Pyrite
Iron Pyrite (FeS₂)
Mineral
Category
Mineral On Igneous Rock
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Agate (Fortification Agate)
Banded Chalcedony (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fluorite
Fluoride (Calcium Fluoride - CaF2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Olivine (Peridot)
Olivine (Mg, Fe)2SiO4
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz Geode (partially formed)
Silicon Dioxide (SiO2)
mineral
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
mineral
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
sedimentary
Sandstone
Arenite
sedimentary
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
mineral
Sandstone (Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Red/Brown Variety)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Sandstone
Arenite (SiO2 based with quartz, feldspar, or lithic fragments)
sedimentary
Sandstone (Pebble/Cobble)
Arenite (primarily SiO2)
sedimentary
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mn/Mg)
mineral
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Schist
Mica Schist (Medium-grade Metamorphic Rock)
Metamorphic
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
sedimentary
Quartz with Muscovite Mica
SiO2 with KAl2(AlSi3O10)(OH)2
mineral group
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (often composed of Quartz, SiO2)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
sedimentary