Chalcedony
Silicon Dioxide (SiO2)
mineral
Category
Mineral Specimen
Browse mineral specimen specimens identified by the Rock Identifier community.
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Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony Agate / Carnelian nodules in Matrix
SiO2 (Silicon Dioxide) with iron oxide inclusions
mineral
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Lake Superior Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Grape Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Ametrine
Quartz (SiO2 with Fe impurities)
gemstone
Agate Nodule / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Mica Schist with Quartz and Muscovite
Muscovite-Quartz Schist
metamorphic
Pegmatite
Coarse-grained intrusive igneous rock
igneous
Sparkling Druzy Quartz on Matrix
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Epidote-bearing Rock
Epidote / Silicate mineral aggregate
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Fe3O4 (Iron(II,III) oxide)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2)
mineral
Quartz with Feldspar and Matrix
Silicon Dioxide (SiO2) with Potassium/Plagioclase Feldspar
mineral
Garnet
Silicate mineral group (e.g., Almandine, Fe3Al2(SiO4)3)
mineral
Almandine Garnet
Iron Aluminum Silicate (Fe3Al2(SiO4)3)
mineral
Orthoclase Feldspar (Granitic)
KAlSi3O8 (Potassium Feldspar)
igneous
Olivine
(Mg,Fe)2SiO4
mineral
Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Galena
Lead Sulfide (PbS)
mineral
Galena
Lead sulfide (PbS)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18 with Chromium/Vanadium traces)
gemstone
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral