Sandstone (Yellow/Tan Sandstone)
Arenite (primarily Quartz, SiO2)
Category
Browse sedimentary or mineral specimens identified by the Rock Identifier community.
Sandstone (Yellow/Tan Sandstone)
Arenite (primarily Quartz, SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Calcite on Host Rock
Calcium Carbonate (CaCO3)
Smoky Quartz (Herkimer-style)
Silicon Dioxide (SiO2)
Hematite (Concretion)
Iron(III) oxide (Fe2O3)
Sandstone pebble
Clastic sedimentary rock (primarily SiO2)
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
Green Fluorite
Calcium Fluoride (CaF2)
Bauxite
Bauxite (Al2O3·2H2O)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Quartz with Iron Oxide
SiO2
Green Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Sandstone
Arenite (SiO2 primarily)
Glauconitic Sandstone
Glauconitic Sandstone (Greensand)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Calcite with Quartz coating
Calcium Carbonate (CaCO3) with Silicon Dioxide (SiO2)
Red Sandstone Pebble
Arenite with Hematite (Fe2O3) cement
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineral composition: Bio-apatite/Calcium Phosphate replaced by various minerals)
Moqui Marble (Concretion)
Iron Oxide Concretion (Hematite-cemented Sandstone)
Sandstone (Painted)
Arenite (primarily SiO2)
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) impurities
Vesicular Basalt with Epidote/Amygdaloidal Basalt
Amygdaloidal Basalt (Mg, Fe)2SiO4 + Ca2(Al, Fe)3(SiO4)3(OH)
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
Celestine (or Celestite)
Strontium sulfate (SrSO4)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 principal)
Sandstone
Arenite (primarily SiO2)
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Bauxite
Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
Sandstone
Sandstone (Arenite)
Sandstone
Arenite (SiO2 based)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 primarily)
Halite
Halite (Sodium Chloride, NaCl)
Limestone
Calcium Carbonate (CaCO3)
Gneiss
Gneiss (High-grade metamorphic rock)
Banded Gneiss
Gneiss (SiO2 enriched metamorphic rock)