Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Category
Sedimentary Or Mineral
Browse sedimentary or mineral specimens identified by the Rock Identifier community.
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Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
mineral
Yellow Ochre / Limonite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Stream-Rounded Shale or Mudstone
Argillaceous sedimentary rock
sedimentary
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Banded Sandstone (River Pebble)
Clastic Sedimentary Rock (SiO2 with impurities)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pyrite-rich Ore
Pyrite (FeS2) with secondary minerals
mineral
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Chalcedony (Agate / Moss Agate)
Silicon Dioxide (SiO2)
mineral
Raw Calcite
Calcite (Calcium Carbonate - CaCO3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Geode (Unopened)
Silica-rich Concretion (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (often marketed as Selenite)
Gypsum (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral