Norrishite
KLiMn3+2Si4O12 [CNMNC approved formula]
Named for Keith Norrish of the Division of Soils, Commonwealth Scientific and Industrial Research Organization, Australia.
| IMA status : | Approved Species 1989 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
71.02.02b.11 |
| (71) Phyllosilicate Sheets of Six-Membered Rings | |
| (71.02) with 2:1 Layers | |
| (71.02.02b) Mica Group (Biotite subgroup) | |
| Nickel-Strunz (10th edition) : |
09.EC.20 |
| (09) Silicates | |
| (09.E) Phyllosilicates | |
| (09.EC) Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |