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Eskolaite Var Merumite

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SHS208784

Eskolaite Var Merumite

Description Tabs

Description
Locality: 
Merume River, Kamakusa, Potaro-Siparuni Region, Guyana
Class: 
Single Crystal
Size Range: 
Micromount (under 1cm)
Size: 
0.4 × 0.3 × 0.3 cm
Description

 Nice piece of merumite

Mineral Data
What's on the rock

Eskolaite

Formula: 
Cr2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
8.0 - 8.5
Colour: 
Black
Streak: 
Green
Type Locality: 
Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region, Finland

Merumite

Mixture Of: 

Bracewellite

Formula: 
CrO(OH)
Strunz: 
4.FD.10
Hardness: 
5.5 - 6.5

Eskolaite

Formula: 
Cr2O3
Strunz: 
4.CB.05
Hardness: 
8.0 - 8.5

Gahnite

Formula: 
ZnAl2O4
Strunz: 
4.BB.05
Hardness: 
7.5 - 8.0

Gold

Formula: 
Au
Strunz: 
1.AA.05
Hardness: 
2.5 - 3.0

Grimaldiite

Formula: 
CrO(OH)
Strunz: 
4.FE.20
Hardness: 
3.5 - 4.5

Guyanaite

Formula: 
CrO(OH)
Strunz: 
4.FD.10
Hardness: 
0.0

Mcconnellite

Formula: 
CuCrO2
Strunz: 
4.AB.15
Hardness: 
5.5

Pyrophyllite

Formula: 
Al2(Si4O10)(OH)2
Strunz: 
9.EC.10
Hardness: 
1.0 - 2.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Type Locality: 
Director Creek, Merume river, Kamakusa, Mazaruni District, Guyana