Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Synthetic Zinc/Polycarbonate Composite (Bey-specimen) (Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay) — Anthropogenic Mineral Mimic

Synthetic Zinc/Polycarbonate Composite (Bey-specimen)

Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay

Anthropogenic Mineral Mimic

Basalt (Basalt) — Igneous

Basalt

Basalt

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

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

Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron) (Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)) — igneous

Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron)

Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)

Granite (Granite (a plutonic igneous rock)) — Igneous

Granite

Granite (a plutonic igneous rock)

Terrazzo (Synthetic Composite Rock) (Cementitious or Epoxy Resin-bound Aggregates) — Man-made metamorphic-style composite

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Man-made metamorphic-style composite

Brick (Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)) — Man-made material (constructed)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Man-made material (constructed)

Cultured Marble (Synthetic) (Polymer-matrix composite (typically calcium carbonate in polyester resin)) — Synthetic / Composite Material

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Synthetic / Composite Material

Asphalt (Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)) — Sedimentary

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Man-made Synthetic Material (Plastic/Composite) (Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)) — Non-geological / Synthetic

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Non-geological / Synthetic

Concrete with Aggregate (Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)) — anthropogenic (human-made) sedimentary-like material

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

anthropogenic (human-made) sedimentary-like material

Concrete / Anthropogenic Conglomerate (Man-made composite material (Portland cement, aggregate, and water)) — not a natural rock

Concrete / Anthropogenic Conglomerate

Man-made composite material (Portland cement, aggregate, and water)

not a natural rock

Basalt (Basalt (extrusive igneous rock)) — Igneous

Basalt

Basalt (extrusive igneous rock)

Tiger Iron (Tiger Iron (Hematite, Red Jasper, and Chert/Tiger's Eye composite)) — metamorphic

Tiger Iron

Tiger Iron (Hematite, Red Jasper, and Chert/Tiger's Eye composite)

Engineered Quartz Stone (Agglomerated Quartz (SiO2 + Polymer Resin)) — mineral-based composite

Engineered Quartz Stone

Agglomerated Quartz (SiO2 + Polymer Resin)

mineral-based composite

Banded Gneiss (Gneiss (pronounced 'nice')) — metamorphic

Banded Gneiss

Gneiss (pronounced 'nice')

Geode with Quartz and possibly Jasper/Hematite (Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides) — Mineral/Sedimentary Geode

Geode with Quartz and possibly Jasper/Hematite

Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides

Mineral/Sedimentary Geode

Asphalt (Bituminous Concrete) (Bituminous mix / Anthropogenic conglomerate) — man-made composite (lithified equivalent of sedimentary)

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

man-made composite (lithified equivalent of sedimentary)

Quartz (Engineered Stone Countertop) (Silicon Dioxide (SiO2) with polymer resins) — Sedimentary-like (Industrial Composite)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Sedimentary-like (Industrial Composite)

Hand-Drawn Trading Card (Amateur Artwork) (Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)) — Organic/Synthetic Composite (Paper and Pigment)

Hand-Drawn Trading Card (Amateur Artwork)

Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)

Organic/Synthetic Composite (Paper and Pigment)

Dalmatian Stone (Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)) — igneous

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Orange Calcite (likely polished specimen) (Calcite) — Mineral

Orange Calcite (likely polished specimen)

Calcite

Bauxite (Bauxite (principal ore of aluminum, primarily Al(OH)3)) — sedimentary

Bauxite

Bauxite (principal ore of aluminum, primarily Al(OH)3)

Epidote (Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

Lapis Lazuli (Tumbled Specimen) (Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Bauxite (Bauxite (Al2O3·nH2O)) — sedimentary

Bauxite

Bauxite (Al2O3·nH2O)

Banded Gneiss (River Rock/Pebble) (Gneiss (specifically a banded variety often found as a river rock)) — Metamorphic Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Red Sandstone (Ferruginous Sandstone (SiO2 dominated with Fe2O3 cement)) — sedimentary

Red Sandstone

Ferruginous Sandstone (SiO2 dominated with Fe2O3 cement)

Sandstone (Sandstone (composed primarily of sand-sized minerals or rock grains)) — sedimentary

Sandstone

Sandstone (composed primarily of sand-sized minerals or rock grains)

Bauxite (AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)) — sedimentary

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Lapis Lazuli (Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Lapis Lazuli (Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Epidote (Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)) — mineral

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Not a geological specimen (N/A (man-made object)) — N/A

Not a geological specimen

N/A (man-made object)

Bauxite (Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))

Synthetic Resin (Artificial Specimen) (Polyurethane or Polyester Resin) — mineraloid (man-made)

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

mineraloid (man-made)

Basalt with Secondary Mineralization (Likely Zeolites or Calcite) (Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)) — igneous

Basalt with Secondary Mineralization (Likely Zeolites or Calcite)

Aphanitic mafic volcanic rock with secondary mineral inclusions (e.g., CaAl2Si3O10·3H2O for Scolecite)