Rock Identifier

Category

Mineral, Often Found As Detrital Grains In Sedimentary Rocks

Browse mineral, often found as detrital grains in sedimentary rocks specimens identified by the Rock Identifier community.

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Greenschist (Greenstone) (Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

Banded Sandstone (Liesegang Rings) (Sedimentary sandstone with Iron oxide precipitates) — sedimentary

Banded Sandstone (Liesegang Rings)

Sedimentary sandstone with Iron oxide precipitates

Pink Granite (Phaneritic intrusive felsic igneous rock) — igneous

Pink Granite

Phaneritic intrusive felsic igneous rock

Chalcedony (Cryptocrystalline Quartz (SiO2)) — Mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Basalt (Basalt (a mafic extrusive igneous rock)) — Igneous

Basalt

Basalt (a mafic extrusive igneous rock)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

Chert (with Fossiliferous Silicification) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (with Fossiliferous Silicification)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Dendrite (Manganese Oxide Dendrites) (Psilomelane or Pyrolusite on Matrix (typically MnO2)) — mineral

Dendrite (Manganese Oxide Dendrites)

Psilomelane or Pyrolusite on Matrix (typically MnO2)

Chert (Chert (microcrystalline quartz, SiO2)) — sedimentary

Chert

Chert (microcrystalline quartz, SiO2)

Rough Quartz (Milky Quartz Pebbles) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (Milky Quartz Pebbles)

Silicon Dioxide (SiO2)

Yellow Quartzite (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite

Quartzite (primarily SiO2)

Agate (Moss or Banded Agate variety) (Agate (Silicon Dioxide - SiO2)) — mineral

Agate (Moss or Banded Agate variety)

Agate (Silicon Dioxide - SiO2)

Banded Agate (Agatized Geode Slice) (Silicon Dioxide (SiO₂)) — mineral

Banded Agate (Agatized Geode Slice)

Silicon Dioxide (SiO₂)

Fancy Jasper (Silicon Dioxide (SiO2) with impurities) — mineral

Fancy Jasper

Silicon Dioxide (SiO2) with impurities

Quartzite (Iron-stained) (Quartzite (SiO2 with Fe-oxides)) — metamorphic

Quartzite (Iron-stained)

Quartzite (SiO2 with Fe-oxides)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Greenstone (Greenschist) — metamorphic

Greenstone

Greenschist

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Carnelian (Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)) — mineral

Carnelian

Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)

Quartzite with Quartz Vein (Metamorphosed sandstone (SiO2)) — metamorphic

Quartzite with Quartz Vein

Metamorphosed sandstone (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Magnetite (Lodestone) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone)

Magnetite (Fe3O4)

Quartzite (Water-worn Pebble) (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite (Water-worn Pebble)

Metamorphosed Quartz Sandstone (SiO2)

Yellow Quartzite (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite

Quartzite (primarily SiO2)

Siltstone with flute casts or scratch marks (Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)) — sedimentary

Siltstone with flute casts or scratch marks

Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)

Quartzite Breccia (Brecciated Quartzite (SiO2)) — metamorphic

Quartzite Breccia

Brecciated Quartzite (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

Hematite (Iron(III) oxide (Fe2O3)) — Mineral

Hematite

Iron(III) oxide (Fe2O3)

Quartz (likely Jasper or Chert variety) (Quartz (SiO₂)) — Mineral

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Chert with Asphaltum (or Tar) (Silica (SiO2) with natural Bitumen/Asphaltum) — sedimentary

Chert with Asphaltum (or Tar)

Silica (SiO2) with natural Bitumen/Asphaltum

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Rough Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Rough Precious Opal

Hydrated Silica (SiO2·nH2O)

Fossiliferous Shale (Laminated Mudrock with plant fossils) — sedimentary

Fossiliferous Shale

Laminated Mudrock with plant fossils

Basalt Porphyry (Porphyritic Basalt) — igneous

Basalt Porphyry

Porphyritic Basalt

Sandstone (with potentially metamorphic or basaltic bands) (Arenite / Lithic Wacke) — sedimentary

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Pebble (Likely Basalt or Siltstone) (Clastic sedimentary rock or mafic volcanic rock) — Igneous or Sedimentary

Pebble (Likely Basalt or Siltstone)

Clastic sedimentary rock or mafic volcanic rock

Igneous or Sedimentary