Limonite (Iron-rich Siltstone / Sandstone base)
Hydrous ferric oxide mixture (FeO(OH)·nH2O)
sedimentary
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.
Carnelian
Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)
mineral
Barite
Barium Sulfate (BaSO4)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
metamorphic
Grey Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pegmatite (with smoky quartz and tourmaline/biotite)
Pegmatitic Granite
igneous
River Stone / Siltstone
Siltstone (composed of lithified silt)
sedimentary
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Mineral
Banded Iron Formation
Banded Iron Formation (BIF)
Sedimentary Rock
Schist/Phyllite
Metamorphic Schist (Chlorite Schist variety)
metamorphic
Pink Granite
Granite (Alkali-feldspar granite)
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Banded Gneiss
Gneiss (pronounced 'nice')
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Pyrite in Shale
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
mineral
Chert (Jasper/Ironstone variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Granite
Granite (Felsic intrusive igneous rock)
igneous
Sandstone
Arenite (SiO2 principal)
sedimentary
Banded River Rock / Gneiss (highly weathered)
Gneiss
Metamorphic rock
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Glauconitic Sandstone (Greensand)
Glauconitic quartz wacke or arenite
sedimentary
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Galena
Lead Sulfide (PbS)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic