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Smoky Quartz Scheelite & Chalcopyrite

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MGR763925

Smoky Quartz Scheelite & Chalcopyrite

Floater

Description Tabs

Description
Locality: 
Akchatau Mine, Karaganda Oblast, Kazakhstan
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.1 × 4.9 × 2.8 cm
Description

A rare combination from this famous locality. The quartz crystals are very dark - but it is not a common smoky color and also no morion, maybe they are not even smokies and the color is caused by inclusions of an unknown mineral. In fact they are not brownish - more grey, nearly like metal. On it you can see small octahedral crystals - these are tiny scheelite crystals, which are covered with a thin beige layer - most likely micro crystals of mica. Further small crystals of chalkopyrite are present - they are partly on the scheelite octahedrons, partly next to them. The specimen is developed as floater, the backside consist of stepped, sharp and also lustrous faces. No significant damages to report.

Mineral Data
What's on the rock

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

Scheelite

Formula: 
Ca(WO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Bispbergs Klack, Säter, Dalarna, Sweden

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

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10
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Start 08 Feb 18:00
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Shipping Information

Postage Area Price
Austria 5
5
Europe 14
14
North America 16
16
Rest of World 19
19

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