Rock Identifier

Category

Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)

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

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

Migmatite

Carbonatite

Metabasalt

Cordierite Hornfels

Cordierite Hornfels

Coal

Metagabbro

Claystone

Calc-Silicate Rock

Calc-Silicate Rock

Turbidite

Calc-schist

Shale

Eltyubyuite

Gneiss (Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)) — metamorphic

Gneiss

Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)

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)

Decorative opal-like turtle mosaic (Likely imitation or assembled opal material; exact stones cannot be confirmed visually) — gemstone

Decorative opal-like turtle mosaic

Likely imitation or assembled opal material; exact stones cannot be confirmed visually

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Polished magnetite-rich ironstone (probable magnetite/hematite nodule) (Magnetite, Fe₃O₄, possibly mixed with hematite, Fe₂O₃, and iron-bearing gangue) — mineral

Polished magnetite-rich ironstone (probable magnetite/hematite nodule)

Magnetite, Fe₃O₄, possibly mixed with hematite, Fe₂O₃, and iron-bearing gangue

Tourmaline (Mixed colors) (Boron silicate mineral (Na,Ca)(Li,Mg,Al,Fe,Mn,Ti,V,Cr)3Al6(BO3)3Si6O18(OH,F)4) — mineral

Tourmaline (Mixed colors)

Boron silicate mineral (Na,Ca)(Li,Mg,Al,Fe,Mn,Ti,V,Cr)3Al6(BO3)3Si6O18(OH,F)4

Gneiss (High-grade regional metamorphic rock (Foliated)) — metamorphic

Gneiss

High-grade regional metamorphic rock (Foliated)

Yellow serpentine (likely lemon chrysoprase/serpentine breccia) (Serpentine-group minerals, chiefly antigorite/lizardite; commonly mixed with magnesite and iron oxides) — metamorphic

Yellow serpentine (likely lemon chrysoprase/serpentine breccia)

Serpentine-group minerals, chiefly antigorite/lizardite; commonly mixed with magnesite and iron oxides

Granitic Gneiss (Gneiss (quartz-feldspar-mica complex)) — metamorphic

Granitic Gneiss

Gneiss (quartz-feldspar-mica complex)

Sandstone (lithic wake/graywacke variety) (Arenite/Greywacke (SiO2 with lithic fragments)) — sedimentary

Sandstone (lithic wake/graywacke variety)

Arenite/Greywacke (SiO2 with lithic fragments)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

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

Blue Apatite

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

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

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

Apatite

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

Gneiss (High-grade Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (High-grade Metamorphic Rock)

Gneiss

Biotite Schist (Biotite-rich Schist) — metamorphic

Biotite Schist

Biotite-rich Schist

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Likely blue-gray gneiss (Gneiss, a foliated metamorphic rock; exact mineral composition cannot be confirmed from the image) — metamorphic

Likely blue-gray gneiss

Gneiss, a foliated metamorphic rock; exact mineral composition cannot be confirmed from the image

Schist (Metamorphic Rock (Schist)) — metamorphic

Schist

Metamorphic Rock (Schist)

Mixed rounded rock and mineral gravel (Predominantly weathered basalt, quartz-rich fragments, and iron-stained silicate rocks; exact species cannot be determined reliably from the image) — igneous

Mixed rounded rock and mineral gravel

Predominantly weathered basalt, quartz-rich fragments, and iron-stained silicate rocks; exact species cannot be determined reliably from the image

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky Quartz / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz / Chalcedony)

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Banded gneiss (Gneiss, commonly quartz–feldspar–biotite gneiss) — metamorphic

Banded gneiss

Gneiss, commonly quartz–feldspar–biotite gneiss

Apatite (Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)

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 (Common or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)