Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Metal (Elemental Mineral)
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Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase
igneous
Milky Quartz Vein in Mafic Rock
Quartzite vein in Metabasalt (SiO2 base)
metamorphic
Iron Meteorite Fragment
Siderite (Geological term for iron meteorite class - Fe/Ni alloy)
igneous
Quartz Vein in Matrix
Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix
igneous
Serpentinite
Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
metamorphic
Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Epithermal Gold Ore (in Quartz/Rhyolite matrix)
Auriferous Quartz (Au + SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Sphalerite in Chalcedony (Crescent Carving)
Zinc Sulfide (ZnS) with Silicon Dioxide (SiO2)
mineral
Granite Boulder
Felsic Intrusive Igneous Rock
igneous
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Copper Bullion Round
Native Copper (refined), Cu
mineral
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Greenstone or Chlorite Schist
Greenschist / Chlorite schist
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Granite
Intrusive Igneous Rock
igneous
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Granite / Pegmatite with Quartz Vein
Granite (composed mainly of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)
igneous
Milky or Iron-Stained Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gold-bearing Quartz Vein in Mafic Rock
Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)
metamorphic
Diamond (set in jewelry)
Diamond (Carbon, C)
mineral
Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Granite
Granite (Intrusive Igneous Rock)
igneous
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Granite
Granite
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Not a geological specimen
N/A (man-made object)
N/A