Rock Identifier

Category

Not A Rock Or Mineral (Anthropogenic Material)

Browse not a rock or mineral (anthropogenic material) specimens identified by the Rock Identifier community.

Learn about Not A Rock Or Mineral (Anthropogenic Material) in the encyclopedia

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Halite

Dolomite

Gypsum

Coal

Peat

Dunite

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Sandstone (Quartz-rich) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartz-rich)

Arenite (primarily SiO2)

Sandstone (with Iron Oxidation) (Arenite (SiO2 with Fe-oxides)) — sedimentary

Sandstone (with Iron Oxidation)

Arenite (SiO2 with Fe-oxides)

Sandstone (Ferruginous) (Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)

Blue Obsidian (Cullet Glass) (Silicon Dioxide (Amorphous Glass)) — mineral

Blue Obsidian (Cullet Glass)

Silicon Dioxide (Amorphous Glass)

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (composed mostly of SiO2)

Polished brecciated jasper (likely) (Brecciated jasper, an opaque microcrystalline quartz (SiO₂) with contrasting silica-rich fragments and matrix) — mineral

Polished brecciated jasper (likely)

Brecciated jasper, an opaque microcrystalline quartz (SiO₂) with contrasting silica-rich fragments and matrix

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Sandstone (Sandstone (SiO2-rich framework with variable matrix)) — sedimentary

Sandstone

Sandstone (SiO2-rich framework with variable matrix)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Siltstone or Fine-grained) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Siltstone or Fine-grained)

Clastic sedimentary rock (primarily SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Sandstone (clastic sedimentary rock)) — Rock

Sandstone

Sandstone (clastic sedimentary rock)

Likely dark mineral or rock fragment (Indeterminate from image; possibly a dark silicate mineral such as hornblende, biotite, or basalt) — mineral

Likely dark mineral or rock fragment

Indeterminate from image; possibly a dark silicate mineral such as hornblende, biotite, or basalt

Sandstone (Sandstone (SiO2 predominant)) — sedimentary

Sandstone

Sandstone (SiO2 predominant)

Quartz crystal beads (Quartz (silicon dioxide, SiO₂)) — mineral

Quartz crystal beads

Quartz (silicon dioxide, SiO₂)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — mineral

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz with impurities or Host Rock (SiO2 (Silicon Dioxide) with mixed silicates) — mineral

Quartz with impurities or Host Rock

SiO2 (Silicon Dioxide) with mixed silicates

Sandstone (Clastic sedimentary rock composed mainly of quartz sand) — sedimentary

Sandstone

Clastic sedimentary rock composed mainly of quartz sand

Tumbled brecciated jasper (likely) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide-rich zones) — mineral

Tumbled brecciated jasper (likely)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide-rich zones

Limonite (Iron Ore) (FeO(OH)·nH2O) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O

Likely weathered quartz-rich stone or fossil fragment (Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil) — mineral

Likely weathered quartz-rich stone or fossil fragment

Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil

Unidentified gravel and stone fragments (Mixed, indeterminate lithologies; likely quartz, feldspar, and weathered silicate rock fragments) — sedimentary

Unidentified gravel and stone fragments

Mixed, indeterminate lithologies; likely quartz, feldspar, and weathered silicate rock fragments

Amethyst quartz geode (Quartz, SiO₂; purple coloration from irradiation and trace iron) — mineral

Amethyst quartz geode

Quartz, SiO₂; purple coloration from irradiation and trace iron

Milky Quartz / Chalcedony (Silicon Dioxide (SiO2)) — mineral

Milky Quartz / Chalcedony

Silicon Dioxide (SiO2)

Likely weathered metallic mineral or slag fragment (Indeterminate; possibly iron-rich sulfide/oxide material or industrial slag) — mineral

Likely weathered metallic mineral or slag fragment

Indeterminate; possibly iron-rich sulfide/oxide material or industrial slag

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Tektite (Impactite (Natural Silicate Glass)) — meteorite

Tektite

Impactite (Natural Silicate Glass)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Granite (Granite; primarily quartz, feldspar, and mica) — igneous

Granite

Granite; primarily quartz, feldspar, and mica

Milky Quartz (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Polished brecciated jasper (likely yellow-and-white jasper) (Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the image) — gemstone

Polished brecciated jasper (likely yellow-and-white jasper)

Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the image

Likely silicon carbide (carborundum) (Synthetic silicon carbide (SiC), likely blue-green crystalline grit) — mineral

Likely silicon carbide (carborundum)

Synthetic silicon carbide (SiC), likely blue-green crystalline grit

Quartz Vein in River Siltstone (Crystalline Quartz (SiO2) in Siliclastic Matrix) — sedimentary

Quartz Vein in River Siltstone

Crystalline Quartz (SiO2) in Siliclastic Matrix

Raw Calcite (Calcium Carbonate (CaCO3)) — mineral

Raw Calcite

Calcium Carbonate (CaCO3)

Black-and-white spotted jasper (likely dalmatian jasper), polished beads (Commercially called Dalmatian jasper; typically a feldspar-rich rock with dark inclusions, not true jasper (microcrystalline quartz). Exact composition cannot be confirmed from the image.) — mineral

Black-and-white spotted jasper (likely dalmatian jasper), polished beads

Commercially called Dalmatian jasper; typically a feldspar-rich rock with dark inclusions, not true jasper (microcrystalline quartz). Exact composition cannot be confirmed from the image.