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Tombarthite-(Y)

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SKY1019572

Tombarthite-(Y)

Type Locality

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Description
Locality: 
Høgetveit Feldspar Quarry, Evje og Hornnes, Agder, Norway
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 0.5 cm
Description

Black crystal aggregates of the rare yttrium mineral tombarthite-(Y) from the first recorded locality in  Norway.

Tombarthite-(Y) is considered as a mixture of metamict and crystalline phases, among them thalénite-(Y), xenotime-(Y) and kainosite-(Y).

Ex Vandenbroucke Museum collection from Waregem, Belgium.

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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Start 24 May 18:00
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