Rock Identifier

Category

Mineral, Possibly Rock Fragment Containing A Mineral

Browse mineral, possibly rock fragment containing a mineral specimens identified by the Rock Identifier community.

Learn about Mineral, Possibly Rock Fragment Containing A Mineral in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Lithic Sandstone

Lithic Sandstone

Glauconite

Dolomite

Gypsum

Hutcheonite

Coal

Sperrylite

Baddeleyite

Anatase

Conglomerate (Conglomerate (Clastic Sedimentary Rock)) — Sedimentary

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

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

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Unknown white fragment (Unknown) — unknown

Unknown white fragment

Unknown

Vesicular Basalt or Porphyritic Rhyolite (Extrusive Igneous Rock) — igneous

Vesicular Basalt or Porphyritic Rhyolite

Extrusive Igneous Rock

Sandstone River Cobble (Arenite (SiO2 based)) — sedimentary

Sandstone River Cobble

Arenite (SiO2 based)

Weathered iron-rich rock, possibly laterite or ironstone (Goethite–hematite-rich ferruginous rock; uncertain without testing) — sedimentary

Weathered iron-rich rock, possibly laterite or ironstone

Goethite–hematite-rich ferruginous rock; uncertain without testing

Banded metamorphic rock, likely gneiss (Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing) — metamorphic

Banded metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing

Sandstone Pebble (Arenite (SiO2 with minor mineral cements)) — sedimentary

Sandstone Pebble

Arenite (SiO2 with minor mineral cements)

Weathered porphyritic pebble (Likely porphyritic volcanic rock, possibly andesite or rhyolite) — igneous

Weathered porphyritic pebble

Likely porphyritic volcanic rock, possibly andesite or rhyolite

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Likely serpentinized ultramafic rock (serpentinite) (Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, possibly with magnetite, chromite, and brucite) — metamorphic

Likely serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, possibly with magnetite, chromite, and brucite

Greywacke (River Slikenside) (Greywacke (Lithic Sandstone)) — sedimentary

Greywacke (River Slikenside)

Greywacke (Lithic Sandstone)

Conglomerate (Conglomerate (Sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock)

Quartz Crystal Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Weathered blue-gray calcite/aragonite fragment (Calcium carbonate (CaCO₃), probably calcite; possibly shell-derived aragonite) — mineral

Weathered blue-gray calcite/aragonite fragment

Calcium carbonate (CaCO₃), probably calcite; possibly shell-derived aragonite

Red Sandstone (Arenite (Fe2O3 rich)) — sedimentary

Red Sandstone

Arenite (Fe2O3 rich)

Weathered limestone or calcitic fossil/reef fragment (Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone) — sedimentary

Weathered limestone or calcitic fossil/reef fragment

Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone

Sandstone (Graywacke) (Arenite / Graywacke (SiO2 with lithic fragments)) — sedimentary

Sandstone (Graywacke)

Arenite / Graywacke (SiO2 with lithic fragments)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (with garnet granules) (Clastic sedimentary rock (primarily SiO2 with Fe3Al2(SiO4)3 inclusions)) — sedimentary

Sandstone (with garnet granules)

Clastic sedimentary rock (primarily SiO2 with Fe3Al2(SiO4)3 inclusions)

Rock Crystal Quartz (Quartz (SiO₂)) — Mineral

Rock Crystal Quartz

Quartz (SiO₂)

Red Sandstone (Arenite with iron oxide (Hematite) cement) — sedimentary

Red Sandstone

Arenite with iron oxide (Hematite) cement

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

Sandstone (River Stone)

Arenite (composed primarily of SiO2)

Sandstone (Weathered Pebble) (Arenite (SiO2 primarily)) — sedimentary

Sandstone (Weathered Pebble)

Arenite (SiO2 primarily)

Unidentified weathered mineral/rock fragment (Indeterminate; likely a weathered iron-rich silicate or sulfide-bearing specimen) — mineral

Unidentified weathered mineral/rock fragment

Indeterminate; likely a weathered iron-rich silicate or sulfide-bearing specimen

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

Sandstone (Siltstone or Fine-grained)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Greywacke) (Arenite / Clastic Sedimentary Rock) — sedimentary

Sandstone (Greywacke)

Arenite / Clastic Sedimentary Rock

Weathered quartz-rich stone, possibly fossiliferous limestone (Indeterminate; likely calcite-rich limestone (CaCO₃) or weathered quartz-bearing rock) — sedimentary

Weathered quartz-rich stone, possibly fossiliferous limestone

Indeterminate; likely calcite-rich limestone (CaCO₃) or weathered quartz-bearing rock

Sandstone (likely Calcareous or Micaceous) (Clastic sedimentary rock (primarily Quartz with Cementing Agents)) — sedimentary

Sandstone (likely Calcareous or Micaceous)

Clastic sedimentary rock (primarily Quartz with Cementing Agents)

Granite with Epidote (Granite, containing quartz, feldspar, and epidote) — Igneous

Granite with Epidote

Granite, containing quartz, feldspar, and epidote

Greenish Metamorphic Rock (likely containing epidote or chlorite) (Metamorphic rock, possibly epidosite or greenstone) — Metamorphic

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

Likely polished garnet fragment (Garnet group, possibly almandine (Fe₃Al₂Si₃O₁₂)) — gemstone

Likely polished garnet fragment

Garnet group, possibly almandine (Fe₃Al₂Si₃O₁₂)

Banded Iron Formation (Fragment) (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation (Fragment)

Banded Iron Formation (BIF)

Conglomerate (Conglomerate (Detrital sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Detrital sedimentary rock)

River Pebble (Weathered Rock Fragment) — sedimentary

River Pebble

Weathered Rock Fragment

Granite or granitic rock fragment (Felsic intrusive igneous rock, typically quartz + feldspar + mica; exact species uncertain from the image) — igneous

Granite or granitic rock fragment

Felsic intrusive igneous rock, typically quartz + feldspar + mica; exact species uncertain from the image

Sandstone (Graywacke type) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (Graywacke type)

Clastic Sedimentary Rock (Lithic Sandstone)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Basalt Porphyry (Porphyritic Basalt) — igneous

Basalt Porphyry

Porphyritic Basalt

Sandstone (Banded Sandstone) (Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Banded Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)