| Name: | Grunerite Gru |
| IMA Chemistry: | [box]Fe2+2Fe2+5Si8O22(OH)2 |
| Chemistry Elements: | The mineral Grunerite contains elements: Iron (Fe) Silicon (Si) Oxygen (O) Hydrogen (H) |
| Country of Type Locality: | France |
| Year First Published: | 1853 |
| IMA Status: | Approved,Redefined |
| Status Notes: | Kenngott A (1853) VIII. Ordnung: Spathe. IX. Geschlecht: Augit-Spathe. 4. Grunerit, in Das Mohs'sche Mineralsystem, Verlag und Druck (Wien) 62-77 Redefined: Leake B E, Woolley A R, Arps C E S, Birch W D, Gilbert M C, Grice J D, Hawthorne F C, Kato A, Kisch H J, Krivovichev V G, Linthout K, Laird J, Mandarino J A, Maresch W V, Nickel E H, Rock N M S, Schumacher J C, Smith D C, Stephenson N C N, Ungaretti L, Whittaker E J W, Youzhi G (1997) Nomenclature of amphiboles: Report of the subcommittee on amphiboles of the International Mineralogical Association, commission on new minerals and mineral names, The Canadian Mineralogist 35, 219-246 |
| Structural Group Name: | Amphibole |
| Fleischer's Group Name: | amphibole-group 1 Mg-Fe-Mn-Li |
| Crystal Systems: | monoclinic |
| Oldest Known Age: | 4000 Million Years Ago |
| Mohs Hardness: | 5.5 |
| Diaphaneity: | 1.0 |
| Specific Gravity: | 3.45 |
| More Info: | Search Wikipedia: Grunerite (Wiki) Search Mindat: Grunerite Search Web Mineral DB: Grunerite |