Rock Identifier

Category

Anthropogenic (Man Made Product Subject To Geological Processes)

Browse anthropogenic (man made product subject to geological processes) specimens identified by the Rock Identifier community.

Learn about Anthropogenic (Man Made Product Subject To Geological Processes) in the encyclopedia

Zincite

Quartz (Smoky/Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Diamond (Native Carbon (C)) — gemstone

Diamond

Native Carbon (C)

Shale (Mudrock / Fissile Shale) — sedimentary

Shale

Mudrock / Fissile Shale

Anthracite (Anthracite Coal (Carbon)) — sedimentary

Anthracite

Anthracite Coal (Carbon)

Limestone (with Chert) (Calcium Carbonate (CaCO3) / Microcrystalline Quartz (SiO2)) — sedimentary

Limestone (with Chert)

Calcium Carbonate (CaCO3) / Microcrystalline Quartz (SiO2)

Milky Quartz with Hematite/Limonite staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Hematite/Limonite staining

Silicon Dioxide (SiO2)

Yellow Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Blue Sapphire (Corundum (Al2O3)) — gemstone

Blue Sapphire

Corundum (Al2O3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

ABS Plastic (Acrylonitrile Butadiene Styrene) ((C8H8)x·(C4H6)y·(C3H3N)z) — Synthetic Polymer (Synthetic Material)

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Synthetic Polymer (Synthetic Material)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Fossiliferous Limestone (Calcium Carbonate (CaCO3) with Biogenic Fragments) — sedimentary

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Fragments

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pale green translucent mineral fragment (Indeterminate; possibly fluorite, calcite, or glassy quartz) — mineral

Pale green translucent mineral fragment

Indeterminate; possibly fluorite, calcite, or glassy quartz

Amygdaloidal Basalt (Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Basalt with Weathering Crust (Extrusive mafic volcanic rock) — igneous

Basalt with Weathering Crust

Extrusive mafic volcanic rock

Sea Glass (Silicon dioxide (mostly)) — mineral

Sea Glass

Silicon dioxide (mostly)

Calcite-rich limestone (Limestone, predominantly calcite (CaCO₃), possibly recrystallized) — sedimentary

Calcite-rich limestone

Limestone, predominantly calcite (CaCO₃), possibly recrystallized

Pyrite-rich Gossan (Iron Sulfide (FeS2) in Ore Matrix) — mineral

Pyrite-rich Gossan

Iron Sulfide (FeS2) in Ore Matrix

Coal (Bituminous / Anthracite) (Organic Sedimentary Rock (Carbonaceous Rock)) — sedimentary

Coal (Bituminous / Anthracite)

Organic Sedimentary Rock (Carbonaceous Rock)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Petrified Wood (Silicified wood, primarily composed of Quartz (SiO2)) — Mineral, often found in sedimentary deposits

Petrified Wood

Silicified wood, primarily composed of Quartz (SiO2)

Mineral, often found in sedimentary deposits

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

Clear Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Basalt with Quartz Vein (Basaltic rock with hydrothermal SiO2 filling) — igneous

Basalt with Quartz Vein

Basaltic rock with hydrothermal SiO2 filling

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz nodule (River pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz nodule (River pebble)

Silicon Dioxide (SiO2)

Sulfur (Sulfur (S8)) — mineral

Sulfur

Sulfur (S8)

Rhodonite (Manganese Silicate (Mn, Fe, Mg, Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn, Fe, Mg, Ca)SiO3

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Quartz-bearing conglomeratic rock with orange feldspar/calcite inclusion (Probably porphyritic granite or granitic pegmatite; exact identification requires a thin section or tests) — igneous

Quartz-bearing conglomeratic rock with orange feldspar/calcite inclusion

Probably porphyritic granite or granitic pegmatite; exact identification requires a thin section or tests

Quartz-rich granite or pegmatitic rock (Granite/pegmatite; chiefly quartz (SiO₂), feldspar, and minor mica) — igneous

Quartz-rich granite or pegmatitic rock

Granite/pegmatite; chiefly quartz (SiO₂), feldspar, and minor mica

Banded Iron Formation (BIF) (Banded Iron Formation (Magnetite/Hematite-Chert)) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation (Magnetite/Hematite-Chert)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)