1) Carbonate mineral 2) Chromium mineral 3) Orthorhombic mineral 4) Strontium mineral
Found on
https://www.crosswordclues.com/clue/putnisite
Putnisite has unique chemical and structural properties, and does not appear to be related to any of the existing mineralogical families. Crystals are translucent purple, but show distinct pleochroism (from pale purple to pale bluish grey, depending on the angle of observation) and leave pink streaks when rubbed on a flat surface. Putnisite occurs...
Found on
http://en.wikipedia.org/wiki/Putnisite
No exact match found.
