Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Organic (Geological Relative)
Browse organic (geological relative) specimens identified by the Rock Identifier community.
Carnelian
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Milky Quartz
Quartz (Silica / Silicon Dioxide, SiO2)
mineral
Obsidian
Volcanic Glass (Primary composition: SiO2 - Silicon Dioxide)
igneous
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Asphalt (Aggregate)
Bituminous macadam / Concrete Aggregate
sedimentary
Slate
Foliated low-grade metamorphic rock
metamorphic
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Greenschist (Chlorite Schist)
Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)
metamorphic
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Sedimentary
Clear/White Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Obsidian
Obsidian (volcanic glass), predominantly amorphous SiO₂
Igneous
Brown Jasper
Jasper (a cryptocrystalline variety of Quartz, SiO2)
Mineral, specifically a variety of Quartz
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Fluorite
Fluorite (CaF₂)
mineral
Agate
Chalcedony (SiO2)
mineral
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)
Metamorphic rock (for both Nephrite and Jadeite)
Fluorite
Calcium Fluoride (CaF2)
mineral
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Mahogany Obsidian
Obsidian (Volcanic Glass with Hematite/Magnetite inclusions)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pumice
Pumice (Vesicular Rhyolite/Andesite)
igneous
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Glaucophane-bearing Schist (Blueschist)
Blueschist (Glaucophane-Lawsonite Schist)
metamorphic
Obsidian
Volcanic glass (Mainly SiO2)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milk Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (likely a clear or rock crystal variety)
Quartz (SiO2 - Silicon Dioxide)
Mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral