Glaucodot

Glaucodot

Glaucodot is a cobalt iron arsenic sulfide mineral with formula: (Co,Fe)AsS. The cobalt:iron(II) ratio is typically 3:1 with minor nickel substituting. It forms a series with arsenopyrite (FeAsS). It is an opaque grey to tin-white typically found as massive forms without external crystal form. It crystallizes in the orthorhombic system. The locality at Vastmanland, Sweden has rare twinned dipyramidal crystals. It is brittle with a Mohs hardness of 5 and a specific gravity of 5.95. It occurs in high temperature hydrothermal deposits with pyrrhotite and chalcopyrite. Glaucodot is classed as a sulfide in the arsenopyrite löllingite group.

Glaucodot was first described in 1849 in Huasco, Valparaíso Province, Chile.

References

* [http://webmineral.com/data/Glaucodot.shtml Webmineral]
* [http://www.mindat.org/min-1709.html Mindat with location data]
* [http://www.geology.neab.net/minerals/glaucodo.htm Scandinavian mineral gallery]
* Hurlbut, Cornelius S.; Klein, Cornelis, 1985, "Manual of Mineralogy", 20th ed., p. 288, ISBN 0-471-80580-7


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Look at other dictionaries:

  • Glaucodot — Glau co*dot, n. [Gr. glayko s silvery, gray + dido nai to give.] (Min.) A metallic mineral having a grayish tin white color, and containing cobalt and iron, with sulphur and arsenic. [1913 Webster] …   The Collaborative International Dictionary of English

  • glaucodot — /glaw keuh dot /, n. a mineral, iron and cobalt sulfarsenide, (Co,Fe)AsS, occurring in grayish white crystals. [1840 50; < G Glaukodot, equiv. to glauko GLAUCO + dot < Gk dotér giver] * * * …   Universalium

  • glaucodot — noun A cobalt iron arsenic sulfide mineral …   Wiktionary

  • glaucodot — glau·co·dot …   English syllables

  • glaucodot — …   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

  • arsenopyrite — /ahr seuh noh puy ruyt, ahr sen euh /, n. a common mineral, iron arsenic sulfide, FeAsS, occurring in silver white to steel gray crystals or masses: an ore of arsenic. Also called mispickel. [1880 85; ARSENO + PYRITE] * * * ▪ mineral also called… …   Universalium

  • Глаукодот — Формула (Co, Fe) AsS Сингония ромбическая Цвет Оловянно серо …   Википедия

  • Cobalt — This article is about the metal. For other uses, see Cobalt (disambiguation). iron ← cobalt → nickel ↑ Co ↓ Rh …   Wikipedia

  • List of minerals — This is a List of minerals for which there are Wikipedia articles. Mineral variety names and mineraloids are to be listed after the valid minerals for each letter.For a complete listing (about 4,000) of all mineral names: List of minerals… …   Wikipedia

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