Quartz vein in metamorphic rock
Crystalline Silicon Dioxide (SiO2) in Host Rock
metamorphic
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Learn about Mineral (Processed Metal) in the encyclopedia
View all →
Granite Pebble with Quartz Vein
Granite (Plutonic Igneous Rock) with Quartz (SiO2)
igneous
Granite
Intrusive Igneous Rock
igneous
Milky Quartz in Gneiss
Quartzite / Foliated Gneiss containing SiO2
metamorphic
Porphyritic Basalt or Porphyritic Andesite
Porphyritic Extrusive Igneous Rock
igneous
Rose Quartz and Lepidolite in Pegmatite
Crystalline Silicon Dioxide (SiO2) with Lithium-rich Mica (K(Li,Al)3(Al,Si)4O10(F,OH)2)
igneous
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Chromite
Chromite (FeCr2O4)
mineral
Jasper
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Faceted brown gemstone in a silver-colored setting
Likely smoky quartz (SiO₂), but the photo cannot reliably distinguish it from other brown gems or glass
gemstone
Biotite-rich mica schist
Mica schist, dominated by biotite mica (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂), with probable quartz and feldspar
metamorphic
Sapphire in a ring
Corundum (Al2O3)
mineral
Bull Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Bauxite
Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)
sedimentary
Copper
Native Copper (Cu)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Native Copper
Native Copper (Cu)
mineral
Multi-stone gemstone ring
Likely faceted blue topaz or synthetic blue stone with clear stones, possibly cubic zirconia or diamond; metal setting appears silver-colored alloy
gemstone
Native gold in quartz (probable)
Gold (Au), with quartz (SiO₂) matrix
mineral
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Iron Meteorite / Chondrite (Possible)
Extraterrestrial stony-iron or chondritic meteorite
meteorite
Silicon
Crystalline Silicon (Si)
mineral
Bauxite (Laterite Clay)
Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))
sedimentary
Granite
Intrusive Igneous Rock (Mainly Quartz, Feldspar, and Mica)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Galena-bearing ore (probable)
Galena, lead sulfide (PbS), possibly with sphalerite or metallic sulfides
mineral
Galena
Lead sulfide (PbS)
mineral
Porphyritic basalt or weathered volcanic rock
Basalt, likely plagioclase–pyroxene rock with possible olivine; exact identification requires testing
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Native Copper
Native Copper (Cu)
mineral
Quartz and Iron Oxide
Quartz (Silicon Dioxide, SiO2) with possible Limonite/Hematite inclusions
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide
mineral
Gold Nugget
Native Gold (Au)
mineral
Industrial Diamond (Bort or Boart)
Diamond (pure Carbon, C)
mineral
Blue gemstone ring, likely sapphire
Corundum, Al₂O₃ (probable blue sapphire); surrounding stones may be diamonds or simulants
gemstone
Polished druzy quartz specimen
Quartz (SiO₂), likely druzy quartz with possible blue chalcedony or inclusions
mineral
Quartz Vein in Host Rock
Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Beryl (Emerald Variety)
Beryllium Aluminum Silicate (Be3Al2(SiO3)6)
mineral
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral