Goethite/Hematite Nodule
Goethite (FeO(OH)) and Hematite (Fe2O3)
mineral
Category
Mineral, Often Found In Sedimentary Deposits
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
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Sandstone (Quartzose)
Arenite (predominantly SiO2)
sedimentary
Sedimentary rock with quartz veining
Laminated siltstone or mudstone with hydrothermal quartz veins
sedimentary
Fossil Coral
Phylum Cnidaria / Rugosa or Tabulata
fossil
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Magnetite (potentially Lodestone)
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Pyrite
Iron Pyrite (FeS2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
mineral
Pebble with Basaltic and Quartz-rich Banding
Polymictic Lithic Pebble
sedimentary
Quartz (Chalcedony/Agate nodule)
Silicon dioxide (SiO2)
mineral
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
mineral
Jasper with Iron Oxides
Silicon Dioxide (SiO2) with Fe2O3 inclusions
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
Mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Aragonite (Flos Ferri)
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Golden Calcite
Calcium Carbonate (CaCO3)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Riverstone (Sandstone or Quartzite)
Sedimentary Rock (likely Arenite)
sedimentary
Agatized or Silicified Fossil/Coral, or Jasper
SiO2
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Shark Tooth Fossil
Chondrichthyes (shark) tooth
fossil
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
White Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Sandstone
Arenite (lithic or quartz sandstone)
sedimentary
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2) with Iron Oxide impurities
mineral
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
sedimentary
Gold Nugget
Native Gold (Au)
mineral