Potassium Feldspar
| PROPERTIES |
| Properties |
| Orthoclase, an important tectosilicate mineral that forms igneous rock |
| Microcline, chemically the same as orthoclase, but with a different crystalline structure |
| Sanidine, the high temperature form of potassium feldspar (K,Na)(Si,Al)4O8 |
| Adularia, a more ordered low-temperature variety of orthoclase or partially disordered microcline |
| Amazonite |