Sandstone
Arenite (SiO2 based)
sedimentary
Category
Industrial Byproduct (Anthropogenic Rock Like Material)
Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.
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Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Sandstone (SiO2 dominated)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Sandstone (Arenite)
sedimentary
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
River Cobble (Weathered Granitoid)
Granodiorite / Quartz Diorite
igneous
Sandstone (lithic wake or graywacke)
Clastic sedimentary rock (primarily quartz and lithic fragments)
sedimentary
Sandstone (Lithic Arenite)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Small rounded pebble
Indeterminate lithic grain; likely weathered sandstone, iron-stained quartz-rich rock, or a concretion
sedimentary
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Chert (Jasper)
Silicon dioxide (SiO2)
sedimentary
Diamond (faceted)
Carbon (C)
gemstone
Granodiorite
Granodiorite (intermediate plutonic rock)
igneous
Bauxite
Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
sedimentary
Pumice
Pumice (Volcanic glass / Felsic igneous rock)
igneous
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Muscovite Schist
Metamorphic rock primarily composed of quartz and muscovite mica
metamorphic
Polished ocean jasper / brecciated jasper
Jasper, microcrystalline quartz (SiO₂), with iron-oxide and other silicate inclusions
mineral
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Coquina
Coquina (Bioclastic Calcarenite)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 based)
sedimentary
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
igneous
Red Sandstone
Arenite (with Iron Oxide cement)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 dominated)
sedimentary
Sandstone
Arenite
sedimentary
Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein
Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite
metamorphic
Sandstone (likely Arkosic or Ferruginous)
Arenite (SiO2 with iron oxides or feldspar)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Blue Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
sedimentary
Chert / Jasper
Silicon Dioxide (SiO₂)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary