
1) Magnesium mineral 2) Monoclinic mineral 3) Potassium mineral
Found on
https://www.crosswordclues.com/clue/celadonite

Celadonite is a mica group mineral, a phyllosilicate of potassium, iron in both oxidation states, aluminium and hydroxide with formula: K(Mg,Fe2+)(Fe3+,Al)[Si4O10](OH)2. It crystallizes in the monoclinic system and usually forms massive aggregates of prismatic crystallites or in dull clay masses. It is soft with a Mohs hardness of 2 and a specific...
Found on
http://en.wikipedia.org/wiki/Celadonite

(from the article `clay mineral`) Celadonite and glauconite are ferric iron-rich species of dioctahedral micas. The ideal composition of celadonite may be expressed by K(Mg, Fe3+)(Si4 ...
Found on
http://www.britannica.com/eb/a-z/c/41
No exact match found.