Asphalt aggregate pavement
Bituminous asphalt concrete containing crushed stone aggregate
Category
Browse mineral composite specimens identified by the Rock Identifier community.
Asphalt aggregate pavement
Bituminous asphalt concrete containing crushed stone aggregate
Iron Slag
Anthropogenic Iron oxide/Silicate composite
Turquoise cabochon (likely stabilized or imitation)
Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
Polished multicolored stone bead bracelet
Likely dyed or treated agate/jasper, chiefly microcrystalline quartz (SiO₂)
Polished tiger iron
Tiger iron: banded quartz (SiO₂), red jasper, and crocidolite-derived fibrous iron oxides
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Tumbled turquoise cabochon
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly stabilized or dyed material
Polished malachite
Malachite (Cu₂CO₃(OH)₂), a hydrated copper carbonate hydroxide
Polished malachite slab
Malachite, Cu₂CO₃(OH)₂; likely polished and possibly resin-stabilized
Polished chrysocolla-matrix stone (probable)
Chrysocolla, hydrated copper aluminosilicate; likely mixed with quartz, turquoise, or copper minerals
Turquoise cabochon ring
Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
Polished chrysocolla cabochon
Chrysocolla, a hydrated copper phyllosilicate; commonly intergrown with quartz, malachite, or other copper minerals
Agate (Dyed) or composite stone
SiO2
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
Turquoise cabochon
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; likely stabilized or matrix-bearing
Decorative orb of likely sodalite-bearing rock or dyed stone
Most consistent with sodalite-rich nepheline syenite or a blue-and-white composite; exact identification requires testing
Pearl
Nacre (aragonite, CaCO₃, with conchiolin)
Wood Paneling
Engineered Wood / Plywood Paneling
Turquoise cabochon jewelry
Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
Opal ring (likely precious opal)
Hydrated amorphous silica, SiO₂·nH₂O; the pictured stone may be natural opal or a lab-created/imitation opal
Unakite
Unakite Epidosite (composite of Epidote, Orthoclase, and Quartz)
Graphite
Graphite (elemental carbon, C)
Malachite cabochon or polished bead
Malachite, Cu₂CO₃(OH)₂
Turquoise (likely stabilized or composite)
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
Fossil crocodilian skull and jaws
Crocodyliform fossil; exact genus and species cannot be determined from the image
Moon (lunar surface depiction)
Lunar rock; chiefly anorthosite, basalt, and breccia (plagioclase-rich CaAl2Si2O8)
Chrysocolla in Jasper / Green Jasper
Cu2-xAlx(H2-x)Si2O5(OH)4·nH2O in SiO2 matrix
Polished turquoise (likely stabilized)
Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
Note: This is a Man-Made Object (Costume/Prop Patch)
Synthetic fiber and pigments (Cellulose/Plastic-based composite)
Polished turquoise matrix beads
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, with host-rock matrix; exact identification is uncertain from the image
Cultured pearls
Pearl; predominantly aragonite (CaCO₃) in nacre with organic conchiolin
Ruby in Fuchsite (Composite/Stabilized)
Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
Polished/tumbled stone, likely serpentine or agate
Probable serpentine-group mineral (antigorite/lizardite), possibly a green jasper or agate; image is insufficient for certainty
Blue-green copper mineral specimen, likely chrysocolla-bearing rock
Chrysocolla, hydrated copper silicate: approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; possibly mixed with quartz or turquoise
Quartz-rich gravel fragment
Quartz (silicon dioxide, SiO₂), possibly with feldspar or carbonate inclusions
Dalmatian Jasper
Microcrystalline quartz feldspar composite with arfvedsonite or black tourmaline
Unakite
Epidotized Granite
Unakite
Altered granite (Epidote, Orthoclase Feldspar, and Quartz)
Polished turquoise-bearing rock
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a brown host rock or matrix