Name: | Arfvedsonite Arf |
Specimens in Collection: | |
IMA Chemistry: | NaNa2(Fe2+4Fe3+)Si8O22(OH)2 |
Chemistry Elements: | The mineral Arfvedsonite contains elements: Sodium (Na) Iron (Fe) Silicon (Si) Oxygen (O) Hydrogen (H) |
Country of Type Locality: | Denmark (Greenland) |
Year First Published: | 1823 |
IMA Status: | Approved,Redefined |
Status Notes: | Brooke H J (1823) A description of the crystalline form of some new minerals. Arfwedsonite, The Annals of Philosophy 5, 381-384 |
Structural Group Name: | Amphibole |
Fleischer's Group Name: | amphibole-group 4 Na |
Crystal Systems: | monoclinic |
Oldest Known Age: | 2500 Million Years Ago |
Mohs Hardness: | 5.5 |
Diaphaneity: | 1.0 |
Specific Gravity: | 3.4 |
More Info: | Search Wikipedia: Arfvedsonite (Wiki) Search Mindat: Arfvedsonite Search Web Mineral DB: Arfvedsonite |