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.

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

Sandstone (likely Quartzose)

Arenite (primarily SiO2)

Greyling Sandstone / Greywacke (Lithic Wacke (SiO2 + diverse mineral fragments)) — sedimentary

Greyling Sandstone / Greywacke

Lithic Wacke (SiO2 + diverse mineral fragments)

Shale or Siltstone (Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)) — sedimentary

Shale or Siltstone

Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)

Conglomerate (Clastic sedimentary rock (Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Conglomerate)

Sandstone (with Iron Siderite Concretion) (Arenite with Ironstone Concretion (FeCO3)) — sedimentary

Sandstone (with Iron Siderite Concretion)

Arenite with Ironstone Concretion (FeCO3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Marble (Recrystallized Carbonate Rock (CaCO3)) — metamorphic

Marble

Recrystallized Carbonate Rock (CaCO3)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Quartz (with inclusions / Sandstone fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (with inclusions / Sandstone fragment)

Silicon Dioxide (SiO2)

Sandstone (with potential trace fossils) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with potential trace fossils)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Calcareous or Ferruginous) (Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)) — sedimentary

Sandstone (Calcareous or Ferruginous)

Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)

Olivine (Peridot when gem-quality) (Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)) — mineral

Olivine (Peridot when gem-quality)

Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)

Ironstone (with possible Hematite/Limonite coating) (Ironstone (Fe-rich sedimentary rock)) — sedimentary

Ironstone (with possible Hematite/Limonite coating)

Ironstone (Fe-rich sedimentary rock)

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Ferruginous Sandstone (with Iron Oxide staining) (Clastic Sedimentary Rock - Quartz Arenite/Wacke) — sedimentary

Ferruginous Sandstone (with Iron Oxide staining)

Clastic Sedimentary Rock - Quartz Arenite/Wacke

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone with Quartz Vein (Arenite with SiO2 intrusion) — sedimentary

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (SiO2 based)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Chalcedony (Agate/Blue Quartzite) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate/Blue Quartzite)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

Red Sandstone (Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)) — sedimentary

Red Sandstone

Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Limonite Concretion (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (FeO(OH)·nH2O)

Schist (specifically Chlorite/Greenschist) (Chlorite Schist) — metamorphic

Schist (specifically Chlorite/Greenschist)

Chlorite Schist

Ferruginous Conglomerate (or Iron-Rich Concrete/Slag) (Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)) — sedimentary

Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)

Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)

Pink Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Sandstone Concretion (Ferruginous Sandstone Concretion) — sedimentary

Sandstone Concretion

Ferruginous Sandstone Concretion

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Ferruginous) (Arenite (SiO2 with Fe2O3 inclusions)) — sedimentary

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

Chalcedony (Chalcedony (a microcrystalline variety of Quartz, SiO2)) — Mineral

Chalcedony

Chalcedony (a microcrystalline variety of Quartz, SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

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

Sandstone

Arenite (composed primarily of SiO2)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Red Sandstone (Ferruginous Sandstone (SiO2 dominated with Fe2O3 cement)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 dominated with Fe2O3 cement)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Sandstone (Red) (Arenite (Fe2O3 heavy)) — sedimentary

Sandstone (Red)

Arenite (Fe2O3 heavy)

Gneiss (specifically a Granitic Gneiss) (Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)) — metamorphic

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Sandstone (Quartzose) (Arenite (Siliciclastic sedimentary rock)) — sedimentary

Sandstone (Quartzose)

Arenite (Siliciclastic sedimentary rock)

Red Sandstone (Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)