Goslarite

Goslarite

Goslarite is a hydrous zinc sulfate mineral with formula: ZnSO4·7H2O. It is a secondary mineral which develops after primary zinc minerals within the zone of oxidation and in old sphalerite mine workings. It is unstable at the surface and dehydrates readily. It is transparent to translucent and variable in color, ranging from colorless, green, blue to brown. It crystallizes in the orthorhombic system and forms acicular crystals, stalactitic forms and massive clumps. It has a Mohs hardness of 2 - 2.5 and a low specific gravity of only 2. Related minerals include epsomite (MgSO4·7H2O) and morenosite (NiSO4·7H2O).

Goslarite was first described in 1847 for an occurrence in Rammelsberg mines near Goslar, Harz Mountains, Germany.

References

* [http://www.mindat.org/min-1731.html Mindat]
* [http://webmineral.com/data/Goslarite.shtml Webmineral]


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  • goslarite — gos·lar·ite …   English syllables

  • goslarite — ˈgäsləˌrīt, äzl noun ( s) Etymology: German goslarit, from Goslar, city in the Harz mts., German + German it ite : a mineral ZnSO4.7H2O that consists of white zinc sulfate formed by oxidation of sphalerite and that usually occurs massive …   Useful english dictionary

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