Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
Category
Browse mineral (metamorphic pseudomorph) specimens identified by the Rock Identifier community.
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Black Tourmaline
Schorl (Sodium iron aluminum boron silicate hydroxide)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Sodalite
Na8(Al6Si6O24)Cl2
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
Garnet-bearing gneiss
Quartz–feldspar–mica gneiss with iron-rich garnet (commonly almandine)
Schist (Biotite Schist)
Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)
Gneiss
Gneiss
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Likely weathered gneiss
Foliated metamorphic rock, commonly quartz–feldspar–mica gneiss
Epidote in Matrix (Dragon Stone variant)
Epidote with Quartz/Feldspar (Ca2(Al,Fe)3(SiO4)3(OH))
Mixed tumbled gemstone collection
Varied minerals, likely including amethyst, sodalite/lapis lazuli, quartzite or aventurine, jasper, and agate/chalcedony
Mystic Topaz (Treated Quartz or Topaz)
Silicate Mineral (SiO2 or Al2SiO4(F,OH)2) with Titanium coating
Magnetite with Pyroxene
Magnetite (Fe3O4) in Mafic Igneous Matrix
Orange Quartzite / Aventurine
Silicon Dioxide (SiO2)
Serpentine Jade (New Jade/Olive Jade)
Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite
Quartz crystals on matrix
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)
Chakra Tumbled Stone Set
Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)
Tumbled Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
Zebra Jasper
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss
Slate
Foliated Metamorphic Rock (primarily clay minerals and micas)
White Quartz
Silicon Dioxide (SiO2)
Black Slate
Slate (Metamorphic Rock)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Quartz with Graphite/Tourmaline Inclusions
Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2 (Actinolite-Tremolite series)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Prehnite with Epidote and Quartz
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Iceland Spar (Optical Calcite)
Calcite (CaCO3)