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Chrysocolla & Fluorite

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POL964816

Chrysocolla & Fluorite

Description Tabs

Description
Locality: 
Ilmenau, Ilm-Kreis, Thuringia, Germany
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 5.5 × 5.5 cm
Description

Big specimen of green-blue to sky-blue Chrysocolla with purple Fluorite from Ilmenau area in Germany, probably from Fluorite mine in Gehren.  Ex coll. Henryk Drygalski (1929-2005) - label.

Mineral Data
What's on the rock

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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