Rock Identifier

Category

Mineral (Native Element Alloy)

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

Granite (Phaneritic Granocrystalline Igneous Rock) — igneous

Granite

Phaneritic Granocrystalline Igneous Rock

Diorite (River Pebble) (Diorite) — igneous

Diorite (River Pebble)

Diorite

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Andesite (Intermediate Volcanic Rock (Andesite)) — igneous

Andesite

Intermediate Volcanic Rock (Andesite)

Diabase (Greenstone Pebble) (Diabase or Dolerite) — igneous

Diabase (Greenstone Pebble)

Diabase or Dolerite

Sandstone Pebble with Iron Staining (Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)) — sedimentary

Sandstone Pebble with Iron Staining

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)

Granite (Pink/Red variety) (Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)) — igneous

Granite (Pink/Red variety)

Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Granite (Weathered) (Phaneritic Felsic Igneous Rock) — Igneous

Granite (Weathered)

Phaneritic Felsic Igneous Rock

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Granite Pebble (Granite (Phaneritic intrusive igneous rock)) — igneous

Granite Pebble

Granite (Phaneritic intrusive igneous rock)

Granite (Granite (Phaneritic igneous rock consisting of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (Phaneritic igneous rock consisting of Quartz, Feldspar, and Mica)

Basalt (with possible Olivine inclusions) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible Olivine inclusions)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Basalt (composition predominately plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (composition predominately plagioclase feldspar and pyroxene)

Granite (Granite (Mainly Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)) — igneous

Granite

Granite (Mainly Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Granite (Weathered) (Plutonic Igneous Rock (Granitic)) — igneous

Granite (Weathered)

Plutonic Igneous Rock (Granitic)

Blue Quartz (specifically Dumortierite Quartz) (Silicon Dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)) — metamorphic

Blue Quartz (specifically Dumortierite Quartz)

Silicon Dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)

Shale (Fissile mudrock (composed primarily of clay minerals and quartz)) — sedimentary

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Quartz (River Pebble) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz (River Pebble)

Quartz (Silicon Dioxide - SiO2)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Carnelian (Red Agate/Chalcedony) (Cryptocrystalline Quartz (SiO2) with Hematite impurities) — mineral

Carnelian (Red Agate/Chalcedony)

Cryptocrystalline Quartz (SiO2) with Hematite impurities

Opalite (Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)) — mineral

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Red Jasper (Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)) — mineral

Red Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)

Diamond (in jewelry) (Carbon (C)) — mineral

Diamond (in jewelry)

Carbon (C)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Yooperlite (Fluorescent Sodalite-bearing Syenite) — igneous

Yooperlite

Fluorescent Sodalite-bearing Syenite

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Quartz (Variety: Citrine or Tumbled Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety: Citrine or Tumbled Chalcedony)

Silicon Dioxide (SiO2)

Amazonite (K(AlSi3O8), Microcline (potassium feldspar)) — mineral

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Nephrite Jade

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

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Rose Quartz (Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron

Pyrite in Matrix (often with Chalcopyrite) (Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)) — mineral

Pyrite in Matrix (often with Chalcopyrite)

Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)

Muscovite Mica (Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,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

Peridot (Olivine (Mg, Fe)₂SiO₄) — mineral

Peridot

Olivine (Mg, Fe)₂SiO₄

Iolite (Cordierite) (Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18) — metamorphic

Iolite (Cordierite)

Cordierite (Magnesium iron aluminum cyclosilicate), Mg2Al4Si5O18

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)