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Calcite On Fluorite With Pyrrhotite

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PMN743238

Calcite On Fluorite With Pyrrhotite

Description Tabs

Description
Locality: 
Bairendaba, Hexigten Banner, Ulanhad League, Inner Mongolia, China (Peoples Republic)
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 6 cm
Largest Crystal: 
1.50cm
Weight: 
217.00gr
Description

This piece is a real adventure, main feature of course are the very lustrous green fluorites, but then you start peeking inside them and find all kinds intersting inclusions. There is rich coverage of small beryl shaped calcite crystals all over, and once you've explored those, you'll notice the pyrrhotite blades and star shaped muscovite as the matrix. One of those specimens were you keep discovering new angles. A no reserve auction item with only damage on the back or bottom where it was removed from the host rock.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0