出典:Wiktionary
Tyrol (“place name in Austria, where it was discovered”) + -ite
tyrolite (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:19 UTC 版)
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.