Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Category
Mineral (Found In Igneous And Metamorphic Rocks)
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
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Ruby
Corundum (Al2O3 with Chromium traces)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Feldspar (likely Orthoclase or Plagioclase)
Tectosilicate Feldspar (KAlSi3O8 to (Ca,Na)(Al,Si)4O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Biotite in Host Matrix
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rose quartz
Quartz (silicon dioxide, SiO₂), pink variety
mineral
Hematite
Iron (III) Oxide (Fe2O3)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
gemstone
Sapphire
Corundum (Al2O3)
gemstone
Magnetite / Ironstone
Iron(II,III) oxide (Fe3O4)
mineral
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Blue Topaz
Al2SiO4(F,OH)2
gemstone
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Epidosite (Epidote-rich rock)
Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Graphite
Graphite (C)
mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Kaolinite (Kaolin)
Kaolinite (Al2Si2O5(OH)4)
mineral
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Faceted Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
gemstone
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
NaFe3+3Al6(BO3)3Si6O18(OH)4
mineral