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Weberite

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GFM617142

Weberite

Rare Mineral

Description Tabs

Description
Locality: 
Eureka Tunnel, St Peters Dome, Cheyenne District, El Paso County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.1 × 5.1 × 2.8 cm
Description

waxy orange crystal aggregates of 1 cm, together with colorless cryolite and brownish microcline. Pretty specimens of this rare Na-Mg-Al-fluoride, from a new find

Mineral Data
What's on the rock

Weberite

Formula: 
Na2Mg[AlF6]F
Strunz: 
3.CB.25
Hardness: 
3.5
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland