Quartzite Cobble
Quartzite (predominantly SiO2)
metamorphic
Category
Metamorphic Or Sedimentary
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite with inclusions
Quartzite (SiO2) with likely Feldspar or Iron oxide inclusions
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pink Quartz (Rose Quartz variant)
Silicon Dioxide (SiO2)
mineral
Quartzite Cobble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (mostly SiO2)
metamorphic
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Mixed Mineral Collection (with Titanium Aura Quartz)
Silicon Dioxide (SiO2) with metallic coatings and various silicates
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
gemstone
Agate
SiO2
Mineral/Gemstone
Banded Agate
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Jade (Jadeite or Nephrite)
Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Agate
Chalcedony (Microcrystalline Quartz) - SiO2
Mineral
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with tarnish
mineral
Sodalite
Sodalite Na8(Al6Si6O24)Cl2
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Tiger's Eye (dark/grey variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral