Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Category
Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Schist
Mica Schist (Variable chemistry, often rich in muscovite and biotite)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Gneiss
Gneiss
metamorphic
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Mineral
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Rough Sapphire
Corundum (Al2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Corundum (Sapphire/Ruby in Matrix)
Aluminium oxide (Al2O3)
mineral
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Schist (specifically Chlorite/Greenschist)
Chlorite Schist
metamorphic
Quartz (Milky/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Corundum (Ruby Variety)
Corundum (Al2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Mineral
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Quartz (likely milky/gray variety)
Quartz (SiO₂)
Mineral
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Basalt River Stone
Basalt
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral