Basalt with Quartz/Calcite Veins
Aphanitic Mafic Igneous Rock (Hydrothermal Veined)
Category
Browse not a rock (man made polymer) specimens identified by the Rock Identifier community.
Basalt with Quartz/Calcite Veins
Aphanitic Mafic Igneous Rock (Hydrothermal Veined)
Conglomerate
Conglomerate (Detrital Sedimentary Rock)
Vesicular Basalt (Scoria)
Vesicular Basalt
Migmatite
Migmatite (Mixed metamorphic-igneous rock)
Sandstone with Quartz Veins
Arenite (primarily SiO2 with Fe2O3 staining)
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
Basalt
Extrusive igneous rock
Granodiorite or Diorite
Granodiorite / Diorite
Serpentinite (often called Jade or Nephrite substitute)
Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
Botryoidal Chalcedony (Desert Rose / Agate)
Silicon Dioxide (SiO₂)
Moonstone
Orthoclase (Potassium Aluminum Silicate), Formula: (K,Na)AlSi3O8
Quartz Vein in Sandstone
Sandstone with Hydrothermal Quartz (SiO2)
Shale
Shale (clastic sedimentary rock)
Granite
Phaneritic Igneous Rock (Granite)
Basalt (Vesicular or Porphyritic River Pebble)
Mafic Volcanic Rock (Aphanitic to Porphyritic Basalt)
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
Quartz pebble
Silicon Dioxide (SiO2)
Green Jasper
Microcrystalline Quartz (SiO2)
Garnet Gneiss
Garnetiferous Gneiss
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
Ferruginous Sandstone (Ironstone)
Arenite with Limonite/Goethite cement
Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
Pumice
Pumice (Amorphous volcanic glass)
Quartz Geode
Silicon Dioxide (SiO2)
Serpentinite
Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)
River Stone (likely Basalt or Greywacke)
Basalt with mineral veining
Mixed Rock Collection
Polylithic Geological Specimen Mix
Agate Geode
Silicon Dioxide (SiO2)
Wishing Stone with Quartz Veins
Quartzite or Quartz-veined Metamorphic Rock (composed mainly of SiO2)
Basalt with Quartz/Calcite Vein
Amygdaloidal Basalt (matrix) with Mineral Vein filling
Basalt (Weathered)
Extrusive mafic volcanic rock
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
Quartz Grain
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Granite Pebble
Intrusive Igneous Rock
Granite
Granite
Granite
Felsic intrusive igneous rock
Granite
Intrusive Igneous Rock
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
Quartz Geode
Silicon Dioxide (SiO2) in Geode form