Greenschist
Chlorite Schist
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Greenschist
Chlorite Schist
Kaolinite (Chalky Clay)
Kaolinite (Al2Si2O5(OH)4)
Limonite (Iron Ore)
Limonite (mixture of hydrated iron(III) oxide-hydroxides)
Hematite
Iron(III) oxide (Fe2O3)
Script Jasper
Silicon Dioxide (SiO2) with impurities
Quartzite with Iron inclusions
Metamorphosed Sandstone (SiO2 with Fe2O3)
Basalt (with possible weathering or secondary mineral crust)
Basalt (Aphanitic Mafic Igneous Rock)
Limonite (Iron Ore)
Limonite (an FeO(OH)·nH2O mineraloid, not a true mineral due to variable composition)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Green Moonstone (Garnierite)
Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)
Sandstone
Arenite (primarily SiO2)
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Limonite (Ironstone)
Limonite (FeOO·nH2O)
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
Quartz Cluster (Likely Ferruginous)
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Ironstone with Limonite/Goethite coating
Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O)
Quartz-encrusted Matrix
Silicon Dioxide (SiO2) with Ferruginous Sandstone
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite (Iron Ore)
Limonite (̑FeO(OH)·nH₂O)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Limonite (Ironstone)
Hydrous ferric oxides (FeO(OH)·nH2O)
Limonite (Iron Ore)
Limonite; FeO(OH)·nH2O
Vesicular Basalt
Extrusive Mafic Igneous Rock with Vesicular Texture
Sandstone
Arenite (Silicon Dioxide, SiO2 based)
Turquoise in Matrix
Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
Turquoise with Pyrite
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Turquoise (set in silver jewelry)
Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + impurities)
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
Chert Pebble with Quartz Veining
Microcrystalline Quartz (SiO2)
Limonite/Goethite on Shale
Hydrous ferric oxides (FeO(OH)·nH2O) often associated with argillaceous rock
Limonite
Limonite (Hydrated iron oxide mixture, FeO(OH)·nH2O)
Limonite (Iron Ore)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Limonite Geode (Ironstone Concretion)
Limonite [FeO(OH)·nH2O] with possible Quartz or Calcite interior
Sandstone (lithic)
Lithic Wacke / Arenite
Quartz / Quartz Geode fragment
Silicon Dioxide (SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O