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Acuminite

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JYJ769054

Acuminite

Description Tabs

Description
Locality: 
Ivigtut, Ivittuut, Arsuk Fjord, Sermersooq, Greenland
Class: 
Massive/Crystalline
Size Range: 
Micromount (under 1cm)
Size: 
0.1 × 0.1 × 0.1 cm
Description

Colourless acuminite in capsula from Ivigtut, Greenland. 

Type locality. Ex M. Batoni specimen. 

 

Mineral Data
What's on the rock

Acuminite

Formula: 
Sr[AlF4(OH)(H2O)]
Strunz: 
3.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5
Streak: 
white
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland