Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Learn about Mineral Composite in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Sea Sediment Jasper

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Sandstone (Graywacke type) (Clastic Sedimentary Rock (Lithic Sandstone)) — sedimentary

Sandstone (Graywacke type)

Clastic Sedimentary Rock (Lithic Sandstone)

Red Sandstone (Arenite (primarily SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Arenite (primarily SiO2 with Fe2O3)

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

Turquoise

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

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Pyrite on Quartz (Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)) — mineral

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Limonite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Red Sandstone Pebble (Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)) — sedimentary

Red Sandstone Pebble

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Galena (Lead sulfide (PbS)) — mineral

Galena

Lead sulfide (PbS)

Vesicular Basalt with Pyrite (Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions) — igneous

Vesicular Basalt with Pyrite

Basalt (MgFe2+)(Si,Al)2O6 containing FeS2 inclusions

Leopard Jasper (Microcrystalline Quartz (SiO2) with mineral inclusions) — sedimentary

Leopard Jasper

Microcrystalline Quartz (SiO2) with mineral inclusions

Blue Lace Agate (Cryptocrystalline Quartz (SiO2) with trace minerals) — mineral

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Dalmatian Jasper (Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)) — igneous

Dalmatian Jasper

Dalmatian Stone (not a true Jasper, primarily a Perthitic Feldspar with Arfvedsonite)

Gossan (Iron-rich regolith (mainly Limonite and Goethite, FeO(OH)·nH2O)) — sedimentary

Gossan

Iron-rich regolith (mainly Limonite and Goethite, FeO(OH)·nH2O)

Granite / Arkosic Sandstone (Coarse Igneous or Sedimentary Aggregate) (Granite / Quartz-Feldspar Aggregate) — igneous

Granite / Arkosic Sandstone (Coarse Igneous or Sedimentary Aggregate)

Granite / Quartz-Feldspar Aggregate

Siltstone (Siltstone (primarily composed of quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (primarily composed of quartz and clay minerals)

Siltstone (Siltstone (primarily composed of quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (primarily composed of quartz and clay minerals)

Siltstone (Siltstone (composed of mixed silicate minerals and clay)) — sedimentary

Siltstone

Siltstone (composed of mixed silicate minerals and clay)

Siltstone (Siltstone (composed of microscopic quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (composed of microscopic quartz and clay minerals)

River Siltstone Pebble (Siltstone (primarily composed of silica and clay minerals)) — sedimentary

River Siltstone Pebble

Siltstone (primarily composed of silica and clay minerals)

Siltstone with Weathering Rind (Siltstone (composed of microscopic quartz and clay minerals)) — sedimentary

Siltstone with Weathering Rind

Siltstone (composed of microscopic quartz and clay minerals)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Potash (Sylvite/Potassium Feldspar) (Potassium chloride (KCl) or Orthoclase (KAlSi3O8)) — mineral

Potash (Sylvite/Potassium Feldspar)

Potassium chloride (KCl) or Orthoclase (KAlSi3O8)

Sandstone Pebble (Sedimentary quartz arenite) — sedimentary

Sandstone Pebble

Sedimentary quartz arenite

Sandstone (Clastic sedimentary rock (Quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Malachite (Copper carbonate hydroxide, Cu2CO3(OH)2) — mineral

Malachite

Copper carbonate hydroxide, Cu2CO3(OH)2

Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — Mineral

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Arsenopyrite in Quartz Matrix (Arsenopyrite (FeAsS) with Quartz (SiO2)) — Mineral in a Metamorphic/Hydrothermal rock

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Mineral in a Metamorphic/Hydrothermal rock

Granitic Pegmatite (Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)) — igneous

Granitic Pegmatite

Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)

Rough Diamond (Diamond (C)) — mineral

Rough Diamond

Diamond (C)

Siltstone Pebble (Siltstone (composed of microscopic quartz and clay minerals)) — sedimentary

Siltstone Pebble

Siltstone (composed of microscopic quartz and clay minerals)

Serpentinite (Serpentinite (composed primarily of minerals in the Serpentine group)) — metamorphic

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group)

Siltstone (Siltstone (primarily composed of silica and clay minerals)) — sedimentary

Siltstone

Siltstone (primarily composed of silica and clay minerals)

Siltstone (Siltstone (primarily composed of quartz and clay minerals)) — sedimentary

Siltstone

Siltstone (primarily composed of quartz and clay minerals)

River Siltstone / Mudstone Pebble (Siltstone (composed of mixed silicate and carbonate minerals)) — sedimentary

River Siltstone / Mudstone Pebble

Siltstone (composed of mixed silicate and carbonate minerals)

Ferruginous Sandstone (Gozzan) (Iron-rich clastic sedimentary rock with Limonite/Goethite) — sedimentary

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Garnet (Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3

Red jasper (iron-rich chalcedony), possibly brecciated (Jasper: microcrystalline quartz, SiO₂, colored mainly by iron oxides/hydroxides) — mineral

Red jasper (iron-rich chalcedony), possibly brecciated

Jasper: microcrystalline quartz, SiO₂, colored mainly by iron oxides/hydroxides

Weathered iron-rich quartzite or ironstone cobble (Quartzite, likely limonite/goethite-stained (SiO₂ with FeO(OH)·nH₂O)) — metamorphic

Weathered iron-rich quartzite or ironstone cobble

Quartzite, likely limonite/goethite-stained (SiO₂ with FeO(OH)·nH₂O)

Likely polished garnet (Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)) — gemstone

Likely polished garnet

Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)