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Polycrase-(Y)

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MNR147455

Polycrase-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Gemerská Poloma, Rožňava County, Košice Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 2 × 1.5 cm
Largest Crystal: 
0.20cm
Description

Black crystals of polycrase- Y in quartz.

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