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Polycrase Scheelite & Aeschynite-(Y)

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SER125651

Polycrase Scheelite & Aeschynite-(Y)

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2.4 × 1.8 cm
Description

a light brown polycrase crystal with two tiny, light cognac scheelite crystals and a large aeschynite-y crystal with minor thortveitite

Mineral Data
What's on the rock

Scheelite

Formula: 
Ca(WO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Bispbergs Klack, Säter, Dalarna, Sweden

Aeschynite-(Y)

Formula: 
(Y,Ca,Fe,Th)(Ti,Nb)2(O,OH)6
Strunz: 
4.DF.05
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 6.0
Type Locality: 
Urstad Feldspar Mine, Hidra (Hitterø), Flekkefjord, Vest-Agder, Norway