Hematite
Iron(III) oxide (Fe2O3)
Mineral
Category
Mineral (Found In Igneous And Metamorphic Rocks)
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Quartz (Water-worn Pebble)
Silicon Dioxide (SiO2)
mineral
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Magnetite (potentially Hematite-rich)
Magnetite (Fe3O4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi₃O₈)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Citrine
SiO2 (Silicon Dioxide)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
mineral
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
mineral
Rose Quartz
Rose Quartz (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Graphite
Graphite (C)
mineral
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Almandine Fe3Al2(SiO4)3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Aventurine (likely Green Aventurine)
Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)
Mineral/Metamorphic Rock
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Mica-rich Schist fragment
Mica Schist
metamorphic
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral