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Efremovite

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Efremovite

Rare Mineral

Description Tabs

Description
Locality: 
Libušin, Kladno, Central Bohemian Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.2 × 1 cm
Description

beautiful specimen with many fantastic colourles or light broun or yellow cubic crystals of efremovite on matrix ( the crystals of efremovite are extremely rare)

Mineral Data
What's on the rock

Efremovite

Formula: 
(NH4)2Mg2(SO4)3
Strunz: 
7.AC.10
Crystal System: 
Isometric
Hardness: 
2.0
Type Locality: 
Coal mine No. 43, Kopeisk, Chelyabinsk coal basin, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

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