Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia
View all →
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chalcedony
Chalcedony (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite / Ca5(PO4)3F
mineral
Quartz (Float/Abraded)
Quartz (SiO₂)
Mineral
Sandstone (Greywacke)
Arenite / Wacke (SiO2 + varied clasts)
sedimentary
Fairy Stone (Staurolite Concretion)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Potassium Feldspar
K-Feldspar (KAlSi3O8)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Quartz (Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8Al6Si6O24Cl2
mineral
Prehnite with Epidote and Quartz
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Eclogite
Eclogite (composed primarily of Omphacite and Pyrope Garnet)
metamorphic
Sodalite in Matrix (often called Blue Marble or Sodalite-Syenite)
Sodalite-bearing Syenite / Na8Al6Si6O24Cl2 (Sodalite component)
igneous
Quartzite (Iron-stained)
Metamorphosed Quartz-rich Rock (SiO2)
metamorphic
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Muscovite Mica
Muscovite KAl2(AlSi3O10)(OH)2
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Wishing Stone (Basalt or Mudstone with Quartz/Calcite Veins)
Hydrothermally veined Basalt (SiO2/CaCO3 intrusions)
igneous or sedimentary
Unakite (polished/tumbled)
Unakite, a hydrothermally altered granite composed mainly of epidote, pink potassium feldspar (orthoclase/microcline), and quartz
metamorphic
Quartzite
Quartzite (SiO2 silicon dioxide)
metamorphic
Granite Quartz Blend (Pegmatite or Quartz-rich Granite)
Igneous rock composed primarily of SiO2 (Quartz) with KAlSi3O8 (Feldspar) and (K,Fe,Mg)3(Al,Si4O10)(OH)2 (Biotite)
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Schist
Metamorphic rock (Schist)
metamorphic
Chert (potentially Jasper/Common Opal mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone or Chalk
Calcium Carbonate (CaCO3)
sedimentary
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
metamorphic
Hematite Ball
Iron(III) oxide (Fe2O3)
mineral
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Almandine Garnet (weathered)
Almandine (Fe3Al2(SiO4)3)
mineral
Scoria
Extrusive Basaltic Scoria
igneous
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
mineral
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral