Strontiomelane
(Sr,Ba,K)Mn8O16 [CNMNC approved formula]
Named The name reflects the presence of strontium and the black color, melanos in Greek.
| IMA status : | Approved Species 1999 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
07.09.01.05 |
| (07) Multiple Oxides | |
| (07.09) | |
| (07.09.01) Cryptomelane Group (Hard black, fine-grained) | |
| Nickel-Strunz (10th edition) : |
04.DK.10 |
| (04) Oxides and Hydroxides | |
| (04.D) Metal:Oxygen = 1:2 and similar | |
| (04.DK) With large (+- medium-sized) cations; tunnel structures | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |