Moonstone
Orthoclase Feldspar (KAlSi3O8)
Mineral
Category
Synthetic Polymer (Polylactic Acid)
Browse synthetic polymer (polylactic acid) specimens identified by the Rock Identifier community.
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Limestone
Calcium Carbonate (CaCO3)
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Zebra Marble
Recrystallized Calcite (CaCO3) with Carbonaceous Impurities
metamorphic
Banded Calcite (often marketed as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Granite
Phaneritic intrusive igneous rock
igneous
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Turquoise in Matrix
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Black Onyx
Cryptocrystalline Quartz (SiO2 with organic/iron impurities)
mineral
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Pink Granite
Phaneritic Quartz-Feldspar Plutonic Rock
igneous
Amber (Baltic)
Succinith (Fossilized Tree Resin)
mineraloid
Quartzite
Quartzite (SiO2)
metamorphic
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with tarnish
mineral
Granite
Plutonic felsic igneous rock
igneous
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Granite Pebble (Weathered)
Phaneritic Felsic Igneous Rock
igneous
Banded Onyx (Cave Calcite)
Calcite (CaCO3), often called Mexican Onyx or Travertine
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
mineral side rock
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Pyrite-rich Gossan
Iron Sulfide (FeS2) in Ore Matrix
mineral
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral