Stishovite SiO2 IMA symbol: Sti approved
Stishovite is an oxide or hydroxide mineral with the formula SiO2, crystallizing in the tetragonal system. It has a Mohs hardness of 9.4, a calculated density of 4.272 g/cm3.
Photos Raimond Spekking · CC BY-SA 4.0 · Commons Ma, C.; Tschauner, O.; Beckett, J.R.; Greenberg, E.; Prakapenka, V.B. Zagamiite · CC BY 4.0 · Commons Ma, C.; Tschauner, O.; Beckett, J.R.; Greenberg, E.; Prakapenka, V.B. Zagamiite · CC BY 4.0 · Commons Krizu · CC BY-SA 3.0 · Commons Crystallography Crystal system tetragonal crystal systemWikidata (CC0) Space group P 42/m n m Cell (Å, °) a = 4.1839, b = 4.1839, c = 2.6684; α = 90, β = 90, γ = 90 Cell volume 46.71 ų, Z = 2 Axial ratios 1.0000:1:0.6378calculated from COD 9001682 Source structure COD 9001682 (American Mineralogist, 1995) — 1 of 26 structures
Physical properties Density (calculated) 4.272 g/cm³calculated from COD 9001682 Hardness (Mohs) 9.4single source Wikidata (CC0)
Chemistry (calculated) Molecular weight 60.08 g/molcalculated from the IMA formula Composition (wt%) Si 46.74%, O 53.26%
Classification Nickel-Strunz (10th) 4.DA.40Wikidata (CC0) Nickel-Strunz (9th) 4.DA.40Wikidata (CC0) Dana (8th) 4.4.1.9Wikidata (CC0)
.png){kind=link}
