Granite
Felsic intrusive igneous rock
igneous
Category
Man Made Rock (Technosol)
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Learn about Man Made Rock (Technosol) in the encyclopedia
View all →
Granite
Felsic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock (Mainly Quartz, Feldspar, and Mica)
igneous
Conglomerate
Conglomerate rock
sedimentary
Dalmatian Stone
Dalmatian Jasper (Aplite rock composition)
igneous
Sandstone (Wonderstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
igneous
Basalt
Mafic extrusive igneous rock
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or igneous host
sedimentary
Quartzite River Pebble
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Porphyritic Basalt (Drill Core)
Porphyritic Basalt with Plagioclase Phenocrysts
igneous
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic
Ferruginous Sandstone (Ironstone)
Sandstone with Hematite/Goethite cement (SiO2 + FeO(OH))
sedimentary
Grey River Pebble (Greywacke / Basalt)
Stream-rounded silicate rock pebble
sedimentary
Greywacke (River Pebble with Quartz Veins)
Greywacke (Indurated Sandstone); Veins: SiO2 (Quartz)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary/igneous host
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
mineral
Geode (Unopened)
Siliceous Geode (SiO2)
sedimentary
Biotite (Black Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
mineral
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Eroded Limestone with Iron Staining
Carbonate Rock (CaCO3)
sedimentary
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Granite
Granite
igneous
Glacial Cobble with Granite Inclusion
Porphyritic Basalt or Andesite containing Granitic Xenolith
igneous
Weathered granite pebble
Granite, mainly quartz, feldspar, and mica; approximate composition SiO₂-rich continental crust
igneous
Rounded gray metamorphic rock, likely quartzite or gneiss
Quartz-rich metamorphic rock; exact identification is uncertain from the photograph
metamorphic
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Assorted Beach Rocks and Pebbles
Various (Granite, Basalt, Quartz, Conglomerate, etc.)
igneous, sedimentary, metamorphic
Vesicular Basalt (or Rhyolite)
Extrusive Igneous Rock with Vesicular Texture
igneous
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
mineral
Shale (with Iron Staining)
Argillaceous mudstone / Shale
sedimentary
Sandstone
Arenite
sedimentary
Quartz-veined Sandstone Pebble
Quartzite-veined Arenite
sedimentary