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Tilasite & Chalcopyrite

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SER769397

Tilasite & Chalcopyrite

ex Domenico Forloni collection

Description Tabs

Description
Locality: 
Monte Cervandone Area, Devero Alp, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.2 × 1.5 cm
Description

some dark pink tilasite crystals on gneiss with tiny chalcopyrite crystals; it comes with an old label

Mineral Data
What's on the rock

Tilasite

Formula: 
CaMg(AsO4)F
Strunz: 
8.BH.10
Hardness: 
5.0
Type Locality: 
Långban, Filipstad, Värmland, Sweden

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0