Rock Identifier

Category

Mineral, Often Found As A Rock (Metamorphic)

Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.

Nephrite Jade (or Serpentine) (Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals) — Mineral/Rock

Nephrite Jade (or Serpentine)

Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals

Quartz (Crystal/Druzy Quartz) (Quartz (SiO₂)) — Mineral

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Garnet in Schist (Garnetiferous Micaceous Schist) (Almandine Garnet, Fe3Al2(SiO4)3) — metamorphic

Garnet in Schist (Garnetiferous Micaceous Schist)

Almandine Garnet, Fe3Al2(SiO4)3

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky/Common) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Kyanite (within Quartz) (Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)) — metamorphic

Kyanite (within Quartz)

Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)

Sunstone (Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8) — Mineral

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

Shatter Cone (Impactite (Shatter Cone texture)) — metamorphic

Shatter Cone

Impactite (Shatter Cone texture)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Marble (Carrara style) (Recrystallized Calcite-rich Metamorphic Rock (CaCO3)) — metamorphic

Marble (Carrara style)

Recrystallized Calcite-rich Metamorphic Rock (CaCO3)

Gneiss (with Quartz-Feldspar vein) (Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)) — metamorphic

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

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

Magnetite Sand (Black Sand)

Magnetite (Fe3O4)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite in Quartz (Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz

Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)

Pyrite (locally known as Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (locally known as Fool's Gold)

Iron Sulfide (FeS2)

Fuchsite in Quartz (Muscovite (KAl2(AlSi3O10)(OH)2) containing Chromium + Quartz (SiO2)) — metamorphic

Fuchsite in Quartz

Muscovite (KAl2(AlSi3O10)(OH)2) containing Chromium + Quartz (SiO2)

Sodalite (Sodalite, Na8(Al6Si6O24)Cl2) — Mineral

Sodalite

Sodalite, Na8(Al6Si6O24)Cl2

Sandstone (with Iron Siderite Concretion) (Arenite with Ironstone Concretion (FeCO3)) — sedimentary

Sandstone (with Iron Siderite Concretion)

Arenite with Ironstone Concretion (FeCO3)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Garnet (Almandine variety) (Almandine Garnet (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine variety)

Almandine Garnet (Fe3Al2(SiO4)3)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Talc (Soapstone variety) (Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2) — mineral

Talc (Soapstone variety)

Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Epidote (with Quartz and Feldspar) (Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote (with Quartz and Feldspar)

Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)

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

Gneiss

Gneiss (high-grade metamorphic rock)

Sandstone (Arenite (Siliclastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Siliclastic Sedimentary Rock)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2) / Rock Crystal) — mineral

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli (Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)) — Mineral

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Basalt Porphyry (Porphyritic Basalt) — igneous

Basalt Porphyry

Porphyritic Basalt

Gneiss with Quartz Veining (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Quartz Vein Rock (Quartz (Silicon Dioxide, SiO2)) — igneous

Quartz Vein Rock

Quartz (Silicon Dioxide, SiO2)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Schist (Mica Schist (Medium-grade metamorphic rock)) — metamorphic

Schist

Mica Schist (Medium-grade metamorphic rock)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Granite Gneiss River Rock (Gneiss) — Metamorphic

Granite Gneiss River Rock

Gneiss