Milky Quartz with Mineral Inclusions
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 →
Tumbled yellow quartz (likely citrine or iron-stained quartz)
Quartz, SiO₂; yellow color from trace iron or irradiation/heat-related coloration
mineral
Epidotite (Unakite-related)
Epidote-rich rock
metamorphic
Agate
Cryptocrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Garnet in Matrix
Almandine or Pyrope Garnet (X3Y2(SiO4)3) in Schist or Eclogite matrix
metamorphic
Biotite Schist
Biotite Gneissic Schist (K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Agate
Banded Chalcedony (SiO2)
mineral
Ruby (Rough/Raw)
Corundum (Al2O3:Cr)
mineral
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Agate (specifically a Thunderegg/Agate Nodule)
Cryptocrystalline Quartz (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Yellow Quartz / Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Agate
Chalcedony (SiO2)
mineral
Fluorite (Rainbow Fluorite Tower)
Fluorite (Calcium Fluoride, CaF2)
mineral
Calcite Geode
Calcium Carbonate (CaCO3)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Limonite / Brown Iron Ore
Hydrous Iron Oxide (FeO(OH)·nH2O)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Quartz Pebble (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Inclusion
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
River Pebble (Basalt)
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Green Kyanite
Kyanite (Al2SiO5)
mineral
Quartz Crystal (Citrine / Golden Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Blue Moss Agate / Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite
metamorphic