Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Category
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Serpentine
Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)
Red Sandstone
Arenite (Ferruginous Sandstone)
Travertine
Terrestrial Sedimentary Limestone (CaCO3)
Limonite-stained Chert/Jasper
Microcrystalline Quartz (SiO2) with Iron Oxides (FeO(OH)·nH2O)
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
Quartz
Silicon Dioxide (SiO2)
Greenschist
Greenschist (containing Chlorite, Actinolite, and Epidote)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Basalt
Basalt
Chert (Green Chert)
Microcrystalline silica (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
Quartzite
Quartzite (predominantly SiO2)
Chert
Microcrystalline Quartz (SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Yellow Ochre / Limonite
FeO(OH)·nH2O (Hydrated Iron Oxide Mix)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Pumice
Pumiceous volcanic glass
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
Amethyst on Agate/Basalt Matrix
Silicon Dioxide (SiO2) with iron impurities
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chert (Flint Nodules)
Chert (Microcrystalline Quartz, SiO2)
Smoky Quartz with Chert
Silicon Dioxide (SiO2)
Orthoclase (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Bauxite
Bauxite (mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
Mica Schist
Foliated Metamorphic Rock (Schist)
Hematite
Iron(III) oxide (Fe2O3)
Granite
Felsic intrusive igneous rock
Amethyst Geode
Amethyst (Silicon Dioxide), Formula: SiO2
Amethyst Geode
Silicon Dioxide (SiO2) with iron impurities
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Fieldstone/Pebble)
Silicon Dioxide (SiO2)
Quartz River Pebbles
Silicon Dioxide (SiO2)
Gneiss
Foliated Metamorphic Rock (Gneiss)
Oolite (Ooids)
Oolitic Limestone (Principal mineral: Calcite, CaCO3)
Amethyst
Silicon dioxide (SiO2)