
1) Magnesium mineral 2) Triclinic mineral
Found on
https://www.crosswordclues.com/clue/meridianiite

Meridianiite — MgSO4•11H2O — is the crystalline 11-hydrate magnesium sulfate phase that precipitates from solutions saturated in Mg2+ and SO42- ions at temperatures less than 2 ˚C. Clear to colorless, it is a naturally occurring mineral species found on Earth in a variety of environments including sea ice, crusts and efflorescence’s in co...
Found on
http://en.wikipedia.org/wiki/Meridianiite
No exact match found.