Lake Superior Agate
SiO2 (Quartz variety chalcedony)
gemstone
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
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Quartz Vein Rock with Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Geode
Quartz / Chalcedony nodule with mineralized cavity
sedimentary
Quartz (Iron-Stained / Ferruginous Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony / Carnelian
Silicon Dioxide (SiO2)
mineral
Raw Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Rose Quartz / Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Emerald in Quartz Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
gemstone
Citrine
Silicon Dioxide (SiO2)
gemstone
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Mixed Mineral and Fossil Collection
Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)
mineral
Planet Earth
Gaia (Silicate Terrestrial Planet)
metamorphic
Granite
Intrusive Igneous Rock
igneous
Selenite
Gypsum (CaSO4·2H2O)
mineral
Satin Spar Gypsum (Satin Spar Selenite)
Hydrous calcium sulfate (CaSO4%2H2O)
mineral
Satin Spar Gypsum (Satin Spar Selenite)
Hydrous calcium sulfate (CaSO4%C2%A02H2O)
mineral
Pyrite (Fools Gold)
Iron Disulfide (FeS2)
mineral
Limonite Boxwork / Iron Ore Concretion
FeO(OH)qnH2O (Hydrated iron oxide)
sedimentary
Bloodstone
Heliotrope (Chalcedony)
mineral
Satin Spar Selenite
Gypsum (CaSO4·2H2O)
mineral
Pyrite in Quartz
FeS2 (Iron Pyrite) with SiO2 (Quartz)
Mineral/Igneous/Hydrothermal
Goethite / Limonite Gossan
Goethite, FeO(OH)
mineral
Granodiorite
Granodiorite
Igneous
Graphite
Graphite (Carbon, C)
mineral
Jasper or Agate
Silicon dioxide (SiO2)
Mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Dark volcanic sand / basaltic sand
Basalt-derived lithic sand, chiefly plagioclase, pyroxene, and volcanic glass
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Moss-covered)
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar (Granitic)
KAlSi3O8 (Potassium Feldspar)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral