| Id | 53 |
| Identification Type | Mineral |
| Name | Orthoclase |
| Distinguishing Features | no-lamellar-twinning
contact-twinning |
| Description | Colorless to pale yellow, nonpleochroic, low birefringence, commonly elongate when euhedral, moderate to high relief, contact twinning is virtually diagnostic (only one twin plane in a single crystal).
See also feldspar. |
| Tags | feldspar silicate |
| External Resources | Orthoclase on MinDat |
| Imposters | |
| Images |
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