Sandstone
Arenite (SiO2 principal component)
Category
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 principal component)
Sandstone (Calcareous/Lithic)
Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 predominantly)
Sandstone
Arenite
Sandstone
Sedimentary Rock (Quartz Sandstone)
Sandstone
Sandstone (SiO2 dominant)
Sandstone
Arenite (predominantly SiO2)
Sandstone (Micaceous)
Clastic Sedimentary Rock - Micaceous Litharenite (SiO2 principal)
Sandstone
Arenite (typically SiO2 + others)
Quartz Pebble
Silicon Dioxide (SiO2)
Geode or Concretion
Silica-filled nodule (likely SiO2)
Blue-green fluorite crystal
Fluorite (calcium fluoride, CaF₂)
Petrified Rugose Coral (Horn Coral)
Order Rugosa (extinct coral)
Tumbled quartz-rich pebble
Microcrystalline quartz (SiO₂), possibly weathered chert or chalcedony
Rounded gray stone, likely quartz-rich granitic rock
Probable granite or granitic gneiss; mainly quartz, feldspar, and mica
Polished brecciated jasper
Jasper, opaque microcrystalline quartz (SiO₂), likely brecciated jasper with iron-oxide and dark silicate inclusions
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
Raw Calcite
Calcite (Calcium Carbonate - CaCO3)
Sandstone (Red)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Sandstone (Wonderstone)
Clastic Sedimentary Rock (primarily SiO2)
Pyrite
Iron Sulfide (FeS2)
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
Feldspar-rich igneous rock, likely granite or gneiss fragment
Granite-like quartz–feldspar rock; exact identification is uncertain from the blurred image
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
Likely quartz-rich metamorphic rock (quartzite or quartz-veined schist)
Quartzite/siliceous schist; chiefly quartz (SiO₂), with probable mica and iron-oxide staining
Jasper
Microcrystalline Quartz (SiO2)
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
Petrified Wood
Silicified Wood / Chalcedony (SiO2)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone
Sedimentary Clastic Rock (Quartz arenite)
Sandstone (likely Siltstone or fine-grained Sandstone)
Sedimentary Rock (Clastic)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Shark Tooth Fossil
Otodus obliquus (or similar prehistoric lamniform shark tooth)
Petrified Wood
Silicified Wood (SiO2)