Gratonite

Gratonite

Gratonite is a lead-arsenic sulfide mineral, with the chemical composition Pb9As4S15. Gratonite was discovered in 1939 at the Excelsior Mine, Cerro de Pasco, Peru. It is named in honor of geologist L. C. Graton (1880-1970), who had a long-standing association with the Cerro de Pasco mines.

References

* [http://rruff.geo.arizona.edu/doclib/hom/gratonite.pdf Mineral Data Publishing]
* [http://webmineral.com/data/Gratonite.shtml Webmineral]
* [http://www.mindat.org/min-1741.html Mindat]


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  • gratonite — grat·on·ite …   English syllables

  • gratonite — ˈgratənˌīt noun ( s) Etymology: Louis C. Graton b1880 American geologist + English ite : a mineral Pb9As4S15 consisting of sulfide of lead and arsenic in rhombohedral crystals …   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

  • L. C. Graton — Louis Caryl Graton (1880 1970), American geologist, chemist and educator, began his career in 1900 as assayer for Ledyard Gold Mines Ltd., near Rockdale, Ontario. He moved on to Canadian Goldfields Ltd. later in 1900, then entered McGill… …   Wikipedia

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