Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)
Category
Browse mixed (igneous, sedimentary, metamorphic, and minerals) specimens identified by the Rock Identifier community.
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
Fluorite (Blue)
Calcium Fluoride (CaF2)
Ruby in Fuchsite
Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)
Basalt
Basalt
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Lapis Lazuli
Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Mica Schist
Mica Schist
Nuummite
Nuummite (complex silicate composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
Lapis Lazuli
Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite
Lapis Lazuli
Sodalite-rich metamorphic rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Stichtite in Serpentine (Atlantisite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
Limonite (Yellow Ochre)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Amazonite (Amazon Stone)
Tectosilicate Microcline (KAlSi3O8)
Amethyst
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Amethyst
SiO2 (Silicon Dioxide) - Purple variety of Crystalline Quartz
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Citrine Quartz Crystal Cluster
Silicon Dioxide (SiO2) with iron impurities
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
Granite (Phaneritic Igneous Rock)
Granite
Granite
Phaneritic Plutonic Felsic Rock
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
Olivine (Peridot)
Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
Blue Quartzite
Quartzite with inclusions (SiO2)
Hematite
Hematite (Fe2O3)
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Fossil Coral
Cnidaria Anthozoa (Fossilized)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Granite
Intrusive igneous rock (Acidic)
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
Quartz with Tourmaline and Iron Staining
Silicon Dioxide (SiO2) with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
Quartz Veined Rock (Likely Graywacke or Quartzite)
Silicon Dioxide (SiO2) veins in Metasedimentary matrix
Granite
Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)
Green Aventurine
Aventurine (variety of Quartz - SiO2)
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions