Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Category
Anthropogenic (Man Made Product Subject To Geological Processes)
Browse anthropogenic (man made product subject to geological processes) specimens identified by the Rock Identifier community.
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Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Opalite
Man-made opalescent glass
gemstone
Fluorite
Calcium Fluoride (CaF2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite Cobble
Quartzite (SiO2)
metamorphic
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartzite Pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Green Quartz (Prasiolite)
Crystalline Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite river pebble
Quartzite (SiO2)
metamorphic
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2
metamorphic
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
mineral
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Specularite (Specular Hematite)
Iron Oxide (Fe2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz Star-cut crystal
Silicon Dioxide (SiO2)
mineral
Quartz (or Chert/Flint)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Rhodonite (MnSiO3)
mineral
Peridotite
Ultramafic intrusive igneous rock
igneous
Milky Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite with Iron Staining
Metamorphic Quartz Sandstone
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Manufactured Glass (Simulant)
Quartzite
Quartzite (SiO2)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Diamond (or Simulant)
Carbon (C)
gemstone
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic