| Name: | Osumilite Osm |
| IMA Chemistry: | KFe2(Al5Si10)O30 |
| Chemistry Elements: | The mineral Osumilite contains elements: Potassium (K) Iron (Fe) Aluminum (Al) Silicon (Si) Oxygen (O) |
| Country of Type Locality: | Japan |
| Year First Published: | 1953 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Miyashiro A (1953) Osumilite, a new mineral, and cordierite in volcanic rocks, Proceedings of the Japan Academy 29, 321-323 |
| Structural Group Name: | Milarite |
| Fleischer's Group Name: | milarite |
| Crystal Systems: | hexagonal |
| Oldest Known Age: | 2485 Million Years Ago |
| Mohs Hardness: | 5.5 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 2.63 |
| More Info: | Search Wikipedia: Osumilite (Wiki) Search Mindat: Osumilite Search Web Mineral DB: Osumilite |