Hand-Drawn Trading Card (Amateur Artwork)
Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)
Organic/Synthetic Composite (Paper and Pigment)
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Red cabochon gemstone, likely carnelian or red agate
Cryptocrystalline quartz (chalcedony), SiO₂
gemstone
Sandstone
Arenite (primarily SiO2)
sedimentary
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
metamorphic
Sandstone
Arenite (Sandstone)
sedimentary
Unakite
Altered granite (Epidotized granite)
metamorphic
Mixed polished gemstone bead bracelet, likely ocean jasper, agate, and quartz varieties
Mostly microcrystalline quartz (SiO₂), with possible chalcedony, jasper, and minor feldspar or other inclusions
gemstone
Bauxite
Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Unakite
Unakite (Altered Granite composed of Orthoclase KAlSi3O8, Epidote Ca2(Al, Fe)3(SiO4)3(OH), and Quartz SiO2)
metamorphic
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Sandstone (Banded)
Clastic Sedimentary Rock (composed of SiO2, CaCO3, or Fe2O3 cement)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Graphite-rich schist (probable graphite flake)
Graphite (C) in graphitic schist; possibly graphite-bearing phyllite
metamorphic
Banded Sandstone (Differential Weathering)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
sedimentary
Muscovite Mica Schist
Metamorphic Rock (Muscovite-Biotite Schist)
metamorphic
Chakra Stone (Composite / Man-made Bonded Gemstones)
Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)
Combined Minerals / Metaphysical stones
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Anthracite
Anthracite coal
metamorphic
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Ruby in Zoisite
Anyolite (composite of Corundum Al2O3 and Zoisite Ca2Al3(SiO4)(Si2O7)O(OH))
metamorphic
Sandstone (likely Quartzite-rich)
Arenite (primarily SiO2)
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar-Mica composite)
igneous
Limonite (Iron Ore)
Hydrated ferric oxide mixture (FeO(OH)·nH2O)
sedimentary
Epidote-bearing Rock / Epidote Inclusion
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) in host rock
mineral
Carved turquoise arrowhead/pendant
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Shale
Shale (claystone/mudstone)
sedimentary
Small tumbled blue-green stone, possibly chrysocolla or turquoise
Indeterminate copper-bearing mineral; possible chrysocolla (Cu₂H₂Si₂O₅(OH)₄·nH₂O) or turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O)
mineral
Amber Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone (Pebble)
Sandstone (SiO2 dominated clastic sedimentary rock)
sedimentary
Anthracite Coal
Anthracite (Carbon-rich metamorphic sedimentary rock)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Unakite
Epidotized Granite
metamorphic
Bumblebee Jasper
Calcite with Arsenic and Manganese oxides (technically a volcanic rock)
igneous
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Kaolinite (China Clay)
Kaolinite (Al2Si2O5(OH)4)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral