Rock Identifier

Category

Mineral (Native Element Alloy)

Browse mineral (native element alloy) specimens identified by the Rock Identifier community.

Learn about Mineral (Native Element Alloy) in the encyclopedia

Sulfur

Copper

Gold

Platinum

Silver

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Agate (Thunderegg segment) (Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony) — mineral

Agate (Thunderegg segment)

Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony

Rose quartz (likely) (Quartz, silicon dioxide (SiO₂), commonly massive rather than visibly crystalline) — mineral

Rose quartz (likely)

Quartz, silicon dioxide (SiO₂), commonly massive rather than visibly crystalline

Tumbled amethyst (Amethyst, purple quartz (SiO₂)) — gemstone

Tumbled amethyst

Amethyst, purple quartz (SiO₂)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise (Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing) — gemstone

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Quartz-rich iron-stained nodule (Microcrystalline quartz (SiO₂), possibly chalcedony with limonite/goethite staining) — mineral

Quartz-rich iron-stained nodule

Microcrystalline quartz (SiO₂), possibly chalcedony with limonite/goethite staining

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Extrusive volcanic rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Quartz-rich pegmatite, possibly with mica and feldspar (Granitic pegmatite; mainly quartz (SiO₂), feldspar, and biotite/muscovite mica) — igneous

Quartz-rich pegmatite, possibly with mica and feldspar

Granitic pegmatite; mainly quartz (SiO₂), feldspar, and biotite/muscovite mica

Gold Ore (Gold-bearing Quartz (Native Gold, Au)) — mineral

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

Sulfur on Aragonite (Sulfur (S) on Aragonite (CaCO3)) — mineral

Sulfur on Aragonite

Sulfur (S) on Aragonite (CaCO3)

Chondrite Meteorite (Ordinary Chondrite (Fe-Ni alloy, Olivine, Pyroxene)) — Mineral

Chondrite Meteorite

Ordinary Chondrite (Fe-Ni alloy, Olivine, Pyroxene)

Jasper (Silicon dioxide (SiO2) with iron impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron impurities

Basalt (Worn Cobble / Artifact) (Aphanitic Extrusive Igneous Rock) — igneous

Basalt (Worn Cobble / Artifact)

Aphanitic Extrusive Igneous Rock

Black Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Extrusive)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Psilomelane (Manganese Ore) (Psilomelane (Ba,H2O)2Mn5O10) — mineral

Psilomelane (Manganese Ore)

Psilomelane (Ba,H2O)2Mn5O10

Auriferous Quartz or Pyritic Ore (Iron Pyrite (FeS2) or Native Gold (Au) in Matrix) — mineral

Auriferous Quartz or Pyritic Ore

Iron Pyrite (FeS2) or Native Gold (Au) in Matrix

Gold-bearing quartz or iron-stained quartzite (Quartz (SiO₂), possibly with pyrite or native gold inclusions) — mineral

Gold-bearing quartz or iron-stained quartzite

Quartz (SiO₂), possibly with pyrite or native gold inclusions

Yellow iron-oxide-rich mineral/rock fragment (Likely limonite/goethite (hydrated iron oxides; commonly approximated as FeO(OH)·nH₂O)) — mineral

Yellow iron-oxide-rich mineral/rock fragment

Likely limonite/goethite (hydrated iron oxides; commonly approximated as FeO(OH)·nH₂O)

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Quartz Vein in Granite Pebble (Granitic rock with Quartz (SiO2) vein intrusion) — igneous

Quartz Vein in Granite Pebble

Granitic rock with Quartz (SiO2) vein intrusion

Chert / Flint (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert / Flint

Chert (Microcrystalline Quartz, SiO2)

Graphite (Graphite (Native Carbon), Formula: C) — Metamorphic

Graphite

Graphite (Native Carbon), Formula: C

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Malachite-bearing rock (Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla or matrix minerals) — mineral

Malachite-bearing rock

Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla or matrix minerals

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide impurities), formula: SiO2) — mineral

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), formula: SiO2

Likely native metallic mineral specimen (Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore) — mineral

Likely native metallic mineral specimen

Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore

Obsidian (Obsidian (principally SiO2 - Silicon Dioxide)) — igneous

Obsidian

Obsidian (principally SiO2 - Silicon Dioxide)

Snowflake Obsidian (Volcanic Glass with Spherulite Inclusions (primarily SiO2)) — igneous

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (primarily SiO2)

Amygdaloidal Basalt with Epidote (Amygdaloidal Basalt (Mafic volcanic rock)) — igneous

Amygdaloidal Basalt with Epidote

Amygdaloidal Basalt (Mafic volcanic rock)

Turquoise (Hydrate phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrate phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Copper Ore (likely Chalcopyrite in Matrix) (Chalcopyrite (CuFeS2)) — mineral

Copper Ore (likely Chalcopyrite in Matrix)

Chalcopyrite (CuFeS2)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2 with iron oxide inclusions) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2 with iron oxide inclusions

Likely raw chalcopyrite or bornite specimen (Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)) — mineral

Likely raw chalcopyrite or bornite specimen

Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)

Likely chalcopyrite-bearing sulfide ore (Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite) — mineral

Likely chalcopyrite-bearing sulfide ore

Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite

Quartz Vein Pebble (Silicon dioxide (SiO2)) — metamorphic

Quartz Vein Pebble

Silicon dioxide (SiO2)

Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)