Sandstone
Arenite (Clastic Sedimentary Rock)
Category
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Sandstone
Arenite (Clastic Sedimentary Rock)
Diorite
Phaneritic Intermediate Plutonic Rock (Diorite)
Sandstone (Banded Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)
Granite
Granitoid (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)
Granite (tumbled pebble)
Granite (Plutonic Igneous Rock)
Granite
Granite
Quartz
Quartz (SiO2 - Silicon Dioxide)
Quartzite
Quartzite (primarily SiO2)
Granite
Granite (a plutonic igneous rock)
Granodiorite
Granodiorite
Banded Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartzite and Feldspar grains)
Banded Sandstone (Liesegang Rings)
Sedimentary sandstone with Iron oxide precipitates
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
Granite
Phaneritic Plutonic Igneous Rock (Rich in SiO2)
Pink Granite
Phaneritic plutonic rock (dominated by Alkali Feldspar)
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Yellow Quartzite (River Pebble)
Quartzite (SiO2)
Granite
Granitic intrusive igneous rock
Moqui Marble (Iron Concretion)
Iron Oxide Concretion (Goethite/Hematite Cemented Sandstone)
Peridotite
Ultramafic intrusive rock (Peridotite)
Quartzite
Quartzite (primarily SiO2)
Sandstone
Arenite
Siltstone
Siltstone (primarily composed of microcrystalline Quartz and Feldspar)
River Quartzite or Chert Pebble
Quartzite (primarily Silicon Dioxide - SiO2)
Glauconitic Sandstone (or Greensand)
Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Granite
Granite (Phaneritic intrusive igneous rock)
Quartzite with Chert inclusions
Metamorphosed Quartz-rich Rock (SiO2)
Granite
Granite (Phaneritic Quartz-Feldspar Igneous Rock)
Coarse-grained Granite
Phaneritic Granite (contains Quartz, Feldspar, and Mica)
Schist
Schist (metamorphic rock)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Pink Granite (Alkali Feldspar Granite)
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8)
Sandstone (with Limonite staining)
Arenite (FeOx-rich)
Red Sandstone (Old Red Sandstone Pebble)
Arenite with iron oxide (Fe2O3) cement
Quartzite
Quartzite (SiO2)
Sandstone (likely with Borings or Vesicular Basalt)
Clastic Sedimentary Rock (Sandstone)
Quartzite (River Pebble)
Quartzite (SiO2)
Granite (Pink/Red)
Phaneritic Plutonic Felsic Rock (major minerals: Quartz, Orthoclase Feldspar, Plagioclase Feldspar)
Pink Granite (Water-worn Cobble)
Phaneritic Felsic Intrusive Igneous Rock
Granite
Granite (Felsic intrusive igneous rock)
Granite
Phaneritic plutonic felsic rock