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Axinite-(Fe) Tremolite & Quartz

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PDM830707

Axinite-(Fe) Tremolite & Quartz

Description Tabs

Description
Locality: 
Colebrook Hill Mine, Rosebery district, West Coast Municipality, Tasmania, Australia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.9 × 5.1 × 4.3 cm
Description

Sharp purplish axinite-(Fe) with good lustre and transparency on a crystallized matrix of quartz. It is associated to green hairy crystals of tremolite. Typical material, etched out of calcite, from this Tasmanian skarn.

Ex Roger Gnat, with label.

Mineral Data
What's on the rock

Axinite-(Fe)

Formula: 
Ca2Fe2+Al2BSi4O15OH
Strunz: 
9.BD.20
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
St Christophe-en-Oisans, Bourg d'Oisans, Isère, Rhône-Alpes, France...

Tremolite

Formula: 
☐{Ca2}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0
Streak: 
White
Type Locality: 
Campolungo, Piumogna Valley, Leventina, Ticino (Tessin), Switzerland

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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