Jasper
Silicon Dioxide (SiO2)
sedimentary
Category
Mineral Based Human Made Alloy
Browse mineral based human made alloy specimens identified by the Rock Identifier community.
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Green Fluorite
Calcium Fluoride (CaF2)
mineral
Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Red Sandstone
Arenite (composed primarily of Quartz and Iron Oxide)
sedimentary
Copper Ore (likely Chalcopyrite in Matrix)
Chalcopyrite (CuFeS2)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
sedimentary
Limonite-stained Granite
Felsic Plutonic Rock with Hydrated Iron Oxides
igneous
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Sandstone
Arenite (SiO2 based with various cements)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone (Banded Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)
sedimentary
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
metamorphic
Sandstone with Iron Staining
Arenite (SiO2 based with Fe2O3 staining)
sedimentary
Banded Calcite (Green Onyx)
Calcium Carbonate (CaCO3)
sedimentary
Banded calcite (onyx marble)
Calcite, CaCO₃; commonly sold as “honey onyx” or “Pakistan onyx”
mineral
Mixed rock and mineral collection
Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials
mineral
Conglomerate
Clastic sedimentary rock (Puddingstone)
sedimentary
Sandstone (Weathered)
Arenite (primarily SiO2)
sedimentary
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone Concretion
Sedimentary Concretion (Quartz sandstone with iron oxide cement)
sedimentary
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Green cabochon gemstone pendant, likely turquoise or dyed green turquoise
Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing
gemstone
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Amethyst
Quartz (Silicon Dioxide with iron impurities), SiO2
mineral
Asphalt / Bituminous Aggregate
Bituminous mixture (Hydrocarbon-based sediment)
sedimentary
Sandstone (Red Sandstone)
Arenite (SiO2 based with Fe2O3 staining)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Pearl
Calcium Carbonate (CaCO3) in the form of Aragonite
mineral
Turquoise and Red Coral (with Grizzly Bear Claw)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)
mineral
Jasper Pendant
Chalcedony (Quartz) - SiO2
Mineral/Sedimentary
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
mineral
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Sandstone
Arenite (SiO2 based with quartz grains)
sedimentary