Gahnite, ZnAl2O4, is a rare mineral belonging to the spinel group. It forms octahedral crystals which may be green, blue, yellow, brown or grey. It often...
3 KB (195 words) - 15:03, 31 January 2023
Academy of Sciences. He also had a managerial career in Swedish mining. Gahnite, named after Gahn Weeks, Mary Elvira (1932). "The discovery of the elements:...
3 KB (242 words) - 12:57, 24 June 2024
Fluorapatite Fluorapophyllite Fluorite Forsterite Friedelite Gadolinite Gahnite Gahnospinel Garnet group: Pyralspite Almandine Pyrope Spessartine Ugrandite...
13 KB (868 words) - 18:14, 14 November 2024
mineralogist who discovered manganese in 1774, and after whom the mineral gahnite was named. Henrik Gahn (1747–1816), physician and student of Linnaeus,...
4 KB (428 words) - 09:16, 7 May 2024
of fluorapatite) Gabrielite Gadolinite (mineral group) Gagarinite-(Ce) Gahnite Galaxite Galena Galkhaite Gananite Ganophyllite Garnet (mineral group)...
42 KB (2,782 words) - 04:37, 12 November 2024
is present is in sillimanite-quartz veins which are paired closely with gahnite. While microcline-quartz-mica-pegmities and Precambrian schists, gneisses...
7 KB (809 words) - 06:56, 14 November 2024
Gearksutite Gak Giraudite-(Zn) Gir-Zn Görgeyite Gög Grootfonteinite Gtf Gahnite Ghn Gebhardite Geb Girvasite Gvs Gormanite Gm Grossite Gss Gaidonnayite...
180 KB (418 words) - 05:15, 30 June 2024
spinels: Spinel: MgAl2O4, after which this class of minerals is named Gahnite: ZnAl2O4 Hercynite: FeAl2O4 Galaxite: MnAl2O4 Pleonaste: (Mg,Fe)Al2O4 Iron...
15 KB (1,943 words) - 11:13, 15 July 2024
Peridot 0.020 0.012–0.013 Spinel 0.020 0.011 Vesuvianite 0.019–0.025 0.014 Gahnite 0.019–0.021 — Clinozoisite 0.019 0.011–0.014 Labradorite 0.019 0.010 Axinite...
33 KB (3,423 words) - 02:55, 7 November 2024
ZrO2 Uraninite UO2 Thorianite ThO2 XY2O4 form Spinel group Spinel MgAl2O4 Gahnite ZnAl2O4 Magnetite Fe3O4 (Fe2+Fe3+2O4) Franklinite (Zn,Fe,Mn)(Fe,Mn)2O4...
18 KB (1,957 words) - 06:51, 23 October 2024