  Tremolite asbestos.  
 
See above Actinolite sample for an extended discussion of asbestos, mesothelioma, lawyers, and litigation. 
 
Mineral details: Tremolite, amphibole group, double-chain silicate.  Named after the type locality at Val Tremola (Gotthard Massif, Switzerland).  Sample from Placer County, California, USA. 
 
Source: eBay seller star-stuff 
Contributor: Theodore Gray 
Acquired: 10 April, 2006 
Text Updated: 30 May, 2006 
Price: $30 
Size: 2" 
Composition: Ca2(Mg)5Si8O22(OH)2
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