1) Iron mineral 2) Manganese mineral 3) Triclinic mineral
Found on
https://www.crosswordclues.com/clue/chloritoid
Chloritoid is a silicate mineral of metamorphic origin. It is an iron magnesium manganese alumino-silicate hydroxide with formula: (Fe,Mg,Mn)2Al4Si2O10(OH)4. It occurs as greenish grey to black platy micaceous crystals and foliated masses. Its Mohs hardness is 6.5, unusually high for a platy mineral, and it has a specific gravity of 3.52 to 3.57. ...
Found on
http://en.wikipedia.org/wiki/Chloritoid
common silicate mineral, a basic aluminosilicate of manganese, magnesium, and iron. Once thought to be a member of the brittle mica group, ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/c/75
No exact match found.
