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

Muscovite Mica in Quartz (Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2) and Silicon Dioxide (SiO2)) — metamorphic

Muscovite Mica in Quartz

Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2) and Silicon Dioxide (SiO2)

Basalt Pebble (Extrusive Igneous Rock) — igneous

Basalt Pebble

Extrusive Igneous Rock

Banded Rhyolite (likely Green Jasper/Agate variety) (Silicon Dioxide (SiO2) with mineral inclusions) — igneous

Banded Rhyolite (likely Green Jasper/Agate variety)

Silicon Dioxide (SiO2) with mineral inclusions

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Porphyritic Andesite (Andesite) — igneous

Porphyritic Andesite

Andesite

Diorite (Diorite (intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (intermediate intrusive igneous rock)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Mica (Biotite or Phlogopite Buchsam) (Silicate Mineral (Phyllosilicate family)) — mineral

Mica (Biotite or Phlogopite Buchsam)

Silicate Mineral (Phyllosilicate family)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Dalmatian Stone (Dalmatian Jasper / Feldspathic Igneous Rock) — igneous

Dalmatian Stone

Dalmatian Jasper / Feldspathic Igneous Rock

Dark mafic rock, likely basalt (Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)) — igneous

Dark mafic rock, likely basalt

Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)

Basalt Pebble (Extrusive igneous rock) — igneous

Basalt Pebble

Extrusive igneous rock

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Grey Agate (Silicon Dioxide (SiO2) - variety: Agate/Chalcedony) — mineral

Grey Agate

Silicon Dioxide (SiO2) - variety: Agate/Chalcedony

Polished serpentine (Serpentine-group minerals, chiefly lizardite and/or antigorite; approximate formula Mg₃Si₂O₅(OH)₄) — metamorphic

Polished serpentine

Serpentine-group minerals, chiefly lizardite and/or antigorite; approximate formula Mg₃Si₂O₅(OH)₄

River Pebble (Grey Quartzite / Sandstone Gravel) (Quartz-rich Sedimentary / Metamorphic River Pebble) — sedimentary

River Pebble (Grey Quartzite / Sandstone Gravel)

Quartz-rich Sedimentary / Metamorphic River Pebble

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Black Marble (Recrystallized Carbonate Rock (CaCO3)) — metamorphic

Black Marble

Recrystallized Carbonate Rock (CaCO3)

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

Biotite Mica

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

Epidote (Epidote - Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote

Epidote - Ca2(Al,Fe)3(SiO4)3(OH)

Granite Pebble (Granite (Plutonic Igneous Rock)) — igneous

Granite Pebble

Granite (Plutonic Igneous Rock)

Sunstone with Black Tourmaline (Arfvedsonite) (Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)) — mineral

Sunstone with Black Tourmaline (Arfvedsonite)

Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)

Muscovite Mica (in Quartz matrix) (Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica (in Quartz matrix)

Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2)

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

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Basalt (River Pebble) (Basalt) — igneous

Basalt (River Pebble)

Basalt

Granite (Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)) — igneous

Granite

Granite (composed primarily of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Granite Cobble (Granite) — igneous

Granite Cobble

Granite

Basalt with vesicles/amygdules (Basalt (containing volcanic glass and plagioclase)) — igneous

Basalt with vesicles/amygdules

Basalt (containing volcanic glass and plagioclase)

Granite Gravel / Pebbles (Granite (Plutonic Igneous Rock)) — igneous

Granite Gravel / Pebbles

Granite (Plutonic Igneous Rock)

Rhyolite Porphyry (Rhyolite (High-silica volcanic rock)) — igneous

Rhyolite Porphyry

Rhyolite (High-silica volcanic rock)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Sandstone (likely Fossilized Wood or Concrete Simulacrum) (Arenite / Silicified Wood / Anthropogenic Concrete) — sedimentary

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

Granite with Quartz inclusion (Granite (Mainly SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite with Quartz inclusion

Granite (Mainly SiO2, KAlSi3O8, NaAlSi3O8)

Porphyritic Andesite (Andesite (with white Plagioclase phenocrysts)) — igneous

Porphyritic Andesite

Andesite (with white Plagioclase phenocrysts)

Mixed river-worn rock collection (Uncertain; likely quartzite, sandstone, basalt, and weathered granite or gneiss) — igneous, sedimentary, metamorphic

Mixed river-worn rock collection

Uncertain; likely quartzite, sandstone, basalt, and weathered granite or gneiss

igneous, sedimentary, metamorphic

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Clear quartz sphere or polished quartz cabochon (tentative) (Quartz, silicon dioxide (SiO₂); appearance may also be consistent with ordinary glass, which cannot be ruled out from the image alone) — gemstone

Clear quartz sphere or polished quartz cabochon (tentative)

Quartz, silicon dioxide (SiO₂); appearance may also be consistent with ordinary glass, which cannot be ruled out from the image alone