| Name: | Potassic-magnesio-fluoro-arfvedsonite Pmfarf |
| IMA Chemistry: | KNa2(Mg4Fe3+)Si8O22F2 |
| Chemistry Elements: | The mineral Potassic-magnesio-fluoro-arfvedsonite contains elements: Potassium (K) Sodium (Na) Magnesium (Mg) Iron (Fe) Silicon (Si) Oxygen (O) Fluorine (F) |
| Country of Type Locality: | Canada |
| Year First Published: | 1985 |
| IMA Status: | Approved,Redefined |
| Status Notes: | Originally named potassium fluor-magnesio-arfvedsonite: Hogarth D D, Chao G Y, Townsend M G (1987) Potassium- and fluorine-rich amphiboles from the Gatineau area, Quebec, The Canadian Mineralogist 25, 739-753 Name changed: Hogarth D D (2006) Fluoro-potassic-magnesio-arfvedsonite, KNa_2_Mg_5_Si_8_O_22_F_2_, from the Outaouais region, Quebec, Canada, The Canadian Mineralogist 44, 289-289 Note that chemical formula is not charge balanced in this report. The formula from the 1987 paper is kept. Name changed from fluoro-potassic-magnesio-arfvedsonite: Hawthorne F C, Oberti R, Harlow G E, Maresch W V, Martin R F, Schumacher J C, Welch M D (2012) Nomenclature of the amphibole supergroup. American Mineralogist 97, 2031-2048 |
| Structural Group Name: | Amphibole |
| Fleischer's Group Name: | amphibole-group 4 Na |
| Crystal Systems: | monoclinic |
| Oldest Known Age: | 1412 Million Years Ago |
| More Info: | Search Wikipedia: Potassic-magnesio-fluoro-arfvedsonite (Wiki) Search Mindat: Potassic-magnesio-fluoro-arfvedsonite Search Web Mineral DB: Potassic-magnesio-fluoro-arfvedsonite |