Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
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Green Quartz (Prasiolite variant or Aventurine)
Silicon Dioxide (SiO2)
mineral
Granite (Dioritic or Hornblende-rich)
Phaneritic Plutonic Felsic to Intermediate Igneous Rock
igneous
Red Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Leopard Skin Jasper
Rhyolite (Silicon Dioxide with impurities), SiO2
igneous
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase Feldspar)
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Gneiss
Gneiss
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Milky Quartz
Silicon dioxide (SiO2)
mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Greenschist
Chlorite Schist
metamorphic
Quartz Druze on Matrix (Geode Fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Gneiss (High-Grade Metamorphic Rock)
Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Schist
Mica Schist (Variable chemistry, often rich in muscovite and biotite)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Carnelian
Carnelian (SiO2, Silicon Dioxide with Iron Oxide impurities)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Gneiss
Gneiss
metamorphic
Greenstone / Glauconitic Siltstone
Metabasalt or Glauconite-rich Sedimentary Rock
metamorphic or sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Quartz
Silicon Dioxide (SiO2)
Mineral
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian (Red Agate)
Chalcedony (SiO2 with Iron Oxide impurities)
mineral
Blue Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral