Tyrolite

Tyrolite

Tyrolite is a hydrated calcium copper arsenate carbonate mineral with formula: CaCu5(AsO4)2CO3(OH)4·6H2O. Tyrolite forms glassy blue to green orthorhombic radial crystals and botryoidal masses. It has a Mohs hardness of 1.5 to 2 and a specific gravity of 3.1 to 3.2. It is translucent with refractive indices of nα=1.694 nβ=1.726 and nγ=1.730.

It is a secondary mineral formed by the weathering of associated copper and arsenic minerals. It was first described in 1845 for an occurrence near Innsbruck, Tyrol, Austria.

References

* [http://webmineral.com/data/Tyrolite.shtml Webmineral]
* [http://www.mindat.org/show.php?id=4070&ld=1&pho= Mindat with location data]


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  • Tyrolite — Tyr o*lite, n. [From Tyrol, where it occurs.] (Min.) A translucent mineral of a green color and pearly or vitreous luster. It is a hydrous arseniate of copper. [1913 Webster] …   The Collaborative International Dictionary of English

  • tyrolite — ˈtirəˌlīt noun ( s) Etymology: German tirolit, from Tirol, Austria + German it ite : a mineral Cu5Ca(AsO4)2(CO3)(OH)4.6H2O(?) that is a hydrous hydroxide, arsenate, and carbonate of copper and calcium * * * tyrolite Min. ( …   Useful english dictionary

  • tyrolite — noun A hydrated calcium copper arsenate carbonate mineral that forms glassy blue to green orthorhombic radial crystals and botryoidal masses …   Wiktionary

  • tyrolite — tyr·o·lite …   English syllables

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