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Polycrase-(Y)

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SCH64778

Polycrase-(Y)

Description Tabs

Description
Locality: 
Flekkefjord, Agder, Norway
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.2 × 0.2 cm
Description

Six vitreous loose grains of blackish polycrase-Y showing some crystal faces but mostly conchoidal fractures. The size given is for the largest one.

Mineral Data
What's on the rock

Polycrase-(Y)

Formula: 
(Y,U)(Ti,Nb)2O6
Strunz: 
4.DG.05
Hardness: 
5.0 - 6.0
Colour: 
Black
Type Locality: 
Rasvåg feldspar quarries, Hidra (Hitterø), Flekkefjord, Vest-Agder, Norway
schani

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