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Spinel On Calcite & Forsterite

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PDM832281

Spinel On Calcite & Forsterite

Description Tabs

Description
Locality: 
Parker Mine, Notre-Dame-du-Laus, Laurentides, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 4.1 × 3.9 cm
Largest Crystal: 
1.30cm
Description

Black octahedral crystals of spinel of intense vitreous lustre, implanted in a matrix of cream coloured calcite and grey forsterite. Mounted on an acrylic socle.

Acquired in 1999.

Mineral Data
What's on the rock

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Forsterite

Formula: 
Mg2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic
Hardness: 
7.0
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Seller Information

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