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Thortveitite & Fergusonite-(Y)

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HCH90720

Thortveitite & Fergusonite-(Y)

Description Tabs

Description
Locality: 
Tveit #3 Feldspar Quarry, Iveland, Agder, Norway
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.8 cm
Description

Intergrown pitchblack masses of fergusonite Y and greenish aggregates of thortveitite up to 1.5 mm in pegmatite.

Mineral Data
What's on the rock

Thortveitite

Formula: 
(Sc,Y)2Si2O7
Strunz: 
9.BC.05
Crystal System: 
Monoclinic
Hardness: 
6.0 - 7.0
Streak: 
white
Type Locality: 
Ljoslandsknipan (Thortveitittgruva), Knipan (Knipane), Ljosland, Iveland, Aust-Agder, Norway

Fergusonite-(Y)

Formula: 
YNbO4
Strunz: 
7.GA.05
Hardness: 
5.5 - 6.5
Type Locality: 
Kangeq, Sermersoq Island, Kujalleq, Greenland

Seller Information

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