Rock Identifier

Category

Mineral Based Composite

Browse mineral based composite specimens identified by the Rock Identifier community.

Granite Pegmatite (Coarse-grained Granite (SiO2 - Aluminum and Alkalies)) — igneous

Granite Pegmatite

Coarse-grained Granite (SiO2 - Aluminum and Alkalies)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Tree Agate (or Moss Agate), faceted into a crystal tower (Dendritic Agate (Silicon Dioxide, SiO2)) — Mineral

Tree Agate (or Moss Agate), faceted into a crystal tower

Dendritic Agate (Silicon Dioxide, SiO2)

Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Schist

Schist (Crystalline metamorphic rock)

Stilbite (Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)) — mineral

Stilbite

Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Native Gold (in the form of jewelry) (Gold (Au)) — mineral

Native Gold (in the form of jewelry)

Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sodium Polyacrylate (Superabsorbent Polymer) (Sodium Polyacrylate [-CH2-CH(COONa)-]n) — mineral (synthetic)

Sodium Polyacrylate (Superabsorbent Polymer)

Sodium Polyacrylate [-CH2-CH(COONa)-]n

mineral (synthetic)

Emerald in Host Rock (Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium) — mineral

Emerald in Host Rock

Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium

Iolite (Cordierite) (Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18) — Mineral

Iolite (Cordierite)

Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18

Granite (Phaneritic Plutonic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)) — igneous

Granite

Phaneritic Plutonic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)

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

Sandstone Geode (Unbroken) (Siliciclastic sedimentary rock (primarily Quartz)) — sedimentary

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Desert Rose (Selenite Rose (Gypsum: CaSO4·2H2O)) — mineral

Desert Rose

Selenite Rose (Gypsum: CaSO4·2H2O)

River Pebbles (Sandstone and Quartzite) (SiO2 (Quartz) dominated clastic rocks) — sedimentary and metamorphic

River Pebbles (Sandstone and Quartzite)

SiO2 (Quartz) dominated clastic rocks

sedimentary and metamorphic

Slickenside (Tectonic Fault Scarp Surface) — metamorphic

Slickenside

Tectonic Fault Scarp Surface

Basalt (Basalt) — Igneous

Basalt

Basalt

Yellow Jasper (Chalcedony (SiO2) with iron oxide inclusions) — mineral

Yellow Jasper

Chalcedony (SiO2) with iron oxide inclusions

Bumble Bee Jasper (Calcite-bearing Volcanic Tuff (not a true Jasper)) — sedimentary

Bumble Bee Jasper

Calcite-bearing Volcanic Tuff (not a true Jasper)

Sandstone Cobble (Arenite (Secondary classification based on grain size)) — sedimentary

Sandstone Cobble

Arenite (Secondary classification based on grain size)

Blue Aventurine (Silicon Dioxide (SiO2) with inclusions of Dumortierite) — Mineral (silicate variety)

Blue Aventurine

Silicon Dioxide (SiO2) with inclusions of Dumortierite

Mineral (silicate variety)

Tumbled Carnelian and Quartz Mix (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Tumbled Carnelian and Quartz Mix

Silicon Dioxide (SiO2) with iron oxide impurities

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Silver (Jewelry Specimen) (Native Silver (Chemical Formula: Ag)) — mineral

Silver (Jewelry Specimen)

Native Silver (Chemical Formula: Ag)

River Stone (Quartzite/Siltstone mixture) (Silicon Dioxide (SiO2) based metamorphosed sandstone) — metamorphic or sedimentary

River Stone (Quartzite/Siltstone mixture)

Silicon Dioxide (SiO2) based metamorphosed sandstone

metamorphic or sedimentary

Sandstone (likely Graywacke or Lithic Sandstone) (Arenite / Wacke (SiO2 based with lithic fragments)) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Arenite / Wacke (SiO2 based with lithic fragments)

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

Rough Topaz (Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]) — mineral

Rough Topaz

Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]

Sunstone (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — Mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Citrine (Citrine (Silicon Dioxide - SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide - SiO2)

Basaltic Tuff / Volcanic Breccia (Pyroclastic Breccia / Lithic Tuff) — igneous

Basaltic Tuff / Volcanic Breccia

Pyroclastic Breccia / Lithic Tuff

Quartz (Common or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common or Milky)

Silicon Dioxide (SiO2)