Tyrolite

Tyrolite is a hydrous calcium copper arsenate carbonate mineral with the 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 1.5–2.0 and a specific gravity of 3.1–3.2.

It is translucent with refractive indices of nα = 1.694, nβ = 1.726, and nγ = 1.730.

This article about a specific carbonate mineral is a stub.

Chrysocolla on tyrolite and clinotyrolite specimen (4.0 cm × 2.6 cm × 2.6 cm (1.6 in × 1.0 in × 1.0 in)); from San Simon Mine in Santa Rosa-Huantajaya District, Iquique Province , Chile.
(Click image for details of the mineral chemistry.)