| Name: | Robertsite Rbt |
| IMA Chemistry: | Ca2Mn3+3O2(PO4)3ยท3H2O |
| Chemistry Elements: | The mineral Robertsite contains elements: Calcium (Ca) Manganese (Mn) Oxygen (O) Phosphorus (P) Hydrogen (H) |
| Country of Type Locality: | USA |
| Year First Published: | 1973 |
| IMA Status: | Approved |
| Status Notes: | Moore P B, Ito J (1974) I. Jahnsite, segelerite, and robertsite, three new transition metal phosphate species II. Redefinition of overite, an isotype of segelerite III. Isotypy of robertsite, mitridatite, and arseniosiderite, American Mineralogist 59, 48-59 |
| Structural Group Name: | Arseniosiderite |
| Fleischer's Group Name: | arseniosiderite |
| Crystal Systems: | monoclinic |
| Oldest Known Age: | 2840 Million Years Ago |
| Mohs Hardness: | 2.0 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 3.15 |
| More Info: | Search Wikipedia: Robertsite (Wiki) Search Mindat: Robertsite Search Web Mineral DB: Robertsite |