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Stromeyerite & Chalcocite

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PDM628140

Stromeyerite & Chalcocite

Description Tabs

Description
Locality: 
Alexander Mine, Vrančice, Příbram, Central Bohemian Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.4 × 2.9 × 1.6 cm
Description

Rich specimen of quartz and microcrystalline stromeyerite matrix with the surface covered by very bright, silver-white chalcocite crystals and elongated stromeyerite crystals of dark blue colour and some iridescence. Specimens of this crystallized silver-copper sulphide are hard to find, especially of this quality and size.

Ex. Johann Muizebelt (NL) specimen.

Mineral Data
What's on the rock

Stromeyerite

Formula: 
AgCuS
Strunz: 
2.BA.40
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
2.5 - 3.0
Type Locality: 
Zmeinogorsk Mine (Zmyeinogorsk Mine; Snake Mountain Mine; Schlangenberg Mine), Zmeevka Stream, Korbalikha River, Alei River Basin, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

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