Rock Identifier

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Browse not a rock specimens identified by the Rock Identifier community.

Puddingstone (Conglomerate) — Sedimentary

Puddingstone

Conglomerate

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Volcanic Rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

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

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Mica Schist (Mica Schist (Complex Silicate Rock)) — metamorphic

Mica Schist

Mica Schist (Complex Silicate Rock)

Quartzite River Pebble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphosed Quartz Sandstone (SiO2)

Chert (Yellow/Tan) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow/Tan)

Microcrystalline Quartz (SiO2)

Oolite (Ooids) (Oolitic Limestone (Principal mineral: Calcite, CaCO3)) — sedimentary

Oolite (Ooids)

Oolitic Limestone (Principal mineral: Calcite, CaCO3)

Basalt (Basalt) — igneous

Basalt

Basalt

Vesicular Basalt (Basalt with vesicular texture) — igneous

Vesicular Basalt

Basalt with vesicular texture

Chert (Jasper/Mudstone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Mudstone)

Silicon Dioxide (SiO2)

Basalt (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Chert (Jasper type) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper type)

Microcrystalline Quartz (SiO2)

Chert (Nodular Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodular Chert)

Silicon Dioxide (SiO2)

Dyed Pumice (Vesicular Rhyolite (Artificial Coloration Addition)) — igneous

Dyed Pumice

Vesicular Rhyolite (Artificial Coloration Addition)

Serpentine (Antigorite, Lizardite, or Chrysotile; (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile; (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Pumice (Pumice (a volcanic glass, primarily SiO2 with Al2O3)) — igneous

Pumice

Pumice (a volcanic glass, primarily SiO2 with Al2O3)

Granite (Granitoid (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)) — igneous

Granite

Granitoid (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)

Pumice (Pumice (Highly vesicular volcanic glass)) — igneous

Pumice

Pumice (Highly vesicular volcanic glass)

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Wonderstone (Banded Rhyolite (SiO2 with impurities)) — igneous

Wonderstone

Banded Rhyolite (SiO2 with impurities)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Black Marble (Recrystallized Limestone (CaCO3)) — metamorphic

Black Marble

Recrystallized Limestone (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Schist (Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)) — metamorphic

Schist

Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)

Sandstone (Arenite (composed primarily of SiO2, or Silicon Dioxide)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2, or Silicon Dioxide)

Limonite with Opal infusion (FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)) — mineral

Limonite with Opal infusion

FeO(OH)·nH2O (Limonite) / SiO2·nH2O (Opal)

Porphyritic Basalt (Chinese Writing Stone) (Porphyritic Basalt with Andalusite or Feldspar laths) — igneous

Porphyritic Basalt (Chinese Writing Stone)

Porphyritic Basalt with Andalusite or Feldspar laths

Chert (variations include Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Mahogany Obsidian (Volcanic Glass (predominantly SiO2 with inclusions of Hematite or Magnetite)) — igneous

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with inclusions of Hematite or Magnetite)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Slate (Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Quartzite pebble (Quartzite (SiO2)) — metamorphic

Quartzite pebble

Quartzite (SiO2)

Orange Quartzite (or Iron-Stained Quartz) (Silicon Dioxide (SiO2) with Iron Oxide impurities (Fe2O3)) — metamorphic

Orange Quartzite (or Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide impurities (Fe2O3)

Quartz (Druzy or Crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy or Crystalline variety)

Silicon Dioxide (SiO2)

Basalt with Olivine Phenocrysts (Porphyritic Basalt (with (Mg, Fe)2SiO4)) — igneous

Basalt with Olivine Phenocrysts

Porphyritic Basalt (with (Mg, Fe)2SiO4)

Que Sera Stone (Llanite) (Rhyolite containing blue quartz and feldspar) — igneous

Que Sera Stone (Llanite)

Rhyolite containing blue quartz and feldspar

Basalt (Basalt (Aphanitic Mafic Volcanic)) — igneous

Basalt

Basalt (Aphanitic Mafic Volcanic)

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)