Rock Identifier

Category

Igneous And Metamorphic Derivative (Weathered)

Browse igneous and metamorphic derivative (weathered) specimens identified by the Rock Identifier community.

Quartzite with Chert inclusions (Metamorphosed Quartz-rich Rock (SiO2)) — metamorphic

Quartzite with Chert inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Hypersthene (or Enstatite/Ferrosilite) (Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)) — Mineral

Hypersthene (or Enstatite/Ferrosilite)

Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

Mica Schist (Mica Schist (predominantly Muscovite/Biotite)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite/Biotite)

Black Tourmaline (Schorl) (Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))) — mineral

Black Tourmaline (Schorl)

Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble (with Iron Staining) (Quartzite (mainly SiO2)) — metamorphic

Quartzite Pebble (with Iron Staining)

Quartzite (mainly SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Rounded Pebble) (Quartzite (predominantly SiO2)) — metamorphic

Quartzite (Rounded Pebble)

Quartzite (predominantly SiO2)

Quartzite (Pebble) (Quartzite) — metamorphic

Quartzite (Pebble)

Quartzite

Slate (Slate (Metamorphosed Mudstone/Shale)) — metamorphic

Slate

Slate (Metamorphosed Mudstone/Shale)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

River Rock (Basalt/Greywacke) (Aphanitic Basalt or Lithic Sandstone (Greywacke)) — igneous

River Rock (Basalt/Greywacke)

Aphanitic Basalt or Lithic Sandstone (Greywacke)

Green Quartzite (Aventurine-like) (Quartzite (primarily SiO2 with trace Fuchsite mica inclusions)) — metamorphic

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with trace Fuchsite mica inclusions)

Pumice (likely weathered/water-worn) (Vesicular volcanic glass) — igneous

Pumice (likely weathered/water-worn)

Vesicular volcanic glass

Zoisite with Ruby (Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)) — metamorphic

Zoisite with Ruby

Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)

Granite (Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)

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

Pink Granite

Granite (Felsic Plutonic Rock)

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Granodiorite (or Granite) Pebble (Phaneritic Felsic Igneous Pebble) — igneous

Granodiorite (or Granite) Pebble

Phaneritic Felsic Igneous Pebble

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Asphalt (Bituminous Concrete) (Asphaltum / Bitumen-Aggregate Matrix) — Technonatural composite (often containing sedimentary/igneous aggregate)

Asphalt (Bituminous Concrete)

Asphaltum / Bitumen-Aggregate Matrix

Technonatural composite (often containing sedimentary/igneous aggregate)

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

Milky Quartz with inclusions

Quartz (Silicon Dioxide, SiO2)

Magnetite (potentially Hematite-rich) (Magnetite (Fe3O4)) — mineral

Magnetite (potentially Hematite-rich)

Magnetite (Fe3O4)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

Black Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Red Quartzite River Pebble (Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Red Quartzite River Pebble

Quartzite (SiO2 with iron oxide inclusions)

Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble (Quartzite (SiO2 with minor impurities)) — metamorphic

Quartzite Pebble

Quartzite (SiO2 with minor impurities)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

River Rock (likely Quartzite or Quartz-rich Siltstone) (Quartzite (SiO2)) — metamorphic

River Rock (likely Quartzite or Quartz-rich Siltstone)

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt with Iron Oxides (Mafic Igneous Rock (Mafite)) — igneous

Basalt with Iron Oxides

Mafic Igneous Rock (Mafite)

Quartz (Milky or Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Smoky variety)

Silicon Dioxide (SiO2)

Labradorite (a variety of Feldspar) (Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)) — igneous

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)