Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Category
Metamorphic Rock
Browse metamorphic rock specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock in the encyclopedia
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Nuummite
Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
metamorphic
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartz / Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Lapis Lazuli
Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Lapis Lazuli
Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
metamorphic
Dendritic Agate or Spotted Quartzite
Silicon Dioxide (SiO2) with inclusions
metamorphic
Greenstone (Epidosite)
Epidosite (Metamorphosed Basalt/Diabase)
metamorphic
Arkosic Sandstone (or Conglomeritic Sandstone fragment)
Arkose (rich in feldspar)
sedimentary
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Quartz (Milky Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
metamorphic
Gneiss
Gneiss
metamorphic
Granite Gneiss
Felsic Gneiss
metamorphic
River Stone (likely Quartzite or Chert)
Recrystallized Silicon Dioxide (SiO2)
metamorphic
Tiger's Eye
SiO2 (Silicon Dioxide with inclusions of Goethite/Limonite)
Metamorphic
Tiger's Eye (likely Hawk's Eye variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
metamorphic
Mixed Mineral Collection (with Quartz, Beryl, and host rock)
Silicon Dioxide (Quartz), Be3Al2Si6O18 (Beryl), and associated Schist/Pegmatite
mineral
Chrysocolla (on host rock)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)
mineral
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Quartz (Milky/Common)
Quartz (Silicon Dioxide, SiO2)
mineral
Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Greenstone / Serpentinite
Serpentinite (composed largely of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite)
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Emerald with Matrix (Emerald in Mica Schist)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Serpentine
Serpentine Group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Quartzite
Quartzite (composed primarily of Silicon Dioxide, SiO2)
metamorphic