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Kornerupine Var Prismatine

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LBB140985

Kornerupine Var Prismatine

Rare Mineral

Description Tabs

Description
Locality: 
Stakholmen Quarry, Hassela, Nordanstig, Gävleborg County, Sweden
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 5 × 4 cm
Description

Gray, thick prismatic prismantine crystals to 4,8 cm embedded in talc and phlogopite matrix from Sweden - 110 gr

Mineral Data
What's on the rock

Kornerupine

Formula: 
Mg3Al6(Si,Al,B)5O21(OH)
Strunz: 
9.BJ.50
Hardness: 
7.0
Type Locality: 
Fiskenæsset old harbour, Fiskenæsset (Fiskenaesset; Qeqertarsuatsiaat), Nuuk (Godthåb), Sermersooq, Greenland

Prismatine

Formula: 
([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Strunz: 
9.BJ.50
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7.0
Type Locality: 
Granulite outcrop, Waldheim, Döbeln, Saxony, Germany
Lennart Borg

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