Rock Identifier

Category

Igneous, Sedimentary, And Metamorphic

Browse igneous, sedimentary, and metamorphic specimens identified by the Rock Identifier community.

Learn about Igneous, Sedimentary, And Metamorphic in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

Goldmanite

Feruvite

Andesine

Andesite

Andalusite

Andamooka Opal

Andradite Garnet

Andradite Garnet

Andesine-Labradorite

Andesine-Labradorite

Carbonatite

Green Schist (Greenschist (composed of chlorite, epidote, and actinolite)) — metamorphic

Green Schist

Greenschist (composed of chlorite, epidote, and actinolite)

Veined Pebble (likely a Quartz-Veined Pebble) (Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)) — Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)

Veined Pebble (likely a Quartz-Veined Pebble)

Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)

Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)

Ruby in Zoisite (Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende) — Metamorphic Rock (composed of multiple minerals)

Ruby in Zoisite

Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende

Metamorphic Rock (composed of multiple minerals)

Slate (Foliated Metamorphic Rock (composed of quartz, illite, chlorite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed of quartz, illite, chlorite)

Leopard Skin Jasper (Orbicular Jasper (Silicon Dioxide, SiO2)) — sedimentary

Leopard Skin Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Muscovite Mica (with Quartz) (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica (with Quartz)

Muscovite (KAl2(AlSi3O10)(OH)2)

Pyrite (or Fool's Gold) (Pyrite (FeS₂)) — Mineral

Pyrite (or Fool's Gold)

Pyrite (FeS₂)

Quartz (likely milky/gray variety) (Quartz (SiO₂)) — Mineral

Quartz (likely milky/gray variety)

Quartz (SiO₂)

Ruby (Corundum (Al2O3:Cr)) — gemstone

Ruby

Corundum (Al2O3:Cr)

Quartz Pebble with Epidote / Chlorite Inclusions (Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions) — mineral

Quartz Pebble with Epidote / Chlorite Inclusions

Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions

Tumbled Amethyst (Quartz (Silicon Dioxide, SiO2)) — mineral

Tumbled Amethyst

Quartz (Silicon Dioxide, SiO2)

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon dioxide (SiO2)) — mineral

Smoky Quartz

Silicon dioxide (SiO2)

Mystic Topaz (Treated Quartz or Topaz) (Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating) — gemstone

Mystic Topaz (Treated Quartz or Topaz)

Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating

Quartz with Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz with Matrix

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Green Aventurine (Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Gold Nugget / Placer Gold (Native Gold (Au)) — mineral

Gold Nugget / Placer Gold

Native Gold (Au)

Green Aventurine (or Jadeite/Nephrite Jade) (SiO2 (Silicon Dioxide) - Aventurine Quartz) — gemstone

Green Aventurine (or Jadeite/Nephrite Jade)

SiO2 (Silicon Dioxide) - Aventurine Quartz

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Banded Agate (Dyed) (Silicon Dioxide (SiO2) with impurities) — mineral

Banded Agate (Dyed)

Silicon Dioxide (SiO2) with impurities

Amazonite (Microcline (KAlSi3O8) with trace lead (Pb)) — mineral

Amazonite

Microcline (KAlSi3O8) with trace lead (Pb)

Aquamarine (Tumbled) (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine (Tumbled)

Beryl (Be3Al2Si6O18)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Amethyst Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2) with natural radiation treatment) — mineral

Smoky Quartz

Silicon Dioxide (SiO2) with natural radiation treatment

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz Crystal Cluster on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster on Matrix

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2) with Fe3+ impurities) — mineral

Citrine

Silicon Dioxide (SiO2) with Fe3+ impurities

Green Quartz (Prasiolite or Aventurine) (Silicon Dioxide (SiO2)) — mineral

Green Quartz (Prasiolite or Aventurine)

Silicon Dioxide (SiO2)

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Citrine (Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Amazonite (Microcline (variety Amazonite), K(AlSi3O8)) — mineral

Amazonite

Microcline (variety Amazonite), K(AlSi3O8)

Magnetite with Pyroxene (Magnetite (Fe3O4) in Mafic Igneous Matrix) — mineral/igneous

Magnetite with Pyroxene

Magnetite (Fe3O4) in Mafic Igneous Matrix

mineral/igneous

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)