Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
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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Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
White Moonstone (Scolicite or White Feldspar var. )
Lattice-structure Silicate (KAlSi3O8)
mineral
Banded Agate (Dyed)
Silicon Dioxide (SiO2) with impurities
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Blue Apatite
Fluorapatite / Apatite Group (Ca5(PO4)3(F,Cl,OH))
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Grey Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Garnet
Nesosilicate group (e.g., Almandine: Fe3Al2(SiO4)3)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Aquamarine
Beryl (Be₃Al₂Si‑₆O₁₈)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz with Mica (Muscovite/Biotite)
Silicon Dioxide (SiO2) with Phyllosilicate inclusions
mineral
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 with Fe2O3)
mineral
Black Tourmaline (Schorl)
NaFe3+3Al6(BO3)3Si6O18(OH)4
mineral
Mica / Muscovite or Biotite
Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)
mineral
Amazonite
Microcline (KAlSi3O8)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral