Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral Specimen
Browse mineral specimen specimens identified by the Rock Identifier community.
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Limonite
FeO(OH)·nH2O
mineral
Chrysocolla in Cuprite
(Cu,Al)2H2Si2O5(OH)4 · nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Sodalite
Sodium aluminum silicate chloride, Na8Al6Si6O24Cl2
mineral
K-Feldspar (Potassium Feldspar)
KAlSi3O8
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper silicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Blue Calcite
Calcium Carbonate, CaCO3
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Tumbled Sunstone
Feldspar group (Oligoclase)
gemstone
Amethyst
Quartz (SiO2)
gemstone
Amethyst
Quartz (SiO2)
gemstone
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony Stalactites
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
gemstone
K-Feldspar Granite or Quartz
Potassium feldspar / Granite pegmatite
igneous
Tourmalinated Quartz
Silicon dioxide with sodium aluminum borosilicate (SiO2 + Na(Al,Fe,Li)3Al6(BO3)3Si6O18(OH)4)
mineral
Clear quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Bumblebee Jasper
Anhydrous Calcium Carbonate with Sulfur and Arsenic (Orpiment/Realgar)
sedimentary
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Quartz with Spessartine Garnet and Iron Staining
Silicon Dioxide (SiO2) with Almandine-Spessartine (Mn3Al2(SiO4)3)
mineral
Quartz Vein in Host Rock
Silicon dioxide (SiO2) veining in silicate matrix
sedimentary
Jasper
Silicon dioxide (Quartz variety), SiO2
sedimentary
Emerald (or possibly Green Glass / Slag)
Beryl (Be3Al2(SiO3)6)
gemstone
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Chevron Amethyst
Silicon Dioxide with Iron Impurities (SiO2)
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst
Quartz (SiO2)
gemstone
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral