1) Cubic mineral 2) Magnesium mineral
Found on
https://www.crosswordclues.com/clue/ringwoodite
Ringwoodite is a high-pressure polymorph of olivine (a magnesium iron silicate) that is formed at high temperatures and pressures of the Earth`s mantle between 525 and 660 km depth. Ringwoodite is notable for being able to contain hydroxide ions (oxygen and hydrogen atoms bound together) within its structure. Combined with evidence of its occurre....
Found on
http://en.wikipedia.org/wiki/Ringwoodite
(from the article `olivine`) ...been analyzed by means of an electron probe and found to be (Mg0.75Fe0.25)2SiO4; in thin sections it appears blue-gray to violet-blue. It has been ...
Found on
http://www.britannica.com/eb/a-z/r/51
No exact match found.
