Fassaite is an assortment of Augite with a iron that is low and ended up being originally reported from Fassa Valley, Trento Province, Trentino-Alto Adige, Italy. Fassaite is thought to be described as a contact mineral formed at high temperature on the interface between volcanic rocks and limestone. It really is also reported in meteorites. Fassaite is situated in colors of pale to bright to dark brown and green to greenish brown.

Distribution: into the Monzoni Mts, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy; Pitigliano, Grosseto Province, Tuscany, Italy; Gilgit and Skardu Districts, Baltistan, Gilgit-Baltistan (Northern Areas), Pakistan; Úškrtová Valley, Hodruša – Hámre (Hodritsch), Žarnovica Co., Banská Bystrica Region, Slovakia; Marbella, Málaga, Andalusia, Spain.

Category: Mineral
Chemical Formula: (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6
Calcium Sodium Magnesium Iron Aluminum Titanium Silicate
Color: light-dark green, black
Crystallography: Monoclinic- Prismatic (2/m)
Crystal habit: prismatic, short, plane
Hardness (Mohs): 6.0
Density: 2.9-3.3