Mineral (Found In Igneous And Metamorphic Rocks)

Milky quartz specimen

Quartz (silicon dioxide, SiO₂), commonly massive or drusy quartz

Milky quartz (possibly iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Milky quartz pebble

Quartz (silicon dioxide, SiO₂), chalcedonic or massive variety

Feldspar

Feldspar (Orthoclase/Microcline)

Quartz Pebble

Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Quartz

Silicon Dioxide (SiO2)

Iron-stained milky quartz pebble

Quartz (SiO₂), commonly with iron-oxide staining

Milky quartz (massive quartz)

Quartz, silicon dioxide (SiO₂)

Moonstone (Feldspar)

Orthoclase or Oligoclase (KAlSi3O8)

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

Milky quartz in weathered host rock

Quartz, silicon dioxide (SiO₂), likely with iron-stained feldspar or altered matrix

Amethyst (Quartz variety)

Silicon Dioxide (SiO2) with iron impurities

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Moonstone

Orthoclase Feldspar (KAlSi3O8)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Pyrite

Iron Sulfide (FeS2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Magnetite (Lodestone)

Magnetite (Fe3O4)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz

SiO2 (Silicon Dioxide)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Milky quartz (likely weathered quartzite or quartz vein fragment)

Quartz, silicon dioxide (SiO₂)

Quartz (Citrine)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz cabochon turtle pendant

Quartz (SiO₂), likely a translucent variety with natural inclusions

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Milky quartz specimen

Quartz (silicon dioxide, SiO₂), likely massive milky quartz with possible iron-oxide staining and minor feldspar or mica

Polished honey-yellow quartz-like crystal

Quartz (SiO₂), possibly citrine or heat-treated amethyst

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky quartz

Quartz, silicon dioxide (SiO₂)

Milky quartz (possibly chalcedony)

Quartz, SiO₂; likely massive or cryptocrystalline quartz

Milky quartz

Quartz (silicon dioxide, SiO₂), massive variety

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)