Formula: {Ca₂}{Al₃}(Si₂O₇)(SiO₄)O(OH)

Species:

Colour: colourless, green, grey, light green, yellow-green, pale brownish, green-brown, pink

Lustre: Vitreous

Hardness: 7

Specific Gravity: 3.3 – 3.4

Crystal System: Monoclinic

Member of: Epidote Group > Epidote Supergroup. The Al3 analogue of Epidote.

Name: Named in 1896 by Ernst Weinschenk in allusion to its its monoCLINic crystal form and the relationship to Zoisite.

Type Locality: Gösleswand (Goslerwand), Prägraten am Großvenediger, Lienz District, Tyrol – Austria

Dimorph of: Zoisite