Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Peridot
Olivine (specifically, the gem-quality variety forsterite, (Mg,Fe)2SiO4)
Mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Fancy Jasper (Bloodstone variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (Lithic Wacke)
sedimentary
Lace Agate (specifically Red Lace Agate)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
Mineral
Citrine
Silicon Dioxide (SiO2) - Yellow Quartz variety
mineral
Amazonite
Amazonite (KAlSi3O8); a green variety of Microcline feldspar
mineral
Carnelian
Chalcedony (SiO2) with iron oxide impurities
mineral
Rough Ruby (Corundum) in Zoisite Matrix
Al2O3 (Aluminum Oxide) with Ca2Al3(SiO4)3(OH)
mineral
Chert (Flint variety)
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Raw Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Citrine
Citrine (Silicon Dioxide - SiO2)
mineral
Carnelian
Silicon dioxide (SiO2) with Iron Oxide impurities (Fe2O3)
mineral
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety
Mineral
Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate / Chalcedony
mineral
Desert Rose
Gypsum (variety Selenite) or Barite, CaSO4·2H2O
mineral
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Amethyst Geode (Thunderegg)
Silicon Dioxide (SiO2) - Quartz Variety: Amethyst
mineral
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
mineral
Blue Chalcedony Geode (with Quartz Druzy)
Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz
mineral
Amethyst
Amethyst (Quartz variety), Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony); SiO2 (Silicon Dioxide)
mineral
Citrine
Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety
mineral
Sardonyx Cameo
Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz
Mineral
Carnelian
Carnelian (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Amazonite
K(AlSi3O8) - Microcline (Lead-bearing variety)
mineral
Banded Agate (specifically Sardonyx)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
mineral
Desert Rose
Gypsum (variety Selenite) or Barite, CaSO4·2H2O
mineral
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) - Variety of Chalcedony/Jasper
mineral
Pearl
Calcium carbonate (CaCO3) - Aragonite/Calcite variety
mineral
Amazonite
Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)
mineral
Hypersthene
Hypersthene (Enstatite variety), (Mg,Fe)SiO3
Mineral
Dyed Blue Agate (Slab)
Agate (Variety of Chalcedony/Microcrystalline Quartz), SiO2
mineral
Green Aventurine
Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)
Mineral
Agate (specifically, likely a geode slice or nodule)
Agate (a variety of Chalcedony, with chemical formula SiO2)
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic