Schist (Micaceous)
Mica Schist (predominantly Muscovite or Biotite)
metamorphic
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Quartzite
Quartzite (mainly Silicon Dioxide, SiO2)
metamorphic
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Staurolite (Fairy Cross)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Quartzite (with Metamorphic Foliation)
Quartzite (Recrystallized SiO2)
metamorphic
Clear Quartz (beads in a bracelet)
Quartz (SiO2)
Mineral
White Topaz
Al2SiO4(F,OH)2
mineral
Gneiss
Gneiss (pronounced 'nice')
Metamorphic Rock
Milky Quartz
Quartz (SiO₂)
Mineral
Amazonite
KAlSi3O8 (Potassium Feldspar, variety of Microcline)
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Quartz (in matrix)
Quartz (SiO₂)
mineral
Biotite Schist
Biotite Schist
metamorphic
Granite
Granite
igneous
Yellow Jade (Nephrite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Ruby in Zoisite with Hornblende
Anyolite (Ruby: Al2O3, Zoisite: Ca2Al3(SiO4)3(OH))
metamorphic
Unakite
Epidotized Granite (composition: K-feldspar, Epidote, and Quartz)
metamorphic
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn+2,Fe+2,Mg,Ca)SiO3
mineral
Quartzite (clastic/metamorphic subtype)
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Green Quartz / Aventurine
Silicon Dioxide (SiO2) with inclusions
Metamorphic
Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Epidote (Unakite-related)
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
Mineral
Dark-colored Igneous Rock (likely Basalt or Diabase)
Basalt (extrusive igneous) or Diabase (intrusive igneous)
Igneous Rock
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
River Rock (likely Quartzite or Chert)
Quartzite (primarily SiO2)
metamorphic
Epidote in Quartz (Unakite-like specimen)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)
metamorphic
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2) matrix
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist
metamorphic
Milky Quartz (with Chlorite/Mineral Inclusions)
Silicon Dioxide (SiO2)
mineral