Smoky Quartz
Smoky Quartz (SiO2)
mineral
Category
Mineral (Found In Igneous And Metamorphic Rocks)
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Amethyst and Ruby in Zoisite
Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)
mineral and metamorphic rock
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Metagabbro / Epidote Gneiss
Epidote bearing Hornblende Gneiss
metamorphic
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Black Star Diopside (beads)
Diopside (CaMgSi2O6) - a member of the pyroxene group
Mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Graphite
Graphite (C)
mineral
Greenschist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Unidentifiable Rock Fragment
Uncertain
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Ruby (Pink to Red Corundum)
Al2O3 (Corundum with Chromium impurities)
mineral
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Smoky Quartz (Tumbled)
Smoky Quartz (SiO2 - Silicon Dioxide)
mineral
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Mineral
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
sedimentary
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
metamorphic
Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Gneiss (Pebble)
Gneiss
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
sedimentary
Banded Agate
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Amazonite
K(AlSi3O8) - Microcline variant
mineral
Gneiss
Gneiss
metamorphic
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (Variety of Quartz)