1) Arsenic mineral 2) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/pararealgar
Pararealgar is an arsenic sulfide mineral with the chemical formula As4S4 also represented as AsS. It forms gradually from realgar under exposure to light. Its name derives from the fact that its elemental composition is identical to realgar, As4S4. It is soft with a Mohs hardness of 1 - 1.5, is yellow orange in colour, and its monoclinic prismati...
Found on
http://en.wikipedia.org/wiki/Pararealgar
No exact match found.
