Rock Identifier

Category

Sedimentary Or Metamorphic

Browse sedimentary or metamorphic specimens identified by the Rock Identifier community.

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Red Quartzite (Strawberry Quartz) (Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Red Quartzite (Strawberry Quartz)

Quartzite (SiO2 with iron oxide inclusions)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Quartzite (Quartzite (composed primarily of Quartz, SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of Quartz, SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Yellow Aventurine (Quartz Quartzite) (Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)) — Metamorphic

Yellow Aventurine (Quartz Quartzite)

Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)

Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Verde Antique Marble (Serpentinite) (Serpentinite (composed mainly of Serpentine group minerals, Mg3Si2O5(OH)4)) — metamorphic

Verde Antique Marble (Serpentinite)

Serpentinite (composed mainly of Serpentine group minerals, Mg3Si2O5(OH)4)

Unakite (Epidotized Granite) (Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)) — metamorphic

Unakite (Epidotized Granite)

Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Quartzite (Water-Worn) (Quartzite (SiO2)) — metamorphic

Quartzite (Water-Worn)

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Lapis Lazuli (Tumbled Stone) (Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (predominantly Lazurite)) — metamorphic

Lapis Lazuli (Tumbled Stone)

Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (predominantly Lazurite)

Wishing Stone (Quartz-Veined Pebble) (Hydrothermal Quartz in Metasedimentary Matrix (SiO2/Matrix)) — metamorphic

Wishing Stone (Quartz-Veined Pebble)

Hydrothermal Quartz in Metasedimentary Matrix (SiO2/Matrix)

Lapis Lazuli (Complex rock primarily of Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2), with Pyrite and Calcite) — metamorphic

Lapis Lazuli

Complex rock primarily of Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2), with Pyrite and Calcite

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

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Iron-stained Quartzite (Recrystallized Quartz (SiO2) with Hematite/Limonite staining) — metamorphic

Iron-stained Quartzite

Recrystallized Quartz (SiO2) with Hematite/Limonite staining

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Unakite (Unakite (Epidotized Granite)) — metamorphic

Unakite

Unakite (Epidotized Granite)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (Silicon Dioxide: SiO2)

Lapis Lazuli (Complex mixture containing Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Complex mixture containing Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Serpentine (Nephrite-like Serpentine) (Serpentinite (Hydrous magnesium iron phyllosilicate)) — metamorphic

Serpentine (Nephrite-like Serpentine)

Serpentinite (Hydrous magnesium iron phyllosilicate)

Quartzite with Quartz Vein (Metamorphosed Quartz-rich Arenite (SiO2)) — metamorphic

Quartzite with Quartz Vein

Metamorphosed Quartz-rich Arenite (SiO2)

Quartz Pebble (Water-worn Quartzite) (Silicon Dioxide (SiO2)) — metamorphic

Quartz Pebble (Water-worn Quartzite)

Silicon Dioxide (SiO2)

Quartzite with Hematite staining (Quartzite (SiO2) with iron oxide inclusions) — metamorphic

Quartzite with Hematite staining

Quartzite (SiO2) with iron oxide inclusions

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Charoite (Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O) — metamorphic

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Anthracite Coal (Anthracite (Carbon-rich mineraloid)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich mineraloid)

Ruby in Fuchsite (Corundum (Al2O3) in Chrome-Mica (KAl2(AlSi3O10)(OH)2)) — metamorphic

Ruby in Fuchsite

Corundum (Al2O3) in Chrome-Mica (KAl2(AlSi3O10)(OH)2)

Fulgurite (Fulgurite (Lechatelierite), amorphous SiO2) — metamorphic

Fulgurite

Fulgurite (Lechatelierite), amorphous SiO2

Quartzite (Quartzite (principally SiO2)) — metamorphic

Quartzite

Quartzite (principally SiO2)

Anthracite (Anthracite (highest-grade coal)) — metamorphic

Anthracite

Anthracite (highest-grade coal)

Yellow Aventurine (Quartzite with inclusions (SiO2)) — metamorphic

Yellow Aventurine

Quartzite with inclusions (SiO2)