Rock Identifier

Category

Mineral, Part Of A Rock

Browse mineral, part of a rock specimens identified by the Rock Identifier community.

Sandstone (with manganese staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (likely Greywacke or Siltstone variety) (Arenite / Siltstone (primarily SiO2)) — sedimentary

Sandstone (likely Greywacke or Siltstone variety)

Arenite / Siltstone (primarily SiO2)

Sandstone (with Feldspathic/Arkose qualities) (Arenite (primarily SiO2 with KAlSi3O8 components)) — sedimentary

Sandstone (with Feldspathic/Arkose qualities)

Arenite (primarily SiO2 with KAlSi3O8 components)

Sandstone with Iron Oxide (Arenite (SiO2 with Fe2O3 staining)) — sedimentary

Sandstone with Iron Oxide

Arenite (SiO2 with Fe2O3 staining)

Sandstone (Quartz-rich) (Sandstone (SiO2 dominated)) — sedimentary

Sandstone (Quartz-rich)

Sandstone (SiO2 dominated)

Sandstone (Ferruginous) (Arenite (Fe-rich SiO2)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (with potential mineral inclusions) (Clastic sedimentary rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with potential mineral inclusions)

Clastic sedimentary rock (primarily Quartz, SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Sandstone (with banding/weathering) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (with banding/weathering)

Clastic Sedimentary Rock (primarily SiO2)

Travertine (Travertine (CaCO3 - Calcium Carbonate)) — sedimentary

Travertine

Travertine (CaCO3 - Calcium Carbonate)

Sandstone Pebble (Arenite (primarily SiO2)) — sedimentary

Sandstone Pebble

Arenite (primarily SiO2)

Sandstone (with ripple marks) (Arenite / Quartz Sandstone) — sedimentary

Sandstone (with ripple marks)

Arenite / Quartz Sandstone

Flagstone (Sandstone) (Clastic Sedimentary Rock (composed of quartz and feldspar)) — sedimentary

Flagstone (Sandstone)

Clastic Sedimentary Rock (composed of quartz and feldspar)

River Quartz Pitting/Cobble (Silicon Dioxide (SiO2)) — mineral

River Quartz Pitting/Cobble

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O) — Mineral

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Quartz pebble with surface markings (Silicon Dioxide (SiO2)) — mineral

Quartz pebble with surface markings

Silicon Dioxide (SiO2)

Chalcedony (Common Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Quartz / Common Agate (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Agate

Silicon Dioxide (SiO2)

Basalt with Calcite Veining (Aphanitic Mafic Igneous Rock (Basalt) with CaCO3) — igneous

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (Basalt) with CaCO3

Amygdaloidal Basalt (Amygdaloidal Basalt) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt

Biotite Mica (K(Mg,Fe)3AlSi3O10(OH)2) — Mineral in a matrix (likely quartz or feldspar)

Biotite Mica

K(Mg,Fe)3AlSi3O10(OH)2

Mineral in a matrix (likely quartz or feldspar)

Serpentinite (Serpentinite (composed primarily of minerals in the Serpentine group)) — metamorphic

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Milky Quartz Pebble (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble (Iron-Stained)

Silicon Dioxide (SiO2)

River Cobble (Basaltic/Andesitic) (Mafic Igneous Porphyritic Rock) — igneous

River Cobble (Basaltic/Andesitic)

Mafic Igneous Porphyritic Rock

Massive Quartz (Silicon Dioxide (SiO2)) — mineral

Massive Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Shale (Lutaceous Sedimentary Rock) — sedimentary

Shale

Lutaceous Sedimentary Rock

Chrysocolla in Jasper (Chryso-Jasper) (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)) — mineral

Chrysocolla in Jasper (Chryso-Jasper)

Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)

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

Sandstone (specifically Flagstone)

Arenite (primarily composed of SiO2)

Dalmatian Stone (Dalmatian Jasper (Aplitic Rock)) — igneous

Dalmatian Stone

Dalmatian Jasper (Aplitic Rock)

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

Quartz (Smoky/Milky Variety)

Silicon Dioxide (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Eye Agate (Silicon Dioxide (SiO2) - Banded Chalcedony) — mineral

Eye Agate

Silicon Dioxide (SiO2) - Banded Chalcedony

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

Bull Quartz

Quartz (Silicon Dioxide - SiO2)

Granitic Gneiss (Gneiss (containing Potassium Feldspar and Quartz)) — metamorphic

Granitic Gneiss

Gneiss (containing Potassium Feldspar and Quartz)

Amethyst (Amethyst (Silicon Dioxide - SiO2 with iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2 with iron impurities)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, Chrysotile)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, Chrysotile)

Vesicular Basalt (Vesicular Basalt (rich in silicate minerals mostly Plagioclase and Pyroxene)) — igneous

Vesicular Basalt

Vesicular Basalt (rich in silicate minerals mostly Plagioclase and Pyroxene)