Rock Identifier

Category

Igneous, Sedimentary, And Metamorphic Mix

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

Black Sand (Magnetite Sand) (Magnetite (Fe3O4)) — mineral

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — mineral

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Quartz / Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Chalcopyrite in Matrix (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite in Matrix

Chalcopyrite (CuFeS2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz/Citrine Type) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz/Citrine Type)

Silicon Dioxide (SiO2)

Biotite Mica (K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2) — Mineral

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Greenstone / Greenschist (Chlorite schist / Epidiorite) — metamorphic

Greenstone / Greenschist

Chlorite schist / Epidiorite

Almandine Garnet in Schist (Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist) — metamorphic

Almandine Garnet in Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Travertine (Terrestrial Sedimentary Limestone (CaCO3)) — sedimentary

Travertine

Terrestrial Sedimentary Limestone (CaCO3)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

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

Mica (Muscovite)

Muscovite (KAl2(AlSi3O10)(OH)2)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix) — Metamorphic or Igneous (context dependent)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix

Metamorphic or Igneous (context dependent)

Granite (with Almandine Garnet inclusions) (Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)) — igneous

Granite (with Almandine Garnet inclusions)

Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)

Calcite (Calcite (CaCO₃, Calcium Carbonate)) — Mineral

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — Mineral (Variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Mineral (Variety of Quartz)

Labradorite ((Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)) — mineral

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)

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

Cloud Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

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

Cloudy Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Vein (Iron-stained) (Silicon Dioxide (SiO2) with limonite/hematite staining) — mineral

Quartz Vein (Iron-stained)

Silicon Dioxide (SiO2) with limonite/hematite staining

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Galena (Lead(II) sulfide (PbS)) — mineral

Galena

Lead(II) sulfide (PbS)

Garnet (Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)) — mineral

Garnet

Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)

Green Aventurine and Clear Quartz (Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)) — Mineral

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Quartzite with Mafic Intrusion (Gneiss/Schist Contact) (Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist) — metamorphic

Quartzite with Mafic Intrusion (Gneiss/Schist Contact)

Metamorphic Quartzite (SiO2) with Amphibole/Biotite Schist

Muscovite (Mica) (Muscovite - KAl2(AlSi3O10)(OH)2) — Mineral

Muscovite (Mica)

Muscovite - KAl2(AlSi3O10)(OH)2

Milky Quartz (Quartz (SiO2)) — Mineral

Milky Quartz

Quartz (SiO2)

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)) — mineral

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Chlorite (Small Flakes/Sand) (Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)) — mineral

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Ruby (Corundum) (Corundum (Aluminum Oxide) with chromium trace elements, Al2O3) — mineral

Ruby (Corundum)

Corundum (Aluminum Oxide) with chromium trace elements, Al2O3

Moonstone (Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)

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

Smoky Quartz

Quartz (Silicon Dioxide, SiO2)

Feldspar (likely Amazonite or Plagioclase) (Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate) — mineral

Feldspar (likely Amazonite or Plagioclase)

Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate

Peacock Ore (Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)) — mineral

Peacock Ore

Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)

Quartz with Iron Stains (Silicon Dioxide (SiO2) with FeOx inclusions) — mineral

Quartz with Iron Stains

Silicon Dioxide (SiO2) with FeOx inclusions