Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
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Red aventurine
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
metamorphic
Quartzite (River Cobble)
Quartzite (dominant mineral: Quatrz, SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Charoite
Charoite (Complex silicate mineral rock)
metamorphic
Quartzite
Quartzite (Primary mineral: Quartz, SiO2)
metamorphic
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Emerald (Beryl)
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Moonstone
Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Peach Moonstone
Potassium Aluminum Silicate, KAlSi3O8
mineral
Quartz (likely Rose or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Pyritic Quartzite
Metequartzite with FeS2 (Pyrite) inclusions
metamorphic
Rhodonite with Manganese Oxides
Rhodonite (Mn,Fe,Mg,Ca)SiO3
metamorphic
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orange Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Schist (Crystalline metamorphic rock)
metamorphic
Slate
Slate (foliated metamorphic rock)
metamorphic
Quartz
Silicon dioxide (SiO2)
Mineral
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with phyllosilicate inclusions
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral