Barite Rose on Marcasite
Barium Sulfate (BaSO4) on Iron Sulfide (FeS2)
mineral
Category
Mineral (Sedimentary Context)
Browse mineral (sedimentary context) specimens identified by the Rock Identifier community.
Learn about Mineral (Sedimentary Context) in the encyclopedia
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Quartz Geode
Silicon Dioxide (SiO2) in Geode form
mineral
Pyrite (on Shale/Matrix)
Iron Disulfide (FeS2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in Calcareous or Siliceous Matrix
mineral
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
sedimentary
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Geode
Quartz / Chalcedony nodule
sedimentary
Ironstone (likely Limonite or Goethite nodule)
Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)
sedimentary
Limonite with Hematite
Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Glauconite (Greensand)
Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
sedimentary
Siltstone / Slate
Siltstone / Low-grade Slate
sedimentary
Agate
Silicon Dioxide (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
metamorphic
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Brown Sandstone
Arenite (primarily Quartz and Feldspar, with Iron Oxide cement)
sedimentary
Limonite / Ironstone
Hydrated Iron Oxide (FeO(OH)·nH2O)
mineral
Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Banded Sandstone
Clastic Sedimentary Rock (Quartz Arenite)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Epidote with Quartz
Ca2(Al,Fe)3(SiO4)3(OH) (Epidote) / SiO2 (Quartz)
mineral
Sandstone
Quartzose Sandstone / Lithic Sandstone
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Hematite Nodule
Hematite (Alpha Fe2O3)
mineral
Limonite Geode Fragment
Hydrated ferric oxide mixture (FeO(OH)nH2O)
mineral
Geode
Silicon dioxide (Quartz/Chalcedony) concretion
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite (Yellow Ochre)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Limonite (Iron Stone Concretion)
Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O
mineral
Hematite
Hematite (Fe2O3)
mineral