2A1

FT2C1

FT232G

FT2IIC3

FT2IIC4

- Analytical results £or

Hg ppm

.21

.17

.10

.14

.'45

.18

.11

.08

.16

-c

K %-s

La

Soil samples

.57

1 .0

01.60

1.70

Soil samples

1 .4

01 .40

1 .50

1.60

3.50

soil

ppro

-s

samples

Li ppm

collected near

10 19

35 37

918 34 38

collected near

23 rp 30 35 36

23 3C 31 35 25

collected near

-s

Mg

%-s

Flat, Mask a

.25

.48

.98

1.00

Flat, Alaska

.54

.87

.92

5.30

2.50

Flat, Iditaro3,and Livengood, Alaska.

1g pp

m-w

location- 1

517

1 1

locn

t io

n -2

2 1 1 1 2

Soil samples collected near Iditarod, Alaska location

IF3D2

IP3C1

IL>3C2

ID3C3

i

. 10

. 10

.10

.06

.45

1.30

1.40

1 .4

0

10 27 ?B 31

Soil samples collected

LV1D2

LV1C

1LV1C2

LV1C3

LV1IIC4

. 15

.04

.12

.14

.54

1.20

1.60

1 .80

2.00

2.50

30 37 45 68 32

Soil samples collected

LV2

r>2

LV2C1

LV2A1P

LV2C2

f

LV2C3

LV2C4

Sample

LV4

f r ,-

.31

.38

.42

.38

.46

.44

.95

1.30

1 .4

02.10

1.PO

1.60

collected fr

om th

e 'p

ay

1.20

2.90

15 22 23 30 31 27

zone

1

53

11 35 36 35

.33

.85

.85

.92

208 8 3

fln

ppm-

(FT-1)

2.4

4.0 .2 . 1

(FT-2)

. 1

. 1

<. 1 . 2

. 4

-3 (i

n-

7 .? .5 .8 .3

near Livengood, Alaska location-1 (LV-

19 36 36 4010

0

.60

.91

.91

.81

.73

425 2 3 3

19.0 .5 .2 .1 .1

near Livengood, Al

aska

location-2 (L

V-

19 31 32 43 38 35

1.80

2. 10

2.00

2.10

2.50

3.20

of a

placer mine near

37.7

0

148

111 93 33 31 31

Livengood ,

17

4.9

1.7 .8 .2 .2 .2

Alaska

. 1

w rtn ppm-s

fo

.--Continued

340

310

410

680

. --Cont inued

480

310

320

1,410

740

3 ) .--Continued

840

510

580

6CO

1 ) .--Continued

98C

380

4 1C

330

270

2). --Continued

870

930

1,200

1,700

1,600

1,000

location-4 (L

V

500

rp.-

C

<? <2 <2 <2 <2 <2 <2 <2 O <2 <? <2 <2 <2

<2 <27 7

<2 <2

<2 <2

<2 <2

-4).--

4

TontinuM

N a

p F m - w

13 24C,

1f 1 1 r. 6 6 7

1 1 9 P 4

1?C} $

10 7 e149 7 7 q

Continued

c,

K>

c

Table 6. Analytical results for soil samples collected near Flat, Iditarod,and Livengood, Alacka.--Continu

Sample

FT101

FT1D2

FT1C1

FT132

FT2M

FT2C1

FT2C2G

FT2IIC3

FT2IIC4

ID302

ID3C1

ID3C2

ID3C3

LV1D2

LV1C1

LV1T2

LV133

LV1IICU

Na

%-s

Nb ppm-s

Nd ppm-s

Ni ppm-s

P %-

s Pb ppm-s

Ph

Total S%

Sb ppb-h

Sc ppm-

Soil samples collected near Flat, Alaska location-1 (FT-1).--Continued

5 815 17 12 13 22

V4

513 14

912 128

22

LV2C1

LV2A1B

LV2C2

LV2C3

LV234

.47

.92

1.20

1.10

<4 <44 5

10 18 33 36

1 1

19 43 55

Soil samples collected near Flat,

1.60

1.10

1.10

1.20

2.70

.30

1.10

1.10

1.00 .73

1.10

1.10

1.20 .08

.59

.97

.7U

.58

.89

.89

5<U6 8

13

Soil

samples

<45 5 6

Soil

samples

7 7 7266

Soil samples

<46

<U5

<44

23 76 27 36 13

collected

12 ?( ?6 30

collected

20 33 38 fiO

36

collected

15

18 23 27 32 28

19 33 3U300

110

near

Iditsror

1

16 "8 51 64

near Livengood

C8

37 UO 46

290

near Livengood

180

210

2UO

260

29. -

>330

.12

. 12

.07

.08

5 12 17 15

Maska location-2

.06

.08

.09

. 14

. 18

, Alaska

. 10

.06

.07

.05

, Alaska

.12

.04

.04

.06

.09

, Alaska

.09

.08

. 10

.08

.07

.05

10 11 14 15

22

location

1* 10 12 1.3

3.52

3.95

4.43

4.87

(PT-2)

4.38

4.56

4.56

4.47

4.76

-3 (ID-

4.36

4.99

4.97

4.93

location-1 (LV-

15 15 22 '22 .8

location

812 12 13 11 11

4.24

4.49

4.73

4.89

5.30

-2 (LV-

4.62

5.26

5.35

6.14

6.20

5.92

.OP

39.0

».06

3.3

.01

9.5

<.01

15.0

. --Cont inued

.01

1.9

.01

2.4

.01

3.1

<.01

?3.0

<.01

55.

C

3) .--Continued

.12

2C.C

.02

4.3

.02

4.4

<.01

18.0

1 ) .--Continued

.05

1 2 C .

0.0

2 11.0

.03

13.0

.13

1 2 0

. 0.0

2 280.0

2). --Continued

.08

73.:

.04

100.0

.06

11L.C

.02

250. C

.01

210.:

<.01

140.0

15 15 14

Sample collected from the 'pay zone' of a

placer mine near Livtengood, Alaska location-4

( LV-4 ).--Con tin

u^ri

LVU

.78

7 45

13

0 .1

0 37

6.76

.02

220.0

15

Table 6.

-- Analytical results for

soil


Iditarod,and Livengood, Alaska.--Continn?J

SD4

Sp.Cond

Sr pp

ir-s

Th

ppm-s

Ti

ppm-

w mmhos/cm

ppm-s

Y ppm-s

Yb ppm-s

Zn ppm-s

Soil samples collected near Flat, Alaska location-1 (FT-1). Continued

Sa-nple

FT101

FT102

FT1C1

FT1"2

FT2A1

FT2C1

FT2C2G

FT2IIC3

FT2IIC4

ID302

ID3C1

IP3C2

ID3C3

LV102

LV1C1

LV1C2

LV1C3

LV1IIC4

LV202

LV2A1B

LV2C2

LV2C3

Sample collected fr

om the

'pay

zo

ne'

of

a placer mine near Livpngood, Alaska location-4 (LV-U).--Continued

LV4

8.8

58

290

16

.34

210

21

2 330

15.0

10.0

2.4

3.6

189

172 29 22

54

91130

130

<4 5 9 9

.16

.30

.43

.44

39

70

150

150

Soil samples collected near Flat, Alaska location-2

3.0

1.1

1.3

2.2

3.3

12.0

2.4

2.5

1.9

11.0

3.1

6.0

2.6

2.9

8.3

7.2

6.9

3.8

3.2

3.7

40

32 25

27

24

Soil

samples

167 53 55 36

Soil samples

170 32

34

25 34

Soil samples

212

150

128

52 52

53

120

120

130

260

250

collected

98

130

130

120

collected

150

170

170

210

130

collected

130

160

150

150

160

140

6108 8

25

near

<4 7 7 7

near 8 9 10 23 10

near <4<4 7 8108

.36

.40

.43

.47

.34

Iditarcd,

.13

.44

.44

.43

Livenoood ,

.30

.39

.36

.33

.30

Livengood ,

.19

.31

.27

.31

.31

.30

71120

130

160

100

511 18 23

* <1

1 2 2

4647

81 92

(FT-2) .--Continued

19 11 13 24 22

Alaska location-3

36 130

130

130

Alaska location

100

130

130

1 10

340

Alas

ka location

85

130

130

180

160

160

R

15 17 18

-1 16 18 21 34 23

-2

g

15 16 12 14 15

2 1 1 2 2

(ID-3). --Continued

<12 2 2

(LV-1). --Continued

2 2 2 4 3

(LV-2). --Continued

1 2 2 1 2 2

527069

120 63 31 7479

61

100 P 2

87

1 DO

50C 73

1 CC

120

1 ^G

130

120

r

united states department of interior geological …

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