Limberg Quarries, Sasbach am Kaiserstuhl, Emmendingen, Freiburg Region, Baden-Württemberg, Germany

(Ca,Mg,Fe)₂(Si,Al)₂O₆

Crystal System: monoclinic
Colour: brown-green, black, green-black, brown or purplish brown
Habitus: prismatic
Hardness: 5½ - 6
Fracture: irregular/uneven or sub-conchoidal
Density: 3.19 - 3.56 g/cm³ 
Origin and geological occurrence: it belongs to the pyroxene group and could be considered as a sub-calcic member of the diopside-hedenbergite series. Augite is found in mafic and ultramafic igneous rocks, in some high-grade metamorphic rocks and in metamorphosed iron formations.

Mindat link
Smorf link

Samples:

	9D.1 Augite  Black prismatic phenocrysts. #inosilicates
	9D.2 Augite  Subhedral black prismatic phenocrysts. #inosilicates