Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
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Magnetite (Charnockite Regional Variation)
Magnetite (Fe3O4)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Grain
Silicon Dioxide (SiO2)
mineral
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (Iron-rich)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
mineral
Greenstone
Protolith: Basaltic rock
metamorphic
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Graphic Granite / Pegmatite
Graphic Granite (Alkali Feldspar and Quartz)
igneous
Likely quartz crystal fragment
Quartz (SiO₂), possibly a small tumbled or cleaved fragment
mineral
Weathered iron-rich rock, possibly limonite/goethite
Limonite (hydrated iron oxides; commonly goethite, FeO(OH), mixed with hematite)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Lapis Lazuli
(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2 (Complex silicate rock)
rock
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Tumbled basalt (likely)
Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine
igneous
Tumbled milky quartz
Quartz, SiO₂
mineral
Magnetite
Fe3O4 (Iron(II,III) oxide)
mineral
Mica Schist
Schist (biotite/muscovite schist)
metamorphic
Magnetite / Hematite mix
Magnetite (Fe3O4) and Hematite (Fe2O3)
mineral
Chiastolite
Andalusite (Al2SiO5) with carbonaceous inclusions
metamorphic
Milky Quartz
Quartz (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Feldspar (with Quartz / Iron Staining)
Potassium Feldspar / Plagioclase (KAlSi3O8 - NaAlSi3O8 to CaAl2Si2O8)
mineral
Milky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Rhodochrosite Pebble
MnCO3 (Manganese Carbonate)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral