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Actinolite

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GND95643

Actinolite

Description Tabs

Description
Locality: 
Dinnertime Hill, Arkaroola District, Flinders Ranges, South Australia, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 4.4 × 3 cm
Description

Dark green actinolite crystals up to 15mm long have developed within a vugh in more compact material. This area is famous for it's colourful zeolites and large ilmenite crystals which were formed from volcanic activity some 800 my ago.

Mineral Data
What's on the rock

Actinolite

Formula: 
☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Crystal System: 
Monoclinic - Prismatic
Hardness: 
5.0 - 6.0
Streak: 
White
Gondwana Minerals