1) Ammonium mineral 2) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/bararite
Bararite is a natural form of ammonium fluorosilicate (also known as hexafluorosilicate or fluosilicate). It has chemical formula (NH4)2SiF6 and trigonal crystal structure. This mineral was once classified as part of cryptohalite. Bararite is named after the place where it was first described, Barari, India. It is found at the fumaroles of volcano...
Found on
http://en.wikipedia.org/wiki/Bararite
No exact match found.
