Schist
Schist (Crystalline Metamorphic Rock)
metamorphic
Category
Igneous Or Metamorphic
Browse igneous or metamorphic specimens identified by the Rock Identifier community.
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Greenschist / Serpentinite
Metamorphic rock rich in chlorite/actinolite/serpentine
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Weathered foliated metamorphic rock, likely gneiss or schist
Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface and mineral tests
metamorphic
Quartz-veined Metamorphic Pebble
Silicate-rich metamorphic rock with quartz veins (SiO2)
metamorphic
Greenstone Pebble
Metabasalt / Greenschist
metamorphic
Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe,Al)2O5(OH)4
metamorphic
Gneiss
Gneiss
metamorphic
Unakite
Epidotized Granite
metamorphic
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
metamorphic
Mixed mineral and rock collection
Predominantly quartz varieties, including amethyst, plus likely calcite, feldspar, mica, and miscellaneous polished stones
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Ruby / Red Tourmaline
Corundum (Al2O3) or Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Citrine and Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (KAlSi3O8)
mineral
Raw Quartz
Silicon Dioxide (SiO2)
mineral