Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
mineral
Category
Mineral (Evaporite)
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
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Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
sedimentary
Amethyst (Tumbled)
Silicon Dioxide (SiO2) with iron impurities
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Ocean Jasper
Orbicular Jasper/Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Quartz
Quartz (Silicon Dioxide) with Iron Inclusion, SiO2
mineral
Gold-bearing Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Dragon Blood Jasper (Epidote with Piedmontite or Quartz)
Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
metamorphic
Amazonite
Microcline (KAlSi3O8)
mineral
Tiger's Eye
Silicon Dioxide (SiO2) with iron oxide inclusions
Mineral
Lapis Lazuli
Lapis Lazuli (Complex silicate mineral mixture primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Quartz Geode (Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Epidosite
Epidosite (consisting primarily of Epidote Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz SiO2)
metamorphic
Amethyst
Silicon dioxide / Violet Quartz (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz (Milky/Crystal Variety)
Silicon Dioxide (SiO2)
mineral
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Citrine (likely Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (SiO2)
mineral
Geode with Quartz and Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Gold Ore in Quartz
Auriferous Quartz (Gold: Au; Quartz: SiO2)
Mineral
Ocean Jasper
Orbicular Jasper / Chalcedony (SiO2)
Mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 with iron impurities)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with various inclusions
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Black Tourmaline in Quartz
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)
igneous