|Mineral class||Silicates : Inosilicates : Diopside - Augite group.|
|Habitus||Often as well formed crystals with squarish or octaedric cross section, often twinned. Other habits are grainy, columnar, massive and lamellar aggregates.|
|Cleavage||Good, with two cleavage planes in 87 degrees angle. Fracture uneven.|
|Color||Colorless, white, gray, green, greenish black, yellowish brown, reddish brown. Transparent to nearly opaque.|
|Streak||White to gray.|
|Occurance||Often in contact metamorphic limestones and dolomites. In many metamorphic rocks and in basic igneous rocks.|
|Associates||Garnet, Wollastonite, Forsterite.|
|Notes||Insoluble in acids.|
|Locations|| A common mineral in Sweden.
Good crystal localities are old limestone and marble quarries.
Also in scarn in many iron mines.|
| To silicate index.
|| Mineral group index.
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