Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
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.
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone (Greywacke)
Arenite / Clastic Sedimentary Rock
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Carnelian
Carnelian (SiO2 - Silicon Dioxide with Hematite impurities)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Rose Quartz
Silicon Dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Moqui Marbles
Iron Oxide Concretion (Hematite/Goethite)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)
Igneous
Quartzite Pebble (River Rock)
Metamorphic Quartzite (predominantly SiO2)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Bauxite (Concretionary)
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Magnetite
Magnetite (Fe3O4)
Mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone with Bedding Planes
Arenite (Sedimentary rock composed primarily of sand-sized minerals)
sedimentary
Barite (Desert Rose or Cockscomb variety)
Barium Sulfate (BaSO4)
mineral
Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)
Diorite (Igneous rock, intrusive, intermediate composition)
Igneous Rock
Greywacke (River Pebble)
Greywacke sandstone with quartz veining
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary