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
Hematite

Corundum

Magnetite

 

(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.

Queensland Boulder Opal Specimen

AU $65.00 (0 Bids)
End Date: Tuesday Mar-3-2020 17:17:11 EST
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Andamooka And Coober Pedy Opal Rough All Pieces Have Color

AU $45.00 (0 Bids)
End Date: Friday Mar-6-2020 14:02:13 EST
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SHUNGITE 2 x ELITE NOBLE FOR WATER PURIFICATION

AU $120.00 (0 Bids)
End Date: Monday Mar-2-2020 21:20:12 EST
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Andamooka Natural Opal Matrix Rough Specimen

AU $50.00 (0 Bids)
End Date: Thursday Mar-5-2020 17:23:06 EST
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Andamooka And Coober Pedy Opal Rough All Pieces Have Color

AU $45.00 (1 Bid)
End Date: Thursday Mar-5-2020 16:49:44 EST
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Fluorite on Quartz Second Soviet Mine Dal'negorsk Russia

AU $30.00 (0 Bids)
End Date: Friday Feb-28-2020 19:53:40 EST
Buy It Now for only: AU $39.00
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Fluorite on Quartz with Pyrite Yaogangxian Mine, Hunan province, China

AU $25.00 (0 Bids)
End Date: Friday Feb-28-2020 19:53:26 EST
Buy It Now for only: AU $32.50
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