Vlasovite
Na2ZrSi4O11 [CNMNC approved formula]
Named for Kuz'ma Alekseevich Vlasov (1905-1964), founder of the Institute of Mineralogy, Geochemistry, and Crystal Chemistry of Rare Elements, Moscow, Russia.
| IMA status : | Approved Species 1961 () |
| CLASSIFICATION | |
| Dana (8th edition) : |
66.02.02.01 |
| (66) Inosilicate Double-Width Unbranched Chains, W=2 | |
| (66.02) with P=2 non-amphibole configuration | |
| (66.02.02) | |
| Nickel-Strunz (10th edition) : |
09.DM.25 |
| (09) Silicates | |
| (09.D) Inosilicates* Structural terminology per Liebau (1985) | |
| (09.DM) with 6-periodic single chains | |
| Crystal system: | Monoclinic System |
| Point group (H-M): | 2/m — prismatic |
| Other Properties: | Gemstone Extremely Rare. |