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Axinite-(Fe) Datolite & Byssolite

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CLB208424

Axinite-(Fe) Datolite & Byssolite

Classic Locality

Description Tabs

Description
Locality: 
Colebrook Hill Mine, Rosebery district, West Coast Municipality, Tasmania, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.5 × 2.8 cm
Description

Dark brown, glossy axinite-(fe) crystals, mixed with almost transparent, colorless datolite. In a little vug you can see a little tuft of hairfine byssolite (no detail photo) and minor marcasite balls. Some unavoidable dings.

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...

Datolite

Formula: 
Ca(HBSiO5)
Strunz: 
9.AJ.20
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Nødebro Mine (Nøddebro), Arendal Iron Mines, Arendal, Aust-Agder, Norway

Byssolite

Variety Of: 

Amphibole Supergroup

Formula: 
AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hardness: 
0.0
Hardness: 
0.0

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