Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2)
Quartz (specifically Rose or Smoky tinted Quartz)
Silicon Dioxide (SiO2)
Dyed Agate
Silicon Dioxide (SiO2)
Gold in Quartz Matrix
Native Gold (Au) in Quartz (SiO2)
Garnet
Almandine (Fe3Al2(SiO4)3)
Granite
Phaneritic Plutonic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
Carnelian
Carnelian (Chalcedony / Quartz variety, SiO2)
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Quartzite
Quartzite (SiO2)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Amethyst
Silicon dioxide with iron impurities (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Quartz (Silicon Dioxide with iron impurities), SiO2
Basalt
Basalt (Mafic volcanic rock)
Carnelian
SiO2 (Silicon Dioxide) - Carnelian Agate/Chalcedony
Garnierite in Matrix
Nickel-bearing Magnesium Silicates (Garnierite)
Pink Thulite (Zoisite)
Ca2Al3(SiO4)3(OH) - Manganese-bearing Zoisite
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst
Amethyst (SiO2 with iron impurities)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amazonite
Amazonite (KAlSi3O8)
Amazonite
Microcline (KAlSi3O8) with Pb impurities
Moss Agate
Silicon Dioxide (SiO2) with Chlorite/Oxide inclusions
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Amazonite
Potassium Feldspar (Microcline), K(AlSi3O8)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Amethyst Cluster
Amethyst (Silicon Dioxide), chemical formula: SiO2
Carnelian
Carnelian (Chalcedony/Quartz, SiO2)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Common Opal (Green Opal)
Hydrated Silicon Dioxide (SiO2·nH2O)
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
Moonstone
Orthoclase Feldspar (KAlSi3O8) or Albite mixtures
Basalt River Cobble
Basalt (Mafic Extrusive Igneous Rock)
Limonite (Iron Ore)
Limonite; FeO(OH)·nH2O
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Basalt (River Pebble)
Basalt (Aphanitic Mafic Volcanic Rock)