Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Category
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
Limonite (with Pyrite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
Honey Calcite
Calcium Carbonate (CaCO3)
Quartz Geode or Druzy Quartz in Host Rock
Silicon Dioxide (SiO2)
Turquoise (possible Dyed Magnesite/Howlite)
CuAl6(PO4)4(OH)8·4H2O
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Pink Calcite (Mangano Calcite)
Calcium Carbonate (CaCO3)
Chert / Jasper
Silicon Dioxide (SiO2)
Selenite (Gypsum)
Hydrous calcium sulfate (CaSO4·2H2O)
Celestite (Celestine)
Celestine (SrSO4)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Amber
Succinite (Resinite)
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Limonite
Hydrous Iron Oxide (often Goethite FeO(OH), Lepidocrocite γ-FeO(OH), and other amorphous iron oxyhydroxides)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Glauconitic Sandstone (Greensand pebble)
Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
Travertine
Travertine (form of massive calcium carbonate, CaCO3)
Zircon
Zircon (Zirconium Silicate, ZrSiO4)
Ironstone Concretion (Desert Varnish / Hematite-Goethite Nodule)
Iron oxide / hydroxide deposit (predominantly Fe2O3 and FeO(OH))
Riverstone Jasper (Chert variant)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Sandstone / Chert Pebble
Silicon Dioxide / Sedimentary Rock (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Ironstone / Gossan with Quartz Inclusions
Limonite / Goethite rich Sandstone / Gossan
Magnetite
Magnetite (Fe3O4)
Galena
Lead(II) sulfide (PbS)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Turquoise (Rough)
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Banded Calcite (often commercially sold as Mexican Onyx or Green Onyx)
Calcium Carbonate (CaCO3)
Chert (often called Flint when found in chalk)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Fossilized Bone
Petrified Bone / Biogenic Sedimentary
Limonite (Ironstone Concretion)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Banded Chert
Microcrystalline Quartz (SiO2)
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
Orange Calcite (often commercially sold as Honey Calcite or Aragonite)
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Chert (Flint)
Microcrystalline Quartz (SiO2)