Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
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Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Green aventurine beads
Quartz (SiO₂), typically green quartzite/aventurine with fuchsite mica inclusions
mineral
Amazonite
K(AlSi3O8)
mineral
Petrified Wood
Silicified wood / Permineralized wood (SiO2)
fossil
Mammoth or Mastodon Tooth Fossil
Mammuthus / Mammut tooth
fossil
Shark Tooth Fossil
Vertebrate fossilized tooth (Chondrichthyes)
fossil
Fossilized Brachiopod
Brachiopoda (Phylum)
fossil
Fossil Shark Tooth
Selachimorpha (Chondrichthyes dental fossil)
sedimentary
Zebra Jasper
Silicon Dioxide (SiO2) with inclusions
sedimentary
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)
Mineraloid (Industrial byproduct)
Sandstone
Clastic sedimentary rock (Quartz arenite or Arkose)
sedimentary
Bivalve Fossil
Bivalvia (Phylum Mollusca)
Fossil
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Sandstone
Sandstone (composed predominantly of SiO2)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Quartz (worked as a tool or artifact)
Silicon Dioxide (SiO2)
mineral
Gravel / Limestone Fragment
Calcium Carbonate (CaCO3) / Fine-grained Sedimentary Rock
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic plutonic rock (SiO2 rich)
igneous
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Gold and Silver (Metal Components of an Antique Pocket Watch)
Native Gold (Au) and Native Silver (Ag)
mineral
Polished kambaba jasper
Orbicular stromatolitic jasper; microcrystalline quartz (SiO₂) with chlorite/amphibole-rich inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone (with Iron Staining)
Arenite (Siliclastic sedimentary rock)
sedimentary
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Pegmatite (Quartz with Tourmaline/Biotite inclusions)
Igneous Pegmatite
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (with manganese staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Slag Glass
Silicon dioxide with impurities
mineral
Vesicular basalt (scoriaceous basalt)
Basalt, primarily plagioclase, pyroxene, and iron-rich olivine; vesicular variety may be termed scoria
igneous
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
sedimentary
Sandstone
Quartz Arenite / Sedimentary Rock
sedimentary
Sandstone
Arenite (Sandstone)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Weathered iron-rich sandstone or lateritic rock
Quartz-rich sandstone with iron-oxide/hydroxide cement; possible goethite-bearing laterite
sedimentary
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral (man-enhanced)
Fossilized tooth, likely mammalian molar
Indeterminate Mammalia; mineralized dentine and enamel
fossil