Sandstone with Quartz Vein
Arenite with SiO2 intrusion
Category
Browse not a rock (man made polymer) specimens identified by the Rock Identifier community.
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
Gneiss
Foliated Metamorphic Rock (Gneiss)
Dalmatian Jasper
Peralkaline rock with Tourmaline spots
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
Porphyry
Porphyritic Igneous Rock
Quartzite River Rock
Metamorphic Rock (Quartzite)
Basalt
Mafic Igneous Rock
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite Pebble
Intrusive igneous rock (Quartz, Feldspar, Mica)
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite Pebble
Granite
Granite
Phaneritic Felsic Igneous Rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Granodiorite
Granodiorite
Basalt (Vesicular)
Vesicular Basalt
Sandstone
Arenite (SiO2 based with quartz grains)
Granite
Intrusive igneous rock
Granite Pebble
Intrusive Igneous Rock
Schist (Oxidized)
Mica Schist with Iron Oxide staining
Limestone
Calcium Carbonate (CaCO3)
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Grey and White specimens)
Calcium Carbonate (CaCO3)
Fossil Shell
Phylum Mollusca (Bivalvia or Brachiopoda)
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Black-and-white gneiss
Gneiss, chiefly quartz–feldspar with dark biotite/amphibole bands
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Quartz Geode
Silicon Dioxide (SiO2)
Porphyritic Igneous Rock / Basalt or Andesite Xenolith in Granite or Quartzite
Silicate rock with contrasting xenolith/inclusion
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2) with various iron-oxide inclusions
Shatter Cone
Impactite (Shatter Cone texture)