Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite (complex silicate composition with iron oxides)
Quartz (Milky/Clear Variety)
Silicon Dioxide (SiO2)
Eclogite
Eclogite (Omphacite + Pyrope)
Banded Agate (specifically Lake Superior Agate)
Silicon dioxide (SiO2) - Cryptocrystalline Chalcedony
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Granodiorite Pebble
Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-feldspar, Quartz, and Biotite)
Unakite (Tumbled)
Epidotized Granite
Andesite River Stones
Andesite
Pink Granite
Granite (Phaneritic intrusive igneous rock dominated by Quartz and K-Feldspar)
Granite Tile (Commercial Granite)
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
Sandstone
Arenite (primarily SiO2)
Pink Granite
Phaneritic Plutonic Rock (Granite with K-Feldspar)
Granodiorite (Riverbed Cobble)
Granodiorite
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
Unakite
Epidotized Granite
Limonitic Quartzite
Metamorphosed sandstone with Limonite (FeO(OH)·nH2O) staining
Granite
Intrusive igneous rock (SiO2 range 65-75%)
Granite
Granite
Quartzite with Quartz Vein
Quartzite (primarily SiO2)
Druzy Quartz
Quartz (Silicon Dioxide, SiO2)
Granite
Phaneritic Plutonic Felsic Rock
Serpentine (Serpentinite)
Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4
Green Quartzite (River Stone)
Metamorphic Quartz (SiO2) with inclusions (typically Fuchsite or Chlorite)
Unakite
Unakite (metasomatized granite)
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Sandstone (Picture Sandstone)
Sandstone (primarily Quartz with Iron Oxide impurities)
Serpentinite
Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
Thunderegg
Agate-filled Rhyolitic Nodule (SiO2)
Unakite
Unakite (Epidotized Granite)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Unakite
Unakite (Episyenite composition: Feldspar, Epidote, and Quartz)
Red Quartzite (Ferruginous Quartz)
Quartzite (SiO2 with Fe2O3 inclusions)
Mica Schist
Mica Schist
Pumice
Pumice (a highly vesicular extrusive igneous rock)
Unakite
Unakite Epidosite (Granite with epidote and orthoclase)
Quartzite with Garnet
Garnetiferous Quartzite (SiO2 + X3Y2(SiO4)3)