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Scheelite & Cassiterite

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MGR801636

Scheelite & Cassiterite

Classic Locality

Description Tabs

Description
Locality: 
Tenkergin Mine, Iul'tinskiy District, Chukotka, Russian Federation
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.8 × 3.8 cm
Description

Scheelite from this deposit is fairly rare. However, scheelite on euhedral crystals of cassiterite making for a competition-quality miniature is rather more unusual, I'd say! The crystal is complate all around, faces are very glossy and with attractive texture. Please note that there is NO damage at the top - this is more likely a disturbance of growth. The cassiterite is also lustrous and sharp and gives great contrast to the piece.

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

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0