| Mineral | ENSTATITE |
| Chemistry | Mg 2 Si 2 O 6 |
| Color | white Yellowish Green brown Greenish white or gray. |
| Luster | VitreousPearly |
| CrystalSystem | Orthorhombic |
| CrystalHabits | include rare individual crystals that have a stubby prismatic habit.More typically massive or in coarse lamellar or fibrous aggregates. |
| Fracture | perfect in two directions at nearly 90 degrees. |
| Hardness | 5½ |
| Streak | Gray |
| Occurences | include the Tilly Foster Mine, Brewster, New York; Boulder, Colorado; Jackson Co., North Carolina; Lancaster Co., Pennsylvania and Bare Hills, Maryland, USA as well as many localities from around the world especially in India, Burma and Tanzania. |
| Indicators | color, crystal habit, hardness, cleavage, index of refraction and luster. |
| DensityNote | slightly above average for translucent minerals |
| IMAStatus | Approved |
| CellParameters | a = 18.22b = 8.81c = 5.17 |
| Ratio | a:b:c = 2.068 : 1 : 0.587 |
| OpticalType | Biaxial (+) |
| RI | n α =1.650 - 1.668 n β =1.652 - 1.673 n |
| Birefringence | δ=0.009 - 0.011 |
| SurfaceRelief | Moderate |
| Strunz | 8/F.02-10 8 : Silicates F : Inosilicates (chain and band) double chains [Si2O6]4- 02 : Pyroxene groupOrthopyroxene |
