| Name: | Hollandite Hol |
| IMA Chemistry: | Ba(Mn4+6Mn3+2)O16 |
| Chemistry Elements: | The mineral Hollandite contains elements: Barium (Ba) Manganese (Mn) Oxygen (O) |
| Country of Type Locality: | India |
| Year First Published: | 1906 |
| IMA Status: | Approved,Redefined |
| Status Notes: | Named hollandite, though subsequently found to be ferrihollandite: Fermor L L (1906) Manganese in India, Transactions of the Mining and Geological Institute of India 1, 69-131 First report of true hollandite: Miura H (1986) The crystal structure of hollandite. Mineralogical Journal 13, 119-129 Redefined, and chemical formula revised from BaMn2+Mn4+7O16: Biagioni C, Capalbo C, Pasero M (2013) Nomenclature tunings in the hollandite supergroup. European Journal of Mineralogy 25, 85-90 |
| Structural Group Name: | Coronadite |
| Fleischer's Group Name: | coronadite |
| Crystal Systems: | monoclinic|tetragonal |
| Oldest Known Age: | 2400 Million Years Ago |
| Mohs Hardness: | 5.0 |
| More Info: | Search Wikipedia: Hollandite (Wiki) Search Mindat: Hollandite Search Web Mineral DB: Hollandite |