1) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/jimthompsonite
Jimthompsonite is a magnesium iron silicate mineral with formula: (Mg,Fe2+)5Si6O16(OH)2. It is a triple chain silicate (or inosilicate) along with clinojimthompsonite and chesterite. They were described in 1977 by Burham and Veblen. They attracted great mineralogical attention because they were the first examples of new chain silicate structures a...
Found on
http://en.wikipedia.org/wiki/Jimthompsonite
No exact match found.
