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3D3DRiebeckite asbestos.

See above Actinolite sample for an extended discussion of asbestos, mesothelioma, lawyers, and litigation.

Mineral details: Riebeckite (variety Crocidolite), amphibole group, double-chain silicate. From the Greek krokid ("nap on woolen cloth"). Kuruman, Northern Cape Province, South Africa.

Source: eBay seller star-stuff
Contributor: Theodore Gray
Acquired: 10 April, 2006
Text Updated: 30 May, 2006
Price: $30
Size: 2"
Composition: Na2Fe2(FeMg)3Si8O22(OH)2