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Foliated Metamorphic Rock
metamorphic
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
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Yellow Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
River Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Schist
Crystalline Metamorphic Schist
metamorphic
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Quartzite
Quartzite
Metamorphic
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
White Buffalo Turquoise (or Howlite/Magnesite)
Calcite/Dolomite or Magnesite with Chert/Quartz inclusions
gemstone
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2
Metamorphic Rock / Mineral Association
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite with Quartz)
metamorphic
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)
Metamorphic Rock
River Stone / Pebble
Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)
Mineral, Sediment
Quartz (Float/Abraded)
Quartz (SiO₂)
Mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite
Mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)
Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)
Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)
Peridot (Olivine)
Olivine ((Mg,Fe)2SiO4)
Mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Agate
SiO2
Mineral/Gemstone
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Banded Gneiss
Gneiss (pronounced "nice")
Metamorphic Rock
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Eclogite
Eclogite (Omphacite + Pyrope)
metamorphic
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with various inclusions
Mineral, variety of Quartz
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Garnet (likely Almandine or Pyrope)
Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)
Mineral
Amethyst
Quartz (SiO2) variety
Mineral
Citrine
SiO2 (Silicon Dioxide)
Mineral
Eclogite
Eclogite (Pyrope garnet and Omphacite pyroxene)
metamorphic
Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)
Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates
igneous, sedimentary, and metamorphic