| Name: | Seamanite Sem |
| IMA Chemistry: | Mn2+3B(OH)4(PO4)(OH)2 |
| Chemistry Elements: | The mineral Seamanite contains elements: Manganese (Mn) Boron (B) Oxygen (O) Hydrogen (H) Phosphorus (P) |
| Country of Type Locality: | USA |
| Year First Published: | 1930 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Kraus E H, Seaman W A, Slawson C B (1930) Seamanite, a new manganese phosphoborate from Iron County, Michigan, American Mineralogist 15, 220-225 |
| Structural Group Name: | |
| Fleischer's Group Name: | |
| Crystal Systems: | orthorhombic |
| Oldest Known Age: | 1795 Million Years Ago |
| Mohs Hardness: | 4.0 |
| Diaphaneity: | 3.0 |
| More Info: | Search Wikipedia: Seamanite (Wiki) Search Mindat: Seamanite Search Web Mineral DB: Seamanite |