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Gatedalite & Tephroite

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POL852531

Gatedalite & Tephroite

Type Locality
Analysed

Description Tabs

Description
Locality: 
Långban, Filipstad, Värmland County, Sweden
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.3 × 1 cm
Description

Nice specimen of extremly rare (single location only!) Gatedalite - a unique Zr species of the Braunite group - and Tephroite in matrx. It occurs around dark grey Tephroite as grains ~60 microns in diameter. Author's material! Analysed!

Mineral Data
What's on the rock

Gatedalite

Formula: 
ZrMn2+2Mn3+4SiO12
Hardness: 
0.0
Type Locality: 
Långban, Filipstad, Värmland, Sweden

Tephroite

Formula: 
Mn2+2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic Forms short prismatic crystals.
Hardness: 
6.0
Streak: 
Pale gray
Type Locality: 
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Seller Information

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