Rock Identifier

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Igneous, Metamorphic, And Sedimentary (Mixed Assemblage)

Browse igneous, metamorphic, and sedimentary (mixed assemblage) specimens identified by the Rock Identifier community.

Learn about Igneous, Metamorphic, And Sedimentary (Mixed Assemblage) in the encyclopedia

Migmatite

Cordierite Hornfels

Cordierite Hornfels

Whiteschist

Turbidite

Hornblende Schist

Hornblende Schist

Calc-schist

Goldmanite

Carbonatite

Conglomerate

Eulysite

Anthracite

Ironstone

Tumbled dark green stone, likely greenstone/serpentinite (Serpentinite (serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄), possibly chlorite-rich greenstone) — metamorphic

Tumbled dark green stone, likely greenstone/serpentinite

Serpentinite (serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄), possibly chlorite-rich greenstone

Pink Granite (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock

Polished/tumbled rhodonite-rich stone (Rhodonite (MnSiO₃), likely mixed with quartz and manganese oxides) — metamorphic

Polished/tumbled rhodonite-rich stone

Rhodonite (MnSiO₃), likely mixed with quartz and manganese oxides

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Clear Quartz (Faceted) (SiO2 - Silicon Dioxide) — gemstone

Clear Quartz (Faceted)

SiO2 - Silicon Dioxide

Granite (Pink/Potassium Feldspar rich) (Granite (K-feldspar rich intrusive igneous rock)) — igneous

Granite (Pink/Potassium Feldspar rich)

Granite (K-feldspar rich intrusive igneous rock)

Granite / Feldspar gravel (Granite (felsic intrusive igneous rock)) — igneous

Granite / Feldspar gravel

Granite (felsic intrusive igneous rock)

Unakite (Altered Granite (Epidotized Granite)) — metamorphic

Unakite

Altered Granite (Epidotized Granite)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Breccia (Breccia (Clastic sedimentary rock)) — sedimentary

Breccia

Breccia (Clastic sedimentary rock)

Concrete rubble (Anthropogenic conglomerate) — sedimentary

Concrete rubble

Anthropogenic conglomerate

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Gravel or Pebble (Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)) — sedimentary

Gravel or Pebble

Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)

Granite pebble (Coarse-grained granitic rock, primarily quartz–feldspar–biotite) — igneous

Granite pebble

Coarse-grained granitic rock, primarily quartz–feldspar–biotite

Granodiorite (Intermediate Phaneritic Plutonic Rock) — igneous

Granodiorite

Intermediate Phaneritic Plutonic Rock

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Chert (with Epidote/Quartz veining) (Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions) — sedimentary

Chert (with Epidote/Quartz veining)

Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions

Milky Quartz (Quartz (SiO2)) — mineral

Milky Quartz

Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Granite Pebble

Intrusive Igneous Rock (Granite)

Greenstone / Diorite (Intermediate plutonic igneous rock) — igneous

Greenstone / Diorite

Intermediate plutonic igneous rock

Gravelly, weathered sediment (likely glacial till) (Unconsolidated diamicton; mixed lithologies, commonly including quartz, feldspar, and weathered silicate rock fragments) — sedimentary

Gravelly, weathered sediment (likely glacial till)

Unconsolidated diamicton; mixed lithologies, commonly including quartz, feldspar, and weathered silicate rock fragments

Quartz with Iron Staining (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Quartz (Raw Chunk) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Mixed Crushed Stone (Aggregate (varied mineral composition)) — igneous and sedimentary mixture

Mixed Crushed Stone

Aggregate (varied mineral composition)

igneous and sedimentary mixture

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Copper Ore (Cupriferous Rock / Mixed Mineral Matrix) — igneous

Copper Ore

Cupriferous Rock / Mixed Mineral Matrix

Quartz geode (Microcrystalline and crystalline quartz, SiO₂, likely with chalcedony and iron-oxide staining) — mineral

Quartz geode

Microcrystalline and crystalline quartz, SiO₂, likely with chalcedony and iron-oxide staining

Yellow Jasper (Jasper (Silicon Dioxide with Iron Hydroxide impurities, SiO2 + FeO(OH))) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide with Iron Hydroxide impurities, SiO2 + FeO(OH))

Granite Pebble (Pegmatitic Quartz-Feldspar River Rock) (Granite / Quartz-Feldspar-Mica Aggregate) — igneous

Granite Pebble (Pegmatitic Quartz-Feldspar River Rock)

Granite / Quartz-Feldspar-Mica Aggregate

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

Red Granite

Granite (Felsic Plutonic Rock)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Weathered brown sandstone or quartzite cobble (Indeterminate sandstone; possibly quartz-rich quartzite) — sedimentary

Weathered brown sandstone or quartzite cobble

Indeterminate sandstone; possibly quartz-rich quartzite

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Colorless Quartz (Rhinestone) (Silicon Dioxide (SiO2)) — mineral

Colorless Quartz (Rhinestone)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue Apatite (Apatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Apatite (Ca5(PO4)3(F,Cl,OH))

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Mahogany Obsidian (Volcanic Glass (SiO2 with Hematite/Magnetite inclusions)) — igneous

Mahogany Obsidian

Volcanic Glass (SiO2 with Hematite/Magnetite inclusions)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock