Pyrite
Iron Disulfide (FeS2)
mineral
Category
Organic (Sedimentary Context)
Browse organic (sedimentary context) specimens identified by the Rock Identifier community.
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Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Marble (White)
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
mineral
Fossil Shell
Phylum Mollusca (Bivalvia or Brachiopoda)
fossil
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper (Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
sedimentary
Epidote (Unakite component) / Green Quartzite
Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Galena
Lead Sulfide (PbS)
mineral
Marble
Metamorphosed Limestone (CaCO3)
metamorphic
Auriferous Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Banded Calcite (variety Honey Calcite / Chocolate Calcite)
Calcium Carbonate (CaCO3)
mineral
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Bivalve Seashell Fossil
Class Bivalvia
fossil
Chert
Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Chert or Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Chert (Flint Gravel)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Quartz-veined Metamorphic Pebble
Silicate-rich metamorphic rock with quartz veins (SiO2)
metamorphic
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral