spinel materials
21Nichromite — General Category Spinel Group Chemical formula (Ni,Co,Fe)(Cr,Fe,Al)2O4 Strunz classification 04.BB.05 Crystal symmetry …
22Ammolite — Infobox mineral name = Ammolite category = fossilized, mineralized Ammonite shell boxwidth = boxbgcolor = imagesize = caption = Unprocessed sample of ammolite, a dragon skin pattern is apparent formula = CaCO3 aragonite polymorph, with minor… …
23Chromite — General Category Oxide minerals Chemical formula (Fe, Mg)Cr2O4 …
24Chrysoberyl — General Category Oxide minerals Spinel group Chemical formula Be …
25Moon Mineralogy Mapper — Left side of the Moon Mineralogy Mapper Operator NASA Major contractors JPL Mission type …
26Garnet — For other uses, see Garnet (disambiguation). Garnet General Category Nesosilicate Chemical …
27Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …
28Magnetite — Not to be confused with Magnesite or Maghemite. Magnetite Magnetite and pyrite from Piedmont Italy …
29Wadsleyite — is a high pressure polymorph of olivine, an orthorhombic mineral found in the Peace River meteorite in Alberta, Canada. In the phase transformations from Mg2SiO4 Fe2SiO4 (forsterite fayalite), olivine is transformed to wadsleyite β Mg2SiO4 and… …
30Grand Guignol Orchestra — Cover of the first Grand Guignol Orchestra volume published by Hakusensha in …
