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Chrysotile & Lizardite

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PDM666177

Chrysotile & Lizardite

Description Tabs

Description
Locality: 
Bou Offroh, Tazenakht, Ouarzazate Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.1 × 9.3 × 3.4 cm
Largest Crystal: 
0.40cm
Description

White fibrous crystals of chrysotile-lizardite with a good satine lustre, filling up parallel fractures of a green serpentinite with the fibres oriented perpendicular to the fracture sides. Self-collected on September 2nd, 2015 at the old mines of the Jbel Bou Offroh.

According to Eyssautier, L. (1952), Notes et Mém. Serv. Géol. Maroc, N°88, this deposit was intensively mined during the Second World War (mainly from 1943 to 1945), and intermitently afterwards untill 1950.

Mineral Data
What's on the rock

Chrysotile

Formula: 
Mg3(Si2O5)(OH)4
Strunz: 
9.ED.15
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.5
Colour: 
Green
Type Locality: 
Zloty Stok (Reichenstein), Ząbkowice District, Lower Silesia (Dolnośląskie), Poland

Lizardite

Formula: 
Mg3(Si2O5)(OH)4
Strunz: 
9.ED.15
Hardness: 
0.0
Type Locality: 
Eastern Cliff, Kennack Cove (Kennack Sands), Kennack, Grade-Ruan, Lizard Peninsula, Cornwall, England, UK

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