Melanophlogite (MEP) is a rare silicate mineral and a polymorph of silica (SiO2). It has a zeolite-like porous structure which results in relatively low and not well-defined values of its density and refractive index. Melanophlogite often overgrows crystals of sulfur or calcite and typically contains a few percent of organic and sulfur compounds. ...
Found on
http://en.wikipedia.org/wiki/Melanophlogite
(from the article `silica mineral`) Melanophlogite is a tetragonal or cubic silica mineral with a gas-hydrate structure containing many large voids. In nature these are filled with 6 to ...
Found on
http://www.britannica.com/eb/a-z/m/66
No exact match found.
