Mineral, Variety Of Quartz

Pyrite

Iron Disulfide (FeS2)

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Milky Quartz with Inclusions

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix

igneous

Jasper

Silicon dioxide (SiO2)

Quartz Vein (Iron-stained)

Silicon Dioxide (SiO2) with limonite/hematite staining

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Mineral

Smoky Quartz and Clear Quartz Geode

Silicon Dioxide (SiO2)

Satin Spar Selenite

Gypsum (CaSO4·2H2O)

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

River Quartz / Quartzite Pebbles

Quartzite (primarily Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Carnelian

Carnelian (Silicon Dioxide, SiO2)

Orange Quartz with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Tourmalinated Quartz

Quartz (SiO2) with included Tourmaline (complex borosilicate)

Mineral composite

Quartz (Quartzite Pebble)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Gold-bearing Quartz

Auriferous Quartz (SiO2 with Native Gold inclusion)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Mineral

Chert (Flint)

Chert (microcrystalline quartz)

Sedimentary or Metamorphic

Micaceous Sandstone or Quartzite

Sandstone (lithified quartz grains, often with mica) or Quartzite (metamorphosed sandstone)

Fluorite

Calcium Fluoride (CaF2)

Quartzite

Quartzite (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)