Rock Identifier

Category

Mineraloid (Man Made)

Browse mineraloid (man made) specimens identified by the Rock Identifier community.

Learn about Mineraloid (Man Made) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Lherzolite

Gondite

Dunite

Granite (Granite (composed primarily of silica-rich minerals like quartz and feldspar)) — igneous

Granite

Granite (composed primarily of silica-rich minerals like quartz and feldspar)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

Greisen (Greisen) — Metamorphic

Greisen

Greisen

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Granite (Felsic Plutonic Rock) — igneous

Granite

Felsic Plutonic Rock

Granite (Felsic Intrusive Igneous Rock) — igneous

Granite

Felsic Intrusive Igneous Rock

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Granite Pebble (Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)) — igneous

Granite Pebble

Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)

Olivine in Basalt matrix (Peridotite (Mg, Fe)2SiO4) — igneous

Olivine in Basalt matrix

Peridotite (Mg, Fe)2SiO4

Brown Sandstone Pebble (Clastic Sandstone (SiO2 with iron oxides)) — sedimentary

Brown Sandstone Pebble

Clastic Sandstone (SiO2 with iron oxides)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Milky Quartz Pebble (Crystalline Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Granite (Felsic Plutonic Rock (Granite)) — igneous

Granite

Felsic Plutonic Rock (Granite)

Chert (Quartz Variety) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Quartz Variety)

Chert (Silicon Dioxide, SiO2)

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

Chert (Flint)

Microcrystalline Silica (SiO2)

Coarse-grained mica-bearing metamorphic rock, likely schist (Mica schist, probably muscovite–biotite schist with quartz and feldspar) — metamorphic

Coarse-grained mica-bearing metamorphic rock, likely schist

Mica schist, probably muscovite–biotite schist with quartz and feldspar

Dark fine-grained rock, likely basalt (Basalt; chiefly plagioclase feldspar and pyroxene, commonly with olivine and iron oxides) — igneous

Dark fine-grained rock, likely basalt

Basalt; chiefly plagioclase feldspar and pyroxene, commonly with olivine and iron oxides

Black basalt fragment (Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine) — igneous

Black basalt fragment

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine

Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Ca5(PO4)3(F,Cl,OH)

Limestone Gravel (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone Gravel

Sedimentary Calcium Carbonate (CaCO3)

Granite (Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)) — igneous

Granite

Phaneritic plutonic rock (Quartz-Alkali Feldspar-Plagioclase)

Granite (Felsic Plutonic Rock (primarily SiO2)) — igneous

Granite

Felsic Plutonic Rock (primarily SiO2)

Granite (Phaneritic plutonic rock (Quartz + Feldspar + Mica)) — igneous

Granite

Phaneritic plutonic rock (Quartz + Feldspar + Mica)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, Mica)

Vesicular volcanic rock, possibly weathered basalt or scoria (Basaltic scoria/vesicular basalt; predominantly plagioclase, pyroxene, and iron-titanium oxides) — igneous

Vesicular volcanic rock, possibly weathered basalt or scoria

Basaltic scoria/vesicular basalt; predominantly plagioclase, pyroxene, and iron-titanium oxides

Rounded basalt pebble (Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with minor olivine or magnetite) — igneous

Rounded basalt pebble

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with minor olivine or magnetite

Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

Granite (Phaneritic plutonic rock (SiO2-rich)) — igneous

Granite

Phaneritic plutonic rock (SiO2-rich)

Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Granite (Phaneritic Quartz-Feldspar Plutonic Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Limestone with Fossil Inclusion (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Fossil Inclusion

Sedimentary Calcium Carbonate (CaCO3)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Quartz (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Turquoise (Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)) — Mineral

Turquoise

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)

Polished white chalcedony or milky quartz pebble (Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion) — mineral

Polished white chalcedony or milky quartz pebble

Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion

Dark igneous rock, likely basalt (Basalt; chiefly plagioclase feldspar, pyroxene, and possibly olivine) — igneous

Dark igneous rock, likely basalt

Basalt; chiefly plagioclase feldspar, pyroxene, and possibly olivine

Pink Granite (River Pebble) (Felsic intrusive igneous rock (consisting of Quartz, Orthoclase Feldspar, and Plagioclase)) — igneous

Pink Granite (River Pebble)

Felsic intrusive igneous rock (consisting of Quartz, Orthoclase Feldspar, and Plagioclase)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)