Quartz

Milky Quartz

Silicon Dioxide (SiO2)

Rutilated Quartz

Quartz with Rutile inclusions (SiO2 with TiO2 inclusions)

Clear quartz crystal sphere

Quartz (silicon dioxide, SiO₂)

Quartz Vein in Host Rock

Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)

Gold Ore in Quartz

Auriferous Quartz (Gold: Au; Quartz: SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz with Iron Staining

Silicon dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Quartz Vein in Matrix

Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Likely quartz-rich rock fragment

Quartz (SiO₂), possibly iron-stained quartz or quartzite

Quartz Pebble (Geode Nodules / Stream-Rounded Quartz)

Silicon Dioxide (SiO2)

Quartz-rich metamorphic rock, likely quartzite or quartz-veined schist

Quartz (SiO₂) with mica/chlorite-rich schistose matrix; possibly minor feldspar and sulfides

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Actinolite or Tourmaline inclusions

Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Pyrite on Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz in Host Rock

Silicon Dioxide (SiO2) in Rhyolite or Granite matrix

Titanium Quartz (Rough)

Titanium-included Silicon Dioxide (SiO2 + Ti)

Milky Quartz in Shale

Silicon Dioxide (SiO2) in sedimentary host rock

Fluorite with Quartz coating

Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Quartz (pebble)

Quartz (SiO₂)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz-rich iron-stained rock

Massive to drusy quartz (SiO₂) with iron-oxide coatings, likely limonite/goethite

Quartz with Pyrite and Iron Staining

Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2)

Quartz (Peach / Hematoid Quartz)

Silicon Dioxide (SiO2)

Tumbled brown quartz crystal (likely smoky quartz or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz with Mica Schist

Quartz-Mica Schist / Pegmatitic Quartz

Chrysocolla in Quartz

Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O in Quartz (SiO2)

Quartz (Milky or Cloudy)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)