1) Carbonate mineral 2) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/nyerereite
Nyerereite is a very rare sodium calcium carbonate mineral with formula Na2Ca(CO3)2. It forms colorless, platey pseudohexagonal orthorhombic crystals that are typically twinned. It has a specific gravity of 2.54 and indices of refraction of nα=1.511, nβ=1.533 and nγ=1.535. Nyerereite is not stable in contact with the atmosphere and rapidly brea...
Found on
http://en.wikipedia.org/wiki/Nyerereite
No exact match found.
