Rock Identifier

Category

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

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Varieties including Rose Quartz and Citrine) (Silicon Dioxide (SiO2)) — mineral

Quartz (Varieties including Rose Quartz and Citrine)

Silicon Dioxide (SiO2)

Apatite (Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Tumbled Stone Assortment (Various silicate minerals (e.g., Quartz, Feldspar)) — mineral

Tumbled Stone Assortment

Various silicate minerals (e.g., Quartz, Feldspar)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Blue Apatite

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

Red jasper chips (Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides) — metamorphic

Red jasper chips

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Likely weathered granite or granitic rock (Granite; quartz + feldspar + mica, compositionally variable) — igneous

Likely weathered granite or granitic rock

Granite; quartz + feldspar + mica, compositionally variable

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)

Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Blue Apatite

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

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Micaceous schist (Mica schist, commonly muscovite–biotite–quartz schist) — metamorphic

Micaceous schist

Mica schist, commonly muscovite–biotite–quartz schist

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

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

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Conglomerate (Conglomeratic Sandstone) — sedimentary

Conglomerate

Conglomeratic Sandstone

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

Granite / Feldspar gravel

Granite (felsic intrusive igneous rock)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Conglomerate (pebble-rich rock) (Clastic sedimentary rock composed of rounded pebble- to gravel-sized clasts cemented in a finer matrix) — sedimentary

Conglomerate (pebble-rich rock)

Clastic sedimentary rock composed of rounded pebble- to gravel-sized clasts cemented in a finer matrix

Conglomerate (Conglomerate) — sedimentary

Conglomerate

Conglomerate