Pyrite
Iron Sulfide (FeS2)
mineral
Category
Organic (Sedimentary Context)
Browse organic (sedimentary context) specimens identified by the Rock Identifier community.
Rhodonite with Manganese Oxides
Rhodonite (Mn,Fe,Mg,Ca)SiO3
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite in Matrix (likely Quartz or Coal)
Iron Sulfide (FeS2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
White Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Marble (White)
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
mineral
Chert (Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
sedimentary
Red Jasper (Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Banded Calcite (variety Honey Calcite / Chocolate Calcite)
Calcium Carbonate (CaCO3)
mineral
Galena
Lead Sulfide (PbS)
mineral
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Red Jasper
Jasper (Silicon Dioxide) - SiO2
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Magnetite (likely with weathered Limonite/Hematite)
Magnetite (Fe3O4) with iron oxide weathering
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Chert
Microcrystalline silica (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Red Jasper
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Mineral
Pyrite
Iron Disulfide (FeS2)
mineral