
1) Manganese mineral 2) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/arsenoclasite

Arsenoclasite (originally arsenoklasite) is a red or dark orange brown mineral with formula Mn5(AsO4)2(OH)4. The name comes from the Greek words αρσενικόν (for arsenic) and κλάσις (for cleavage), as arsenoclasite contains arsenic and has perfect cleavage. The mineral was discovered in 1931 in Långban, Sweden. Arsenoclasite is red o...
Found on
http://en.wikipedia.org/wiki/Arsenoclasite
No exact match found.