Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral_rock
Browse mineral_rock specimens identified by the Rock Identifier community.
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Orbicular Jasper (Ocean Jasper)
Silicon Dioxide (SiO2) with various inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Banded Gneiss
Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)
metamorphic
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Quartzite with Dendritic Manganese Oxide Inclusions
Metamorphic Quartzite (SiO2 with Mn-oxides)
metamorphic
Quartz (Cut and Polished Sphere)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Garnet Schist
Almandine Garnet in Micaceous Schist
metamorphic
Vesicular Basalt
Vesicular Basalt (Aphanitic-Vesicular Mafic Rock)
igneous
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Ferruginous Sandstone
Arenite with Iron-oxide cement
sedimentary
Yellow Sapphire
Corundum (Al2O3)
gemstone
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky to Clear)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Obsidian
Extrusive igneous volcanic glass (rich in SiO2)
igneous
Quartz (Milky or Cloudy)
Silicon Dioxide (SiO2)
mineral
Chrysocolla (in Host Rock)
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary/igneous host
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
mineral
Mixed Rock and Mineral Collection
Various geological specimens
igneous, sedimentary, and metamorphic
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone
Laterite/limonite-rich material; commonly dominated by goethite (FeO(OH)) and hydrated iron oxides
sedimentary
Quartz Druzy (Geode Fragment)
Silicon Dioxide (SiO2)
mineral
Pebble / Sandstone / Siltstone
Sedimentary Rock (Quartz Sandstone / Siltstone)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with hematite or goethite inclusions
mineral
Blue-gray metamorphic rock, likely gneiss or schist
Quartz–feldspar–mica assemblage; exact identification requires testing
metamorphic
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Chrysocolla in Quartz
Hydrated copper phyllosilicate with silicon dioxide (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O + SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Dyed Agate
Chalcedony (SiO2)
Mineral
Likely milky quartz with iron-oxide inclusions
Quartz, silicon dioxide (SiO₂)
mineral
Shale
Argillaceous Rock
sedimentary
Conglomerate
Conglomerate rock
sedimentary