Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)
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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Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Quartzite River Cobble
Quartzite (primarily SiO2)
metamorphic
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Dalmatian jasper
Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions
igneous
Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
sedimentary
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Diamond
Diamond (pure Carbon, C)
mineral
Coal (Bituminous / Anthracite)
Organic Sedimentary Rock (Carbonaceous Rock)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond
C (Native Carbon)
mineral
Chert Nodules (with Quartz Inclusions)
Microcrystalline Quartz (SiO2)
sedimentary
Basalt
Basalt (Mafic igneous rock)
igneous
Milky Quartz with Chlorite/Amphibite Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
mineral
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Serpentinite
Serpentinite (composed primarily of serpentine group minerals including antigorite, chrysotile, and lizardite)
metamorphic
Fossilized Bivalve Shell
Class Bivalvia (fossilized)
fossil
Jasper
Silicon dioxide (SiO2)
Mineral
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Schist
Mica Schist
Metamorphic Rock
Sandstone
Arenite (SiO2 based sedimentary rock)
sedimentary
Sandstone with Vitrinite/Coal inclusions
Arenite with Carbonaceous inclusions
sedimentary
Pumice
Pumice (Vesicular Felsic Igneous Rock)
igneous
Quartzite with Quartz Veins
Metamorphic Quartz-rich Rock (SiO2)
metamorphic
Orange chromium diopside (likely tumbled)
Diopside, CaMgSi₂O₆; orange color may reflect iron-rich composition or surface treatment/inclusion
mineral
Sandstone
Arenite (SiO2 composed primarily of quartz)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Mixed Tumbled Rocks and Minerals Collection
Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)
mineral
Diamond
Diamond (pure Carbon, C)
mineral
Quartz with Schorl (Black Tourmaline)
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Garnet Schist
Almandine-Garnet Schist
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary