Oxides & Hydroxides

The following list includes the most significant minerals which occur in nature as oxides or hydroxides. The various forms of silica (quartz, chalcedony and opal) are also discussed on a separate page. To view the properties of an element, click on its name. 

ANATASE ARSENOLITE BAUXITE BIXBYITE BOLEITE BRAUNITE BROOKITE BRUCITE CASSITERITE CHALCOPHANITE CHROMITE CHRYSOBERYL COLUMBITE CONICHALCITE CORUNDUM CRISTOBALITE CUPRITE DELAFOSSITE DIASPORE ESMERALDITE FRANKLINITE GAHNITE GALAXITE GIBBSITE GOETHITE HAUSMANNITE HEMATITE HERCYNITE HETAEROLITE HOGBOMITE HOLLANDITE HUEBNERITE HYDROHETAEROLITE ILMENTITE LEPIDOCROCITE LIMONITE MAGNETITE MANGANITE MANGANOSITE MARTITE MINIUM MONTROYDITE OCTAHEDRITE OPAL PARAMELACONITE PERICLASE PITCHBLENDE PLATTNERITE PSILOMELANE PYROCHROITE PYROLUSITE QUARTZ RUTILE SENARMONTITE SKEMMATITE SPINEL STIBICONITE TELLURITE TENORITE TRIDYMITE TUNGSTITE TURGITE VALENTINITE VANOXITE WATER ZINCITE

(The database is not intended to be a comprehensive list of all minerals but does contain a substantial number of them and we are constantly adding to it.)
 

Mineral specimens now available (at eBay): Click on an item to view details and, if you wish, bid.

AUTHENTIC KARELIAN ELITE SHUNGITE STONE ROCK CRYSTAL**10 g**98% fulleren carbon AU $6.99 End Date: Thursday Jan-10-2019 14:34:25 EST Buy It Now for only: AU $6.99 Buy It Now | Add to watch list CREEDITE - Navidad Mine, Durango, Mexico AU $18.00 End Date: Thursday Dec-20-2018 20:11:17 EST Buy It Now for only: AU $18.00 Buy It Now | Add to watch list CREEDITE - Navidad Mine, Durango, Mexico AU $18.00 End Date: Wednesday Jan-9-2019 20:01:12 EST Buy It Now for only: AU $18.00 Buy It Now | Add to watch list 353.5gBeautiful Natural Yellow Triangle Calcite Crystal Cluster Mineral Specimen AU $0.99 (1 Bid) End Date: Monday Dec-17-2018 19:36:53 EST Bid now | Add to watch list 19.7 mm TERMINATED TANZANITE CRYSTAL, TANZANIA AU $47.40 (0 Bids) End Date: Monday Dec-17-2018 10:16:34 EST Bid now | Add to watch list GYPSUM, SELENITE - Mount Gunson, Pernatty Lagoon, South Australia AU $18.00 End Date: Wednesday Dec-19-2018 21:18:15 EST Buy It Now for only: AU $18.00 Buy It Now | Add to watch list FLUORITE CLUSTER SOURCED FROM CHINA. NICE BARGAIN PIECE. AU $5.99 (0 Bids) End Date: Friday Dec-14-2018 16:58:09 EST Buy It Now for only: AU $20.00 Buy It Now | Bid now | Add to watch list