Pyrite
Iron Sulfide (FeS2)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Azurite and Malachite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
Red Porphyry
Porphyritic Andesite or Rhyolite
Hematite
Iron Oxide (Fe2O3)
Raw smoky quartz with dark mineral inclusions
Quartz (SiO₂), likely smoky quartz; dark inclusions may be chlorite, tourmaline, or iron/manganese oxides
Red Jasper
Jasper (SiO2) - Silicon Dioxide with Hematic impurities
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
Hematite
Hematite (Fe2O3)
Magnetite
Magnetite (Fe3O4)
Quartz Pebble
Silicon Dioxide (SiO2)
White Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Tumbled White Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Calcite (with iron oxide staining)
Calcium Carbonate (CaCO3)
Yellow Chalcedony (likely Carnelian or Agate)
Silicon dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Amethyst and Calcite collection
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Colorless Quartz (Rhinestone)
Silicon Dioxide (SiO2)
White Chalcedony (Agate)
Silicon Dioxide (SiO2)
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
Graphite
Graphite (C)
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
Quartz (Milky Variant)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Magnetite / Hematite rich ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
Flint
Sedimentary cryptocrystalline quartz (SiO2)
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
Quartz or possibly Jasper/Chert. Looks like a tumbled or water-worn stone.
SiO2 (Silicon Dioxide)