Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Category
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Dyed Quartz / Rose Quartz Imitation
Silicon Dioxide (SiO2) with artificial pigment
Eudialyte
Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)
Aventurine (Green Quartz)
Quartz with Fuchsite inclusions (SiO2 with K(Al,Cr)2(AlSi3O10)(OH)2)
Greenschist
Greenschist (Chlorite Schist)
Prase or Green Quartz
Silicon Dioxide (SiO2 with actinolite or chlorite inclusions)
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
Garnet Gneiss
Gneiss containing almandine-pyrope garnet
Gossan
Ferruginous gossan (Iron-rich capping)
Quartz (Iron-Stained or Milky Quartz)
Silicon Dioxide (SiO2)
Granite (Micro-specimen)
Plutonic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
Red Garnet
Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)
Limonite (Iron Ore)
Limonite (an FeO(OH)·nH2O mineraloid, not a true mineral due to variable composition)
Nephrite (a form of Jade)
Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Limonite-pseudomorph after Pyrite (Prophecy Stone)
Goethite and Limonite secondary minerals (FeO(OH)·nH2O) replacing Pyrite (FeS2)
Sodalite Syenite (popularly known as Yooperlite)
Sodalite-rich Syenite (composed of alkali feldspar and sodalite)
Pegmatite (with Quartz and Feldspar)
Granitic Pegmatite
Amber
Succinates
Quartz
Silicon dioxide (SiO2)
Quartz (Chert/Quartzite variant)
Silicon Dioxide (SiO2)
Limonite or Ironstone Nodule
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz fragment
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Black Obsidian
Volcanic Glass (predominantly SiO2)
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz fragment
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Quartz
Silicon Dioxide (SiO2)
Quartzite with inclusions or a banded chert
Quartzite or Chert
Quartz Crystal on Matrix
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
N/A (Non-Geological Object)
Quartz (Microcrystalline Fragment)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)