Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Category
Mineral (Synthetic)
Browse mineral (synthetic) specimens identified by the Rock Identifier community.
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Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2) in a Geode
sedimentary
Satin Spar (often sold as Selenite)
Gypsum (CaSO4·2H2O)
mineral
Satin Spar (Satin Spar Selenite)
Gypsum (CaSO4·2H2O)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Milky Quartz with Iron Staining and Matrix
Silicon Dioxide (SiO2)
mineral
Pegmatite (with Quartz and Feldspar)
Granitic Pegmatite
igneous
Milky Quartz (Water-Worn Pebble)
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Clear Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Agate
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Rhodolite Garnet
Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)
mineral
Sandstone
Arenite (composed mainly of SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Sandstone (with Siltstone/Greywacke variations)
Sedimentary Rock (Clastic)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Eagle Eye / Grey Tiger Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Amber
Succinite (fossilized tree resin), C10H16O
Organic Gemstone
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Breccia
Breccia (Clastic Sedimentary Rock)
sedimentary
Basalt
Basalt (Mafic volcanic rock)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Basalt
Extrusive mafic volcanic rock
igneous
Granite
Phaneritic Igneous Rock (Granite)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Granite
Phaneritic Igneous Rock (Granite)
igneous