Smoky Quartz
Smoky Quartz (SiO2)
Mineral
Category
Metamorphic, Likely Sedimentary With Quartz Veins
Browse metamorphic, likely sedimentary with quartz veins specimens identified by the Rock Identifier community.
Strawberry Quartz (or Hematoid Quartz)
Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Gneiss
Gneiss
metamorphic
Titanium Quartz (Rough)
Titanium-included Silicon Dioxide (SiO2 + Ti)
mineral
Petrified Wood (Silicified Wood)
Silicified fossil wood (SiO2)
metamorphic
Gneiss
Gneiss
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral / Sedimentary occurrence
Citrine
SiO2 (Silicon Dioxide)
Mineral
Gold-Bearing River Sand
Auriferous Placer Sand (Au + various minerals like SiO2 and Fe3O4)
sedimentary
Quartz (Druzy or Geode fragment)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
metamorphic
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Red Quartzite / River Cobble
Quartzite (SiO2 with iron oxide impurities)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst and Hematite Bracelet
Amethyst (SiO2) and Hematite (Fe2O3)
mineral
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Aquamarine and clear quartz
Aquamarine (Be3Al2Si6O18), Quartz (SiO2)
Mineral
Calcite
Calcite (CaCO3)
Mineral
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Granite Pebble
Granite (Phaneritic Quartz-Feldspar intrusive rock)
igneous
Yellow Chert (Jasper)
Chalcedony (SiO2) with iron oxide inclusions
sedimentary
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
mineral
Druzy Quartz on Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
mineral
Granite Cobble
Felsic intrusive igneous rock
igneous
Quartz Pebble (with Mica or Iron staining)
Silicon Dioxide (SiO2)
mineral