Sandstone with Lichen and Iron Oxide Staining
Quartz Arenite / Sandstone
sedimentary
Category
Not A Rock
Browse not a rock specimens identified by the Rock Identifier community.
Learn about Not A Rock in the encyclopedia
View all →
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Granite pebble
Granite, typically quartz–feldspar–mica aggregate
igneous
Greenstone, likely altered basalt
Metabasalt (chlorite–actinolite–epidote assemblage), likely greenschist-facies greenstone
metamorphic
Weathered granite or granitic gneiss
Granite; primarily quartz, feldspar, and mica
igneous
Basalt with Xenolith
Extrusive Igneous Rock containing Mantle Xenolith
igneous
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
sedimentary
Basalt
Extrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
igneous
Granite
Felsic intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock (composed mainly of quartz, alkali feldspar, and plagioclase)
igneous
Granite
Intrusive Igneous Rock
igneous
Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
metamorphic
Shale (or Mudstone)
Laminose Mudrock (composition: clay minerals, quartz, and mica flakes)
sedimentary
Druzy Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
sedimentary
Xenolith in Basalt
Mafic Igneous Rock with Felsic Inclusion
igneous
Mixed Rock Collection (Pebbles and Stones)
Various geological specimens
igneous, sedimentary, and metamorphic
Quartzite Pebble with Feldspar Vein
Quartzite (SiO2) with Feldspar (KAlSi3O8)
metamorphic
Schist (likely Mica Schist)
Mica Schist
metamorphic
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Beach Pebble (Basalt/Porphyry)
Weathered Basalt or Porphyry
igneous
Quartz pebble with calcite
Silicon dioxide (SiO2) with Calcium carbonate (CaCO3)
sedimentary
Yellow Jasper with Hematite
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Basalt
Extrusive igneous rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Mafic extrusive igneous rock
igneous
Basalt Cobble
Vesicular Basalt (Mafic Extrusive)
igneous
Granodiorite
Granodiorite
igneous
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Vesicular Basalt (Lava Rock)
Basalt
igneous
Shale
Shale (Lutite)
sedimentary
Vesicular Basalt (Pumice-like)
Vesicular Basalt
igneous
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
igneous
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Sandstone (with Rock Art)
Sandstone (Clastic Sedimentary Rock)
sedimentary
Vesicular Basalt (or Scoria)
Extrusive Igneous Rock (Mafic)
igneous
Granite-like igneous rock
Likely medium-grained granite or granodiorite; quartz–feldspar–mica aggregate
igneous