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Tombarthite-(Y)

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SKY780812

Tombarthite-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Åskagen Quarry, Persberg, Filipstad, Värmland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 1.7 cm
Description

Black crystals of the rare yttrium mineral tombarthite-(Y) from Sweden.

Mineral Data
What's on the rock

Tombarthite-(Y)

Formula: 
Y4(Si,H4)4O12-x(OH)4+2x
Strunz: 
9.AD.35
Hardness: 
5.0 - 6.0
Type Locality: 
Høgetveit (Høgtveit), Evje og Hornnes, Aust-Agder, Norway

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