Rock Identifier

Category

Metamorphic Mineral

Browse metamorphic mineral specimens identified by the Rock Identifier community.

Black Tourmaline (Schorl) (Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Specularite (Specular Hematite) (Iron Oxide (Fe2O3)) — mineral

Specularite (Specular Hematite)

Iron Oxide (Fe2O3)

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

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (Smoky Quartz (SiO2 - Silicon Dioxide with aluminum impurities)) — mineral

Smoky Quartz

Smoky Quartz (SiO2 - Silicon Dioxide with aluminum impurities)

Agate (translucent slice) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate (translucent slice)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Orthoclase Feldspar (Salmon variety) (Orthoclase, KAlSi3O8) — mineral

Orthoclase Feldspar (Salmon variety)

Orthoclase, KAlSi3O8

Quartz (River Siltstone Quartzite Pebble) (Silicon Dioxide (SiO2)) — metamorphic

Quartz (River Siltstone Quartzite Pebble)

Silicon Dioxide (SiO2)

Mixed Tumbled Stones Collection (Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)) — multiple

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Amethyst (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz Pebble (Iron-Stained) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble (Iron-Stained)

Quartz (Silicon Dioxide - SiO2)

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

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

Yellow Quartz (Citrine/Lemon Quartz)

Silicon Dioxide (SiO2)

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Quartz (Quartzite) (Silicon Dioxide (SiO2)) — metamorphic

Quartz (Quartzite)

Silicon Dioxide (SiO2)

Lapis Lazuli (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Coarse Sand Grain / Lithic Fragment (Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)) — sedimentary

Coarse Sand Grain / Lithic Fragment

Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)

Gneiss (Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)) — metamorphic

Gneiss

Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)

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

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Copper-bearing Mica Schist (Mica Schist with Native Copper inclusions) — metamorphic

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Amethyst (Silicon Dioxide (SiO2) with Iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with Iron impurities

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

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

Quartz

Quartz (Silicon Dioxide, SiO2)

Staurolite (Staurolite (Fe2+2Al9Si4O23(OH))) — metamorphic

Staurolite

Staurolite (Fe2+2Al9Si4O23(OH))

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Shale or Argillite (Shale (sedimentary) / Argillite (metamorphic)) — Sedimentary or Metamorphic (low-grade)

Shale or Argillite

Shale (sedimentary) / Argillite (metamorphic)

Sedimentary or Metamorphic (low-grade)

Nephrite Jade (River Cobble) (Nephrite (Silicate mineral: Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade (River Cobble)

Nephrite (Silicate mineral: Ca2(Mg, Fe)5Si8O22(OH)2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Quartzite (Quartzite (primarily SiO2)) — Metamorphic

Quartzite

Quartzite (primarily SiO2)

Lapis Lazuli (Lazurite (primary mineral component), (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2) — metamorphic

Lapis Lazuli

Lazurite (primary mineral component), (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Serpentinite (Serpentinite (a rock composed predominantly of serpentine group minerals)) — metamorphic

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)