Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
Gneiss
Gneiss (Metamorphic Rock)
Rhodonite
Rhodonite (MnSiO3)
Yellow Sapphire or Citrine
Al2O3 (Corundum) or SiO2 (Quartz)
Green Tourmaline
Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
Greenstone with Epidote or Quartz veins
Metabasalt (Greenstone facies)
Yellow Calcite
Calcium Carbonate (CaCO3)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
Pink Rhodonite
Manganese Silicate (MnSiO3)
Almandine Garnet in Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Fuchsite Gneiss or Schist
Muscovite (variety Fuchsite) within Metamorphic Host Rock
Banded Gneiss
Gneiss (Metamorphic Rock)
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Ruby Fuchsite / Ruby in Fuchsite
Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Red Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Gold Mineral
Native Gold (Au)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Mica-rich Schist fragment
Mica Schist
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
Epidote and Quartz in Basalt
Epidote [Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)] in Metabasalt
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Quartz Mineral
Silicon Dioxide (SiO2)
Greenstone / Greenschist
Chlorite schist / Epidiorite
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
Rhodonite
Manganese Silicate (Mn, Fe, Mg, Ca)SiO3
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
Greenstone or Epidote-rich Metamorphic Rock
Chlorite/Epidote Schist or Greenstone
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2