Gmelinite

Gmelinite

Gmelinite is one of the rarer of the zeolite minerals being a hydrated silicate of calcium, aluminium and either sodium or potassium with formula: (Na2,Ca)Al2Si4O12·6H2O.

It forms striking crystals, shallow, six sided double pyramids, it can be colorless, white, pale yellow, greenish, orange, pink, and red. They have been compared to an angular flying saucer.

The mineral is named after the German chemist and mineralogist Christian Gottlob Gmelin (1792-1860).

References

* [http://mineral.galleries.com/minerals/silicate/gmelinit/gmelinit.htm Mineral galleries]
* [http://www.mindat.org/min-1714.html Mindat]


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Look at other dictionaries:

  • Gmelinite — Gmel in*ite, n. [Named after the German chemist Gmelin.] (Min.) A rhombohedral zeolitic mineral, related in form and composition to chabazite. [1913 Webster] …   The Collaborative International Dictionary of English

  • gmelinite —       hydrated sodium aluminosilicate mineral in the zeolite family [(Na2,Ca)Al2Si4O12·6H2O]. Its crystal structure and chemical composition are similar to those of chabazite (q.v.), with which it is commonly found. * * * …   Universalium

  • gmelinite — noun A rare zeolite mineral related to chabazite …   Wiktionary

  • gmelinite — gmelin·ite …   English syllables

  • gmelinite — ˌnīt noun ( s) Etymology: Christian G. Gmelin died 1860 German chemist + English ite : a mineral (Na2,Ca)Al2Si4O12.6H2O consisting of a colorless or light colored zeolite isomorphous with chabazite (hardness 4.5, specific gravity 2 2.2) …   Useful english dictionary

  • List of minerals F-J (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia

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