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Cryolite & Siderite

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GMN980492

Cryolite & Siderite

Type Locality

Description Tabs

Description
Locality: 
Ivigtut, Ivittuut, Arsuk Fjord, Sermersooq, Greenland
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 6.5 × 4 cm
Description

Classic white cryolite veinlet in brown siderite 

Mineral Data
What's on the rock

Cryolite

Formula: 
Na3[AlF6]
Strunz: 
3.CB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

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