Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Category
Mineral (Extraterrestrial)
Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.
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Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Crystalline Quartz (SiO2) with iron impurities
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Amethyst (Chevron/Dream Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Quartz (Crystalline Cluster)
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8 variant)
mineral
Amethyst
Amethyst (Purple Quartz); formula: SiO2 (Silicon Dioxide)
mineral
Herkimer Diamond
Quartz (Silicon Dioxide - SiO2)
mineral
Sugilite
KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)
mineral
Druzy Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Moonstone
Potassium aluminum silicate (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
mineral
Amethyst (Faceted)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Bloodstone
Heliotrope (Cryptocrystalline Quartz, SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2) with FeOx inclusions
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Amethyst Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Cinnabar in Matrix
Cinnabar (Mercury(II) sulfide, HgS)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
mineral
Amethyst (Rough Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)4O8
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (SiO2 with iron impurities)
mineral
Rose Quartz Druzy
Silicon Dioxide (SiO2)
mineral
Carnelian
Carnelian (SiO2) - Chalcedony variety
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite or Chlorite
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Mineral
Chalcedony in Matrix
Silicon Dioxide (SiO2)
mineral
Pink Himalayan Salt Rock (Halite)
Halite (Sodium Chloride, NaCl)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Beryl (Emerald or Aquamarine in Matrix)
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Sunstone
Aventurine Feldspar (composition: (Ca,Na)((Al,Si)2Si2O8))
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Dendritic Agate
Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2 + Mn/Fe)
mineral