Sandstone with Ironstone Concretion
Arenite with Ferruginous Cement
sedimentary
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Conglomerate
Conglomerate
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Satin Spar (Gypsum)
Hydrous calcium sulfate (CaSO4·2H2O)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
sedimentary
Quartz Heart or Arrowhead Shape
Silicon Dioxide (SiO2)
mineral
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Dalmatian Stone
Peralkaline rhyolite
igneous
Turquoise (likely stabilized or simulated Howlite)
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Limonite with Hematite
Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)
mineral
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Limonite Concretion
Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O
sedimentary
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
igneous
Sedimentary Sandstone (Sandstone Slab)
Arenite (SiO2 with Fe2O3 staining)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron Oxide inclusions)
metamorphic
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and organic impurities
sedimentary
Sandstone with Manganese Oxide Patina
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
sedimentary
Sandstone (Quartz-rich)
Arenite
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Man-made object (coin)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Limestone with Calcite Veins
Calcium Carbonate (CaCO3)
sedimentary
Aqua Aura Quartz
Silicon Dioxide (SiO2) bonded with Gold (Au)
mineral (treated)
Quartz pebble
Silicon dioxide (SiO2)
Mineral
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) on Sedimentary Host Rock
mineral
Chert (Flint)
Chert (SiO2)
sedimentary
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary