Gold-bearing Quartz
Quartz (SiO2) with associated pyrite or native gold
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Gold-bearing Quartz
Quartz (SiO2) with associated pyrite or native gold
Milky Quartz
Silicon Dioxide (SiO2)
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
Agate and Chalcedony Assortment
Silicon Dioxide (SiO2)
Chert (potentially Flint or Mudstone)
Microcrystalline Quartz (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Agate
Cryptocrystalline Silicon Dioxide (SiO2)
Iron-Stained Quartzite
Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)
Red Quartzite (Ferruginous Quartz)
Quartzite (SiO2 with Fe2O3 inclusions)
Schist
Mica Schist (contains muscovite/biotite and quartz)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Quartzite Pebble
Quartzite (SiO2)
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
Serpentine
Serpentinite (group of minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Quartzite
Quartzite (SiO2)
Quartz Vein in Matrix
Silicon Dioxide (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite (with Quartz Veining)
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Gneiss
Gneissic Metamorphic Rock
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite (Ferruginous)
Recrystallized Quartz (SiO2) with Iron Oxide inclusions
Quartzite
Quartzite (SiO2)
Quartzite with Iron Inclusions
Metamorphic Quartzite (SiO2 with Fe2O3 trace impurities)
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
Quartz (vein quartz)
SiO2 (Silicon Dioxide)
Quartz
Silicon Dioxide (SiO₂)
Milky Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 + SiO2
Quartz (River-worn Pebble)
Quartz (SiO2)
Quartzite with Feldspar
Quartzite (mainly SiO2) with inclusions of Potassium Feldspar (KAlSi3O8)
Quartzite (Iron-stained)
Quartzite (SiO2 with Fe-oxides)
Quartzite
Quartzite (SiO2 silicon dioxide)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Chert / Flint
Chert (Cryptocrystalline Silica, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)