Rock Identifier

Category

Man Made Object (Metal Alloy)

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

Learn about Man Made Object (Metal Alloy) in the encyclopedia

Opalite

Copper

Goldstone

Blue Goldstone

Zincite

Lherzolite

Bixbyite

Gondite

Strawberry Obsidian

Dunite

Chert (Iron-Stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-Stained)

Microcrystalline Quartz (SiO2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Magnetite Ore (Magnetite (Fe3O4)) — mineral

Magnetite Ore

Magnetite (Fe3O4)

Sandstone (Ferruginous) (Sandstone (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Ferruginous)

Sandstone (SiO2 with iron oxide impurities)

Magnetite Nodule (Magnetite (Fe3O4)) — mineral

Magnetite Nodule

Magnetite (Fe3O4)

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Rose quartz beads (Quartz, silicon dioxide (SiO₂), pink variety) — mineral

Rose quartz beads

Quartz, silicon dioxide (SiO₂), pink variety

Polished turquoise (Turquoise — hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O) — gemstone

Polished turquoise

Turquoise — hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Rose Quartz (Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese

Moqui Marble (Sandstone Concretion) (Hematite-cemented Sandstone (Fe2O3 + SiO2)) — sedimentary

Moqui Marble (Sandstone Concretion)

Hematite-cemented Sandstone (Fe2O3 + SiO2)

Basalt River Pebble (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Tiger Iron (Banded Iron Formation (BIF)) — sedimentary

Tiger Iron

Banded Iron Formation (BIF)

Iron Ore (Limonite and Hematite) (Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)) — mineral

Iron Ore (Limonite and Hematite)

Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Carnelian (Carnelian (a variety of Chalcedony, SiO2)) — Mineral

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Schist (Schist (Crystalline metamorphic rock)) — metamorphic

Schist

Schist (Crystalline metamorphic rock)

Bornite (peacock ore), likely with chalcopyrite (Bornite, Cu5FeS4; associated copper sulfides may include chalcopyrite, CuFeS2) — mineral

Bornite (peacock ore), likely with chalcopyrite

Bornite, Cu5FeS4; associated copper sulfides may include chalcopyrite, CuFeS2

Native Gold (in Jewelry) (Gold (Au)) — mineral

Native Gold (in Jewelry)

Gold (Au)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Brown Jasper (Silicon Dioxide (SiO2)) — sedimentary

Brown Jasper

Silicon Dioxide (SiO2)

Fossil coral (likely colonial/tabulate coral) (Fossilized scleractinian or tabulate coral; calcium carbonate, chiefly CaCO₃ (calcite/aragonite replaced by calcite)) — fossil

Fossil coral (likely colonial/tabulate coral)

Fossilized scleractinian or tabulate coral; calcium carbonate, chiefly CaCO₃ (calcite/aragonite replaced by calcite)

Quartz-rich metamorphic rock, likely mica schist (Mica schist; chiefly quartz (SiO₂) with biotite/muscovite mica and possible feldspar) — metamorphic

Quartz-rich metamorphic rock, likely mica schist

Mica schist; chiefly quartz (SiO₂) with biotite/muscovite mica and possible feldspar

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Black-and-white jasper (Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions) — metamorphic

Black-and-white jasper

Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions

Serpentine (likely serpentinized ultramafic rock) (Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; commonly derived from peridotite) — metamorphic

Serpentine (likely serpentinized ultramafic rock)

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; commonly derived from peridotite

Limonite (Iron Ore) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Yellow Jade (often Serpentine or Dolomite) (Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.) — Mineral, often a rock given its aggregate nature

Yellow Jade (often Serpentine or Dolomite)

Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.

Mineral, often a rock given its aggregate nature

Polished/tumbled jasper (Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities) — mineral

Polished/tumbled jasper

Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral impurities

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Hematite-rich Ironstone (Ferruginous Rock (Fe2O3)) — sedimentary

Hematite-rich Ironstone

Ferruginous Rock (Fe2O3)

Basalt (River Stone) (Extrusive mafic igneous rock) — igneous

Basalt (River Stone)

Extrusive mafic igneous rock

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.) (Mixed Silicates and Sulfides (SiO2, FeS2)) — mineral

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)

Mixed Silicates and Sulfides (SiO2, FeS2)

Hematite (Iron Ore) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (Iron Ore)

Iron(III) oxide (Fe2O3)

Rhodonite (Rhodonite (MnSiO3)) — mineral

Rhodonite

Rhodonite (MnSiO3)

Lazulite (Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2) — mineral

Lazulite

Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2

Likely obsidian (possibly tektite or slag glass) (Volcanic glass; primarily SiO₂, noncrystalline) — igneous

Likely obsidian (possibly tektite or slag glass)

Volcanic glass; primarily SiO₂, noncrystalline