Rock Identifier

Category

Man Made Object (Metalwork)

Browse man made object (metalwork) specimens identified by the Rock Identifier community.

Learn about Man Made Object (Metalwork) in the encyclopedia

Opalite

Map Jasper

Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Marl

Coquina

Dunite

Dalmatian Jasper

Dalmatian Jasper

Rock Gypsum

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

Granite (Pegmatitic) (Phaneritic Felsic Igneous Rock) — igneous

Granite (Pegmatitic)

Phaneritic Felsic Igneous Rock

Red Jasper (Silicon Dioxide (SiO2 with Hematite inclusions)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2 with Hematite inclusions)

Faceted Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — gemstone

Faceted Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Clear Calcite

Calcite (Calcium Carbonate, CaCO3)

Chert (specifically Yellow Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Yellow Jasper variety)

Silicon Dioxide (SiO2)

Limonite Concretion (Goethite-Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Goethite-Limonite (FeO(OH)·nH2O)

Spondylus Oyster Calcification / Fossilized Oyster (Spondylus (Thorny Oyster) / Calcium Carbonate (CaCO3)) — sedimentary

Spondylus Oyster Calcification / Fossilized Oyster

Spondylus (Thorny Oyster) / Calcium Carbonate (CaCO3)

White Jade (Nephrite) (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

White Jade (Nephrite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Bismuth Crystal (Bismuth (Bi)) — mineral

Bismuth Crystal

Bismuth (Bi)

Lapis lazuli and green-blue chalcedony jewelry (Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)) — gemstone

Lapis lazuli and green-blue chalcedony jewelry

Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)

Unakite-like granite (Altered granite, chiefly quartz, feldspar, mica, and red garnet) — igneous

Unakite-like granite

Altered granite, chiefly quartz, feldspar, mica, and red garnet

Pink-and-green quartz-rich rock, likely rose quartz with epidote/serpentine (Quartz (SiO₂), variably colored by iron, with possible epidote, chlorite, or serpentine inclusions) — mineral

Pink-and-green quartz-rich rock, likely rose quartz with epidote/serpentine

Quartz (SiO₂), variably colored by iron, with possible epidote, chlorite, or serpentine inclusions

Rose Quartz (Silicon Dioxide (Quartz), SiO2) — mineral

Rose Quartz

Silicon Dioxide (Quartz), SiO2

Pink Granite (Phaneritic Felsic Intrusive Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Granite (Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)) — igneous

Granite

Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)

Sandstone (Pebble) (Sandstone (arenite, arkose, wacke depending on composition)) — sedimentary

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Fossilized oyster shell (Bivalvia; likely an oyster (Ostreidae), partly mineralized with calcite) — fossil

Fossilized oyster shell

Bivalvia; likely an oyster (Ostreidae), partly mineralized with calcite

Crinoid Fossil in Limestone (Crinoid columnal (Class Crinoidea) in biomicrite) — fossil

Crinoid Fossil in Limestone

Crinoid columnal (Class Crinoidea) in biomicrite

River Pebbles (Chert and Quartzite) (Sedimentary Clastic Rock (Silica-rich)) — sedimentary

River Pebbles (Chert and Quartzite)

Sedimentary Clastic Rock (Silica-rich)

Jasper Marble (Silicon Dioxide (SiO2) with Impurities) — sedimentary

Jasper Marble

Silicon Dioxide (SiO2) with Impurities

Tumbled brown stone, likely jasper or chert (Microcrystalline quartz (SiO₂), probably iron-stained jasper/chert) — mineral

Tumbled brown stone, likely jasper or chert

Microcrystalline quartz (SiO₂), probably iron-stained jasper/chert

Tumbled quartz pebble, likely iron-stained quartz or citrine (Quartz (SiO₂), possibly ferruginous quartz or pale citrine) — mineral

Tumbled quartz pebble, likely iron-stained quartz or citrine

Quartz (SiO₂), possibly ferruginous quartz or pale citrine

Botryoidal iron-rich jasper (Ferruginous jasper/chalcedony, primarily microcrystalline quartz (SiO₂) with iron oxides and hydroxides) — mineral

Botryoidal iron-rich jasper

Ferruginous jasper/chalcedony, primarily microcrystalline quartz (SiO₂) with iron oxides and hydroxides

Labradorite (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — mineral

Labradorite

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

Yellow Jasper (Silicon Dioxide (SiO2) with impurities, microcrystalline quartz) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with impurities, microcrystalline quartz

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Carnelian (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Petrified Wood (Silicified wood (Quartz / Chalcedonized wood, SiO2)) — sedimentary

Petrified Wood

Silicified wood (Quartz / Chalcedonized wood, SiO2)

Malachite and Cuprite on Host Rock (Cu2CO3(OH)2 (Malachite) and Cu2O (Cuprite)) — mineral

Malachite and Cuprite on Host Rock

Cu2CO3(OH)2 (Malachite) and Cu2O (Cuprite)

Leopard Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Leopard Jasper

Microcrystalline Quartz (SiO2)

Clear Quartz (Cut/Faceted Gemstone) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Cut/Faceted Gemstone)

Silicon Dioxide (SiO2)

Blue Tiger's Eye (Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2)) — gemstone

Blue Tiger's Eye (Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Green Aventurine (Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2) — mineral

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Chalcedony (likely agate/chert variety) (Microcrystalline quartz, SiO₂) — mineral

Chalcedony (likely agate/chert variety)

Microcrystalline quartz, SiO₂

Tumbled jasper (likely picture jasper or iron-rich jasper) (Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides) — sedimentary

Tumbled jasper (likely picture jasper or iron-rich jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides

Polished tiger’s-eye cabochon (probable) (Quartz variety, SiO₂, with fibrous riebeckite/crocidolite-derived inclusions) — metamorphic

Polished tiger’s-eye cabochon (probable)

Quartz variety, SiO₂, with fibrous riebeckite/crocidolite-derived inclusions

Tumbled amethyst (Quartz, purple variety — SiO₂, colored mainly by iron impurities and irradiation) — gemstone

Tumbled amethyst

Quartz, purple variety — SiO₂, colored mainly by iron impurities and irradiation

Polished black stone, likely black obsidian (Obsidian (volcanic glass; mainly SiO₂)) — igneous

Polished black stone, likely black obsidian

Obsidian (volcanic glass; mainly SiO₂)