Landscape Boulder / River Rock
Granitic or Quartzite Rock
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Landscape Boulder / River Rock
Granitic or Quartzite Rock
Basalt
Extrusive Igneous Rock
Basalt Pebble
Extrusive Igneous Rock
Granite
Intrusive igneous rock
Basalt Pebble
Extrusive Igneous Rock
Basalt
Extrusive igneous rock
River Stone (likely Basalt or Gabro)
Mafic Igneous Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)
Quartzite
Quartzite
Chert
Chert (Microcrystalline Silica, SiO2)
Biotite Schist
Biotite Schist (Rich in K(Mg,Fe)3AlSi3O10(OH)2)
Gneiss
High-grade Metamorphic Gneiss
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite and Porphyry Pebbles
Intrusive Igneous Rock
Granite Pebble
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite Pebble
Phaneritic Igneous Rock
Granite
Intrusive Igneous Rock
Granite Boulder
Intrusive Igneous Rock
Granite Boulder
Intrusive Igneous Rock
Granite Pebble
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Granite
Intrusive Igneous Rock
Dark mafic rock, likely basalt
Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)
Dark igneous rock, likely basalt
Basalt; chiefly plagioclase feldspar, pyroxene, and possibly olivine
Granite
Granitoid
Sandstone (with potential fossil fragments)
Sandstone (SiO2 dominated with iron oxides)
Sandstone (likely Graywacke or Lithic Sandstone)
Clastic Sedimentary Rock
Weathered granitic rock fragment
Granite, predominantly quartz–feldspar–mica assemblage
Brown Sandstone (River Rock)
Arenite
Conglomerate (Greenstone/Pebble Conglomerate)
Polymictic Conglomerate
Granite
Intrusive igneous felsic rock
Granite
Granite (Felsic Plutonic Rock)
Granodiorite (River Rock / Cobble)
Granodiorite; Phaneritic intrusive igneous rock dominated by plagioclase, quartz, and hornblende/biotite
Granite
Granite (Phaneritic igneous rock)
Granite
Phaneritic Igneous Rock (Granite)
Quartz Pebble
Silicon Dioxide (SiO2)
Granite
Felsic intrusive igneous rock