Sandstone
Sandstone (principally SiO2/Silicon Dioxide)
sedimentary
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Learn about Man Made Material (Simulated Mineral) in the encyclopedia
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Vuggy Limestone
Calcium Carbonate (CaCO3) with Quartz/Calcite inclusions
sedimentary
Asphalt (Bituminous pavement fragment)
Artificial conglomerate / Bitumen-Aggregate mixture
sedimentary
Jasper
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Yellow chalcedony (likely lemon quartz or citrine)
Cryptocrystalline silica, SiO₂; possible quartz variety
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Olivine (Peridot)
Olivine Group (Mg,Fe)2SiO4
mineral
Epidosite
Epidosite (Metasomatic calcium-aluminum silicate rock)
metamorphic
Turtleback Rock (Brecciated Diabase / Granite)
Brecciated hypabyssal intrusive rock
igneous
Basalt (Glassy)
Basalt (Aphanitic-Glassy texture)
igneous
Mookaite Jasper
Silicified Radiolarite (SiO2 with impurities)
sedimentary
Thunderegg (Agetized Geode nodule)
Rhyolitic Agate Nodule (SiO2 filling volcanic cavities)
igneous
Sandstone (Pebble / Cobble)
Arenite / Sedimentary Rock (composed of quartz and feldspar)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
White Jade (Nephrite)
Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2
Mineral
Black tourmaline beads (likely schorl)
Schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
mineral
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Sandstone pebble
Sandstone (siliciclastic sedimentary rock)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Beach Pebble)
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone
Sedimentary Rock (Quartz/Feldspar grains cemented together)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone with Lichen and Iron Oxide Staining
Quartz Arenite / Sandstone
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Dyed howlite or turquoise imitation
Howlite: Ca₂B₅SiO₉(OH)₅; turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Tumbled yellow jasper or petrified wood fragment
Microcrystalline quartz (chalcedony), SiO₂, possibly iron-oxide-bearing jasper
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Polished brecciated jasper pebble
Microcrystalline quartz (SiO₂), with iron-oxide inclusions
mineral
Milky quartz (likely quartzite or massive quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Iron-rich hematite/goethite concretion (likely limonite)
Hematite (Fe₂O₃) with goethite (FeO(OH)) and limonite
mineral
Amber with dark mineral/organic inclusions
Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)
gemstone