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Jeremejevite & Foitite

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TPX656963

Jeremejevite & Foitite

Rare Mineral

Description Tabs

Description
Locality: 
Usakos, Karibib, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.9 × 3 × 1.6 cm
Weight: 
15.00gr
Description

Very interesting group of blue jeremejevite crystals on foitite matrix from this classic Namibian site.

Mineral Data
What's on the rock

Jeremejevite

Formula: 
Al6(BO3)5(F,OH)3
Strunz: 
6.AB.15
Crystal System: 
Hexagonal
Hardness: 
7.0
Type Locality: 
Soktuj Gora (Mount Soktuj), Adun-Cholon Range, Nerchinsk Gem mines, Nerchinsk (Nertschinsk), Chitinskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia...

Foitite

Formula: 
(□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Strunz: 
9.CK.05
Crystal System: 
Trigonal
Hardness: 
7.0
Type Locality: 
California, USA

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