Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Category
Sedimentary And Igneous (Mixed)
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
Learn about Sedimentary And Igneous (Mixed) in the encyclopedia
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Feldspathic Gneiss (Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Gneiss
Gneiss
metamorphic
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
K2 Stone
Azurite in Granite
igneous
Dalmatian Jasper
Peralkaline Quartz-Feldspar Porphyritic Rock (Dalmatian Stone)
igneous
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Sapphire (Raw)
Corundum (Al2O3)
mineral
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Oyster shell fragment
Ostreidae shell; primarily calcite (CaCO₃)
fossil
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Gemstone Sand (Mineral Assortment)
Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)
mineral
Magnetite (Loadstone candidate)
Iron(II,III) oxide (Fe3O4)
mineral
Pumice or Tufa/Travertine
Pumice (if igneous) or Calcareous Tufa (if sedimentary)
igneous/sedimentary
Hematite
Iron Oxide (Fe2O3)
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Dalmation Stone (Dyed)
Peralkaline rhyolite
igneous
River Stone (River Rock)
Smooth Clastic Sedimentary Rock
sedimentary
Clear quartz crystal
Quartz (silicon dioxide, SiO₂)
mineral
Dyed Quartz Pendant
Silicon Dioxide (SiO2) with artificial dye
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Dyed Agate
Silicon Dioxide (Chalcedony with artificial colorant), SiO2
gemstone
Tumbled Agate
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral