Mineralogical exhibition of Mátra Museum

Minerals of the Parádfürdő mineralization

Minerals of the Parádfürdő mineralization

1.

Tennantite (Cu12[S(As3)4])

Tennantite – Cu12[S(As3)4]

Class: sulfidesCrystal system: cubicCharacteristic crystal form: tetrahedralHardness: 3,5-4,5Cleavage/Fracture: no cleavage/uneven fractureColour: steel-grey, blackStreak colour: reddish greyGlance: metallic lustreLocality: Parádfürdő

2.

Pyrite (FeS2)

Pyrite – FeS2

Class: sulfidesCrystal system: cubicCharacteristic crystal form: hexahedral, octahedralHardness: 6 – 6,5Cleavage/Fracture: poor cleavage/conchoidal, uneven fracture Colour: light copper-yellowStreak colour: greenish black, bownish blackGlance: metallic lustreLocality: Parádfürdő

3.

Quartz (SiO2)

Quartz – SiO2

Class: Oxides and HidroxidesCrystal system: trigonalCharacteristic crystal form: prismatic, rombohedralHardness: 7Cleavage/Fracture: no cleavage/conchoidal fractureColour: colourlessStreak colour: whiteGlance: glassy, silky lustre, unglazedLocality: Parádfürdő

4.

Azurite (Cu3(CO3)2(OH)2)

Azurite – Cu3[OH∙CO3]2

Class: Carbonates, NitratesCrystal system: monoclinicCharacteristic crystal form: tabular, prismaticHardness: 3,5Cleavage/Fracture: excellent cleavage/conchoidal fractureColour: blueStreak colour: blueGlance: glassy lustreLocality: Parádfürdő

5.

Halotrichite (FeAl2(SO4)4∙22H2O)

Halotrichite – FeAl2(SO4)4∙22H2O

Class: SulfatesCrystal system: monoclinicCharacteristic crystal form: fibrousHardness: 1,5Cleavage/Fracture: good cleavage/uneven fractureColour: white, yellowishStreak colour: whiteGlance: glassy lustreLocality: Parádfürdő

6.

Wavellite (Al3(PO4)2(OH)3∙5H2O

Wavellite – Al3(PO4)2(OH)3∙5H2O

Class: PhosphatesCrystal system: rhombicCharacteristic crystal form: prismaticHardness: 3-4Cleavage/Fracture: good cleavage/uneven fractureColour: grey, yellowishStreak colour: colourless, whiteGlance: pearly lustreLocality: Parádfürdő