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

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Muscovite Mica (on Quartz Matrix) (Muscovite - KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica (on Quartz Matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Quartzite Cobble (Quartzite (SiO2 based metamorphic rock)) — metamorphic

Quartzite Cobble

Quartzite (SiO2 based metamorphic rock)

Quartz-veined Basalt or Diabase Pebble (Igneous rock with hydrothermal quartz vein) — igneous

Quartz-veined Basalt or Diabase Pebble

Igneous rock with hydrothermal quartz vein

Agate Geode (Chalcedony (cryptocrystalline SiO2)) — mineral

Agate Geode

Chalcedony (cryptocrystalline SiO2)

Muscovite Mica (Golden/Yellow variety) (KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica (Golden/Yellow variety)

KAl2(AlSi3O10)(F,OH)2

Granite (Felsic Intrusive Igneous Rock) — igneous

Granite

Felsic Intrusive Igneous Rock

Granite (Felsic Intrusive Igneous Rock) — igneous

Granite

Felsic Intrusive Igneous Rock

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Granite (Phaneritic Igneous Rock (Granitic)) — igneous

Granite

Phaneritic Igneous Rock (Granitic)

Granite (Granite (Phaneritic igneous rock)) — igneous

Granite

Granite (Phaneritic igneous rock)

Granite (Granite (Phaneritic Quartz-Feldspar Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Basalt (River Stone) (Extrusive mafic igneous rock) — igneous

Basalt (River Stone)

Extrusive mafic igneous rock

Quartzite (Metamorphosed Quartz Sandstone) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone

Native American Hammerstone / Pitted Stone (Modified lithic artifact (often quartzite, basalt, or granite)) — artifact / sedimentary or igneous rock

Native American Hammerstone / Pitted Stone

Modified lithic artifact (often quartzite, basalt, or granite)

artifact / sedimentary or igneous rock

Blue cabochon gemstone ring (Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel) — gemstone

Blue cabochon gemstone ring

Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel

Granite (Granite (Phaneritic Quartz-Feldspar Intrusive)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Intrusive)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Hawk's Eye / Pietersite (Tiger's Eye variant) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Hawk's Eye / Pietersite (Tiger's Eye variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

Graphite (Graphite (Chemical Formula: C)) — Mineral (Native Element)

Graphite

Graphite (Chemical Formula: C)

Mineral (Native Element)

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Granodiorite (Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)) — igneous

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

Porphyry (Porphyritic Igneous Rock) — igneous

Porphyry

Porphyritic Igneous Rock

Feldspar (Plagioclase / Potassium Feldspar) (Feldspar Group (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)) — mineral

Feldspar (Plagioclase / Potassium Feldspar)

Feldspar Group (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)

Pink Granite (Gneissic transition) (Pink Biotite Granite) — igneous

Pink Granite (Gneissic transition)

Pink Biotite Granite

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Basalt with Porphyritic Texture (Porphyritic Basalt) — igneous

Basalt with Porphyritic Texture

Porphyritic Basalt

Amygdaloidal Basalt (Basalt with secondary mineral infilling (commonly SiO2 or Zeolites)) — igneous

Amygdaloidal Basalt

Basalt with secondary mineral infilling (commonly SiO2 or Zeolites)

Granite (Felsic Plutonic Igneous Rock) — igneous

Granite

Felsic Plutonic Igneous Rock

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

Labradorite

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

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

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

Biotite Mica in Host Rock

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

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Phaneritic plutonic igneous rock (SiO2 range 65-75%)) — igneous

Granite

Phaneritic plutonic igneous rock (SiO2 range 65-75%)

Porphyritic Andesite or Basalt (Porphyritic Intermediate/Mafic Igneous Rock) — igneous

Porphyritic Andesite or Basalt

Porphyritic Intermediate/Mafic Igneous Rock

Basalt (Porphyritic) (Porphyritic Basalt) — igneous

Basalt (Porphyritic)

Porphyritic Basalt

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Citrine Quartz Geode (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz Geode

Silicon Dioxide (SiO2) with iron impurities