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Strontianite With Fluorite On Sphalerite

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PDM1002925

Strontianite With Fluorite On Sphalerite

Description Tabs

Description
Locality: 
Minerva #1 Mine, Cave-in-Rock, Hardin County, Illinois, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4.2 × 3.6 cm
Weight: 
75.00gr
Description

Aerial sprays of white lustrous, spiky, needle-like crystals of strontianite associated to some cubic fluorites of purple colour, on a matrix of crystallized dark brown sphalerite. Fine combination piece from the locality.

Acquired in 1977 to Wim Klein by Wilfred Moorer #2505.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Strontianite

Formula: 
SrCO3
Strunz: 
5.AB.15
Crystal System: 
Orthorhombic
Hardness: 
3.5
Streak: 
White
Type Locality: 
Strontian, North West Highlands (Argyllshire), Scotland, UK

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

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