Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Category
Not A Rock Or Mineral
Browse not a rock or mineral specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite
sedimentary
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic
Basalt with Calcite Veins
Aphanitic mafic volcanic rock with CaCO3 inclusions
igneous
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
sedimentary
Conglomerate
Conglomerate
Sedimentary Rock
Red Sandstone
Arenite
sedimentary
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
igneous
Limonite (Iron Ore)
Goethite and related iron hydroxides (FeO(OH)·nH2O)
mineral
Sandstone Concretion
Sedimentary concretion
Sedimentary
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
sedimentary
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Glauconitic Sandstone (Greensand)
Glauconitic Quartz Arenite (containing Glauconite, (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Vesicular Basalt
Amygdaloidal Basalt (Mafic extrusive volcanic rock)
Igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Turquoise in Matrix
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Granite Pebble
Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Granodiorite
Granodiorite (containing Plagioclase, Quartz, and Biotite)
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
igneous
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Botryoidal Quartz / Calcite Geode crust
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Sandstone
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
metamorphic
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
sedimentary
Unakite
Epidote-Feldspar rock
Metamorphic Rock
Diorite (Salt and Pepper Rock)
Diorite
igneous
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Amygdaloidal Basalt
Amygdaloidal Mafic Volcanic Rock (Basalt)
igneous
Sandstone
Arenite
sedimentary