Rock Identifier

Category

Mixed (Predominantly Sedimentary And Igneous)

Browse mixed (predominantly sedimentary and igneous) specimens identified by the Rock Identifier community.

Learn about Mixed (Predominantly Sedimentary And Igneous) in the encyclopedia

Migmatite

Carbonatite

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Turbidite

Lamproite

Troctolite

Basalt

Gabbro

Kimberlite

Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Pyrope Garnet (Magnesium aluminum silicate (Mg3Al2Si3O12)) — mineral

Pyrope Garnet

Magnesium aluminum silicate (Mg3Al2Si3O12)

Amazonite (Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

Limonite / Ironstone (FeO(OH)·nH2O) — sedimentary

Limonite / Ironstone

FeO(OH)·nH2O

Sandstone Pebble (Sandstone (SiO2 rich clastic rock)) — sedimentary

Sandstone Pebble

Sandstone (SiO2 rich clastic rock)

Lapis Lazuli (Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)

Unakite (Unakite (Metasomatized Granodiorite)) — metamorphic

Unakite

Unakite (Metasomatized Granodiorite)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Sandstone (Arenite (predominantly SiO2 with iron oxides)) — sedimentary

Sandstone

Arenite (predominantly SiO2 with iron oxides)

Lapis lazuli bead bracelet (Lazurite-bearing calcite–pyrite rock; lazurite formula (Na,Ca)₈(AlSiO₄)₆(S,SO)₂) — metamorphic

Lapis lazuli bead bracelet

Lazurite-bearing calcite–pyrite rock; lazurite formula (Na,Ca)₈(AlSiO₄)₆(S,SO)₂

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Labradorite (Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

Sandstone (Sandstone (SiO2 dominant, with minor feldspar and clay minerals)) — sedimentary

Sandstone

Sandstone (SiO2 dominant, with minor feldspar and clay minerals)

Sandstone (Quartzose Sandstone / Feldspathic Sandstone) (SiO2 with minor impurities (Fe2O3, KAlSi3O8)) — sedimentary

Sandstone (Quartzose Sandstone / Feldspathic Sandstone)

SiO2 with minor impurities (Fe2O3, KAlSi3O8)

Sandstone (Pebble) (Sandstone (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 with iron oxide impurities)

Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Dalmation Stone (often called Dalmatian Jasper) (Antiperthite-rich Microgranite) — igneous

Dalmation Stone (often called Dalmatian Jasper)

Antiperthite-rich Microgranite

Granite Cobble (Felsic intrusive igneous rock) — igneous

Granite Cobble

Felsic intrusive igneous rock

Sandstone Pebble (Sedimentary Rock (Quartz Arenite)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartz Arenite)

Eclipse Stone (Kabamba Jasper) (Rhyolite with Aegirine (NaFe3+Si2O6)) — metamorphic

Eclipse Stone (Kabamba Jasper)

Rhyolite with Aegirine (NaFe3+Si2O6)

Anthracite Coal (Carbon (with organic impurities)) — sedimentary

Anthracite Coal

Carbon (with organic impurities)

Kambaba Jasper (Crocodile Jasper) (Stromatolitic Rhyolite/Jasper (SiO2)) — sedimentary

Kambaba Jasper (Crocodile Jasper)

Stromatolitic Rhyolite/Jasper (SiO2)

Himalayan Pink Salt (Halite) (Halite (Sodium Chloride, NaCl)) — sedimentary

Himalayan Pink Salt (Halite)

Halite (Sodium Chloride, NaCl)

Amethyst (Silicon dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon dioxide (SiO2) with iron impurities

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

Sandstone (Sedimentary Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Arenite)

Folded Schist / Gneiss (Metamorphic Rock) (Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)) — metamorphic

Folded Schist / Gneiss (Metamorphic Rock)

Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)

Calamites fossil (Calamites (extinct genus of arborescent horsetails)) — fossil

Calamites fossil

Calamites (extinct genus of arborescent horsetails)

Granite (Granite (High-silica plutonic rock)) — Igneous

Granite

Granite (High-silica plutonic rock)

Snowflake Obsidian (Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)

Dalmatian Stone (Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)) — igneous

Dalmatian Stone

Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)

Amethyst (Tumbled) (Amethyst (Silicon Dioxide with Iron impurities) - SiO2) — mineral

Amethyst (Tumbled)

Amethyst (Silicon Dioxide with Iron impurities) - SiO2

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Sandstone with Quartz Vein (Quartzose Sandstone with Hydrothermal Quartz) — sedimentary

Sandstone with Quartz Vein

Quartzose Sandstone with Hydrothermal Quartz

Concrete Fragment (Hardened Portland Cement Composite) — Anthropogenic (Man-made material mimicking sedimentary rock)

Concrete Fragment

Hardened Portland Cement Composite

Anthropogenic (Man-made material mimicking sedimentary rock)

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

Granite

Granite (Plutonic Felsic Igneous Rock)

Limonite (Iron Ore) (Limonite (mixed iron hydroxides, primarily FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (mixed iron hydroxides, primarily FeO(OH)·nH2O)

Carnelian (Red Agate) (Silicon dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (Red Agate)

Silicon dioxide (SiO2) with iron oxide impurities

Sandstone (Clastic sedimentary rock) — sedimentary

Sandstone

Clastic sedimentary rock

Orbicular Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Orbicular Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock