silica sand contamination plates
DESCRIPTION
Mineralogical ReportTRANSCRIPT
Petrolab LimitedPage 10 of 15
Plate 1: Magnetics Fraction - Stereomicroscopy
steel shards and welding splatter.
B Haematite rust and magnetite grains
C Haematite coated steel, magnetite grains and steel shards
D Steel shard and magnetite grains
A, B, C & D - Plane polarised oblique light
A General view showing main iron bearing phases, including haematite rust, magnetite,
Mineralogical Report Client
A
C
B
D500 µm1 mm
500 µm 500 µm
steel shard
haematite
magnetite
haematite coated steel
steel shard
magnetite
haematite (rust)
welding splatter
magnetite
steel shard
haematite (rust)
magnetite
quartz
quartz
Petrolab LimitedPage 11 of 16
Plate 2: Magnetics Fraction - Optical microscopy
B Quartz grain containing a magnetite inclusion.
C Magnetite showing slight haematite alteration, view also contains a fragment of rust containing relict steel.
D Various iron phases, including haematite, steel, magnetite and welding splatter
A & B - Plane polarised transmitted light
C & D - Plane polarised reflected light
A Coarse liberated haematite and iron oxide stained sericitised feldspar
Mineralogical Report Client
A
C
B
D
250 µm
magnetite
haematite
haematite
steel
haematite
steel
welding splatter
steel
haematitemagnetite
haematite
250 µm
250 µm250 µm
magnetite
quartz
haematite
quartz
quartz
quartz
sericitisedfeldspar
sericitisedfeldspar
Petrolab Limited
Plate 3: Magnetics Fraction - SEM Images
the Fe content
B Iron oxide grain with a core of silicon steel.
A General view showing iron bearing phases. The higher intensity of the grain the greater
Mineralogical Report Client
A
B
welding splatter
magnetitesteel
haematite
oxidised steel
rust 2 (silicon steel)
iron oxide rim
quartz
Petrolab LimitedPage 13 of 16
Plate 4: Ships Rust - Stereomicroscopy
A CWA 10 H1 Ships rust sample
B CWA 12 H3 Ships rust sample
C CWA 14 H5 Ships rust sample
A, B & C - Plane polarised oblique light
Mineralogical Report Client
A
C
Bpaint
paint
2.5 mm 2.5 mm
2.5 mm
Petrolab LimitedPage 14 of 15
Plate 5: Ships Rust - Optical Microscopy
A CWA 10 H1 Ships rust sample
B CWA 12 H3 Ships rust sample
C CWA 14 H5 Ships rust sample
A, B, C & D - Plane polarised reflected light
Mineralogical Report Client
A
C
B
500 µm
1 mm
500 µm
paintpaint
Petrolab LimitedPage 15 of 15
Plate 6: Ships Rust - SEM
A CWA 10 H1 Ships rust sample
B CWA 12 H3 Ships rust sample
C CWA 14 H5 Ships rust sample
A, B & C - Plane polarised reflected light
Mineralogical Report Client
A
C
Bpaint
paintpaint