Rock Identifier

Category

Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.

Learn about Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration) in the encyclopedia

Sard

Anthracite

Soapstone

Troctolite

Verdite

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Dalmatian Jasper

Dalmatian Jasper

Jet

Lapis Lazuli

Apophyllite

Hornblende Schist

Hornblende Schist

Chert (Arrowhead Fragment) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Arrowhead Fragment)

Silicon Dioxide (SiO2)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Muscovite (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

Painted pebble, likely a smooth river stone (Unidentified fine-grained natural rock; exact lithology cannot be determined from the image) — sedimentary

Painted pebble, likely a smooth river stone

Unidentified fine-grained natural rock; exact lithology cannot be determined from the image

Biotite (Mica) (Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2) — mineral

Biotite (Mica)

Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2

Quartzite (River Stone) (Quartzite (SiO2)) — metamorphic

Quartzite (River Stone)

Quartzite (SiO2)

Mica (Phyllosilicate (group name), typically Muscovite KAl2(AlSi3O10)(OH)2 or Biotite K(Mg,Fe)3(AlSi3O10)(OH)2) — mineral

Mica

Phyllosilicate (group name), typically Muscovite KAl2(AlSi3O10)(OH)2 or Biotite K(Mg,Fe)3(AlSi3O10)(OH)2

Kaolinite (Kaolin) (Kaolinite (Al2Si2O5(OH)4)) — mineral

Kaolinite (Kaolin)

Kaolinite (Al2Si2O5(OH)4)

Gold Mineral (Native Gold (Au)) — mineral

Gold Mineral

Native Gold (Au)

Chert (often called Flint) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Microcrystalline Quartz, SiO2)

Mica (Lepidolite or Muscovite) (Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)) — mineral

Mica (Lepidolite or Muscovite)

Phyllosilicate mineral (KAl2(AlSi3O10)(OH)2 for Muscovite)

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Biotite mica schist (probable) (Mica schist, dominated by biotite mica (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) with quartz and feldspar) — metamorphic

Biotite mica schist (probable)

Mica schist, dominated by biotite mica (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) with quartz and feldspar

Citrine (Citrine (Silicon Dioxide - SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide - SiO2)

Biotite (Mica) (K(Mg,Fe)3AlSi3O10(OH,F)2) — mineral

Biotite (Mica)

K(Mg,Fe)3AlSi3O10(OH,F)2

Muscovite mica (Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂) — mineral

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Amethyst (Quartz (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Quartzite Pebble (Metamorphosed Sandstone (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Sandstone (SiO2)

Biotite Schist (Biotite-rich Schist) — metamorphic

Biotite Schist

Biotite-rich Schist

Diorite (Diorite) — igneous

Diorite

Diorite

Weathered dark stone, possibly basalt (Basalt; commonly plagioclase feldspar, pyroxene, and minor olivine) — igneous

Weathered dark stone, possibly basalt

Basalt; commonly plagioclase feldspar, pyroxene, and minor olivine

Possibly biotite-rich mica schist or weathered mafic rock (Mica schist; chiefly biotite mica, quartz, and feldspar) — metamorphic

Possibly biotite-rich mica schist or weathered mafic rock

Mica schist; chiefly biotite mica, quartz, and feldspar

Ruby and Sapphire Cluster Ring (Corundum (Al2O3)) — gemstone

Ruby and Sapphire Cluster Ring

Corundum (Al2O3)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Citrine (Heat-treated Amethyst) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Mica-rich schist (likely quartz-mica schist) (Quartz–mica schist, commonly containing muscovite and/or biotite with quartz and feldspar) — metamorphic

Mica-rich schist (likely quartz-mica schist)

Quartz–mica schist, commonly containing muscovite and/or biotite with quartz and feldspar

Conglomerate (or Breccia / Porphyry) (Clastic Sedimentary Rock (Conglomerate / Sandstone)) — sedimentary

Conglomerate (or Breccia / Porphyry)

Clastic Sedimentary Rock (Conglomerate / Sandstone)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

Muscovite Mica (Muscovite [KAl2(AlSi3O10)(OH)2]) — mineral

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

White marble chips (Marble; predominantly calcite (CaCO₃)) — metamorphic

White marble chips

Marble; predominantly calcite (CaCO₃)

Rounded gray pebble, likely basalt (Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine) — igneous

Rounded gray pebble, likely basalt

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine

Biotite Schist (Biotite-rich Schist) — metamorphic

Biotite Schist

Biotite-rich Schist

Graphite (Graphite (C)) — mineral

Graphite

Graphite (C)

Chert (Arrowhead Artifact) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Arrowhead Artifact)

Microcrystalline Quartz (SiO2)

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

Labradorite

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

Blue Apatite (Fluorapatite - Ca5(PO4)3F) — mineral

Blue Apatite

Fluorapatite - Ca5(PO4)3F

Chert (Arrowhead artifact) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Arrowhead artifact)

Chert (Cryptocrystalline Silica, SiO2)

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

Labradorite

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

Peacock Ore (Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)) — mineral

Peacock Ore

Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)

Greenschist (Greenschist (Chlorite-Epidote-Actinolite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Granite Pebble (Intrusive Igneous Rock (Granite/Diorite aggregate)) — igneous

Granite Pebble

Intrusive Igneous Rock (Granite/Diorite aggregate)