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Tilasite & Epidote

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SER514273

Tilasite & Epidote

Rare Mineral

Description Tabs

Description
Locality: 
Devero Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 4.5 × 3.1 cm
Description

The best specimen that I ever saw of this rare mineral : several pink, also double terminated, large,  tilasite crystals with green epidote

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

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...