Quartzite
Quartzite (primarily SiO2)
Category
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Yellow Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Garnet
Almandine formula: Fe3Al2(SiO4)3
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Moonstone (Feldspar)
Orthoclase feldspar, (K,Na)AlSi3O8
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Epidote in Matrix (Unakite-related)
Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
Serpentine
Antigorite / Lizardite / Chrysotile [(Mg,Fe)3Si2O5(OH)4]
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
River Cobble (Salt and Pepper Gneiss)
Gneiss (High-grade regional metamorphic rock)
Serpentinite
Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
Quartzite
Quartzite (primarily SiO2)
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
Emerald with Matrix (Emerald in Mica Schist)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Pebble
Clast (specifically a granule or small pebble)
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Serpentinite
Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)
Dragon Blood Jasper (Epidote with Piedmontite or Quartz)
Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
Gneiss (with Quartzite and Biotite)
Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)
Mica Schist
Mica Schist
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Arkosic Sandstone (or Conglomeritic Sandstone fragment)
Arkose (rich in feldspar)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)