CHEMISTRY - Ca2Al3 (SiO4) (Si2O7) O (OH)
CRYSTALLOGRAPHY - Monoclinic
CRYSTAL GROWTH AND HABITS - Crystals of Clinozoisite are typically prismatic and elongate with striations parallel to their long axis [010]. It can also be fibrous to granular.
COLOR AND OTHER OPTICAL PROPERTIES - Pale yellow to greenish but also colorless, pink, reddish and gray. It is transparent to translucent.
HARDNESS - 6.5
SPECIFIC GRAVITY - 3.21 - 3.38
LUSTER - Vitreous
STREAK - White
BREAKABILITY - Clinozoisite has nearly perfect cleavage along {001} with an uneven fracture. It is brittle.
OCCURRENCE - Clinozoisite is found in low to medium grade regional metamorphic terrains. It is also produced as a product of contact metamorphism of calcium rich sediments and it is an alteration product of plagioclase feldspars.
ASSOCIATED MINERALS - Most commonly Clinozoisite is found with Quartz, Plagioclase and Amphiboles.
NAME - It is a name derived from its crystallography (clino for monoclinic) and its chemical relation to Zoisite.