1. 
   erionite
   hydrated sodium-potassium-calcium aluminosilicate mineral in the zeolite family, one of the most abundant zeolites present in sedimentary rocks. Its ... [1 related articles]
   Found op http://www.britannica.com/eb/a-z/e/41
   
   
2. 
   Erionite
   Erionite is a naturally occurring fibrous mineral that belongs to a group of minerals called zeolites. It usually is found in volcanic ash that has been altered by weathering and ground water. Erionite forms brittle, wool-like fibrous masses in the hollows of rock formations and has an internal mol...
   Found op http://en.wikipedia.org/wiki/Erionite
   
   

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