Rock Identifier

Category

Mineral (Sedimentary Context)

Browse mineral (sedimentary context) specimens identified by the Rock Identifier community.

Yellow Jasper (within host rock) (Silicon Dioxide (SiO2) with iron hydroxides (Goethite)) — sedimentary

Yellow Jasper (within host rock)

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Quartz Geode (Crystalline Silicon Dioxide (SiO2) within a nodule) — sedimentary

Quartz Geode

Crystalline Silicon Dioxide (SiO2) within a nodule

Limonite Concretion (Goethite-rich Concretion (FeO(OH))) — sedimentary

Limonite Concretion

Goethite-rich Concretion (FeO(OH))

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Selenite (Satin Spar) (Gypsum (CaSO4·2H2O)) — mineral

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Satin Spar Selenite (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar Selenite

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Dalmation Stone (Dalmation Jasper) (Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)) — igneous

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Botryoidal Hematite (Iron Stone Conglomerate) (Hematite (Fe2O3) in sedimentary matrix) — sedimentary

Botryoidal Hematite (Iron Stone Conglomerate)

Hematite (Fe2O3) in sedimentary matrix

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Geode (unopened) or Calcareous Nodule (Siliceous or Calcareous Concretion/Nodule) — sedimentary

Geode (unopened) or Calcareous Nodule

Siliceous or Calcareous Concretion/Nodule

Geode (Unopened) (Silica-rich Concretion (primarily SiO2)) — sedimentary

Geode (Unopened)

Silica-rich Concretion (primarily SiO2)

Ironstone Concretion (Iron-rich Mudstone) (Siderite / Geothite concretion (FeCO3 / FeO(OH))) — sedimentary

Ironstone Concretion (Iron-rich Mudstone)

Siderite / Geothite concretion (FeCO3 / FeO(OH))

Halite (Halite (NaCl)) — mineral

Halite

Halite (NaCl)

Chalcedony on Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Ferruginous Sandstone (Arenite with Iron-Oxide cement (Fe2O3 · nH2O)) — sedimentary

Ferruginous Sandstone

Arenite with Iron-Oxide cement (Fe2O3 · nH2O)

Specular Hematite (Iron Oxide (Fe2O3)) — mineral

Specular Hematite

Iron Oxide (Fe2O3)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Fluorite (Blue) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Blue)

Calcium Fluoride (CaF2)

Honeycomb Calcite (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Honeycomb Calcite

Calcite (Calcium Carbonate, CaCO3)

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

Limonite Concretion

Limonite (FeO(OH)·nH2O)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Ironstone Concretion (Limonite/Goethite) (Ironstone (primarily FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Limonite/Goethite)

Ironstone (primarily FeO(OH)·nH2O)

Ironstone Concretion (Moqui Marble type) (Ferruginous Concretion (Fe2O3 / FeO(OH))) — sedimentary

Ironstone Concretion (Moqui Marble type)

Ferruginous Concretion (Fe2O3 / FeO(OH))

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)