Quartz (milky quartz variety)
Quartz (SiO₂)
Mineral
Category
Sedimentary And Metamorphic Minerals
Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.
Petrified Wood
Silicified wood, primarily composed of Quartz (SiO2)
Mineral, often found in sedimentary deposits
Schist
Mica Schist (primarily composed of quartz, feldspar, and mica)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral
Chakra Stone Bracelet (mixed gemstones)
Multi-mineral/Gemstone assembly (primarily Quartz variety beads)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
sedimentary
Pyrite (on host rock)
Iron Sulfide (FeS2)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Milky Quartz (with Chlorite/Mineral Inclusions)
Silicon Dioxide (SiO2)
mineral
Tiger's Eye
Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite
Mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Fairy Stone (Staurolite)
Staurolite (Fe2+2Al9Si4O22(OH)2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
mineral
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Blue Sapphire (in a faceted jewelry setting)
Corundum (Al2O3) with trace Iron and Titanium
mineral
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn+2,Fe+2,Mg,Ca)SiO3
mineral
Smoky Quartz (Faceted Beads)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartzite with Quartz Vein
Quartzite (primarily SiO2)
metamorphic
Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidote and Quartz)
metamorphic
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Quartz (Druzy) in host rock
SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)
Mineral
Quartzite with Iron Inclusions
Quartzite (largely SiO2) with Hematite/Limonite staining (Fe2O3)
metamorphic
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
mineral
Quartz (Milky and Smoky variety)
Silicon Dioxide (SiO2)
mineral
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.
Sedimentary rock
Bornite
Bornite (Cu5FeS4)
mineral
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
mineral