Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mixed (Sedimentary, Igneous, And Metamorphic)
Browse mixed (sedimentary, igneous, and metamorphic) specimens identified by the Rock Identifier community.
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Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities and natural radiation influence)
mineral
Gneiss (Metamorphic Rock)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss
metamorphic
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist)
Quartz–feldspar–mica rock; exact identification requires testing
metamorphic
Citrine Quartz
Crystalline Quartz (SiO2) with iron impurities
mineral
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Rose Quartz
Rose Quartz (SiO2)
Mineral
Quartz (Water-worn pebble)
Silicon Dioxide (SiO2)
mineral
Milky quartz (likely weathered quartzite or quartz vein fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Quartz (Citrine)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Banded Orthogneiss or Paragneiss (Quartz-Feldspathic Gneiss)
metamorphic
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Mineral
Amethyst (Ametrine or Bicolor Quartz variant)
Silicon Dioxide (SiO2) with iron impurities
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Milky quartz (rough quartz crystal)
Quartz, silicon dioxide (SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Sea Glass-like Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Banded gneiss pebble
Biotite–quartz–feldspar gneiss (composition variable)
metamorphic
Gneiss
Gneiss
metamorphic
Likely biotite-bearing metamorphic rock (schist or gneiss)
Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Greenstone (Metabalt)
Chlorite schist / Epidiorite
metamorphic
Gneiss
Gneiss
metamorphic
Citrine
Silicon Dioxide (SiO2) - Yellow Quartz variety
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Dark metamorphic rock, likely biotite schist or gneiss
Quartz–feldspar–biotite metamorphic rock; exact identification requires a fresh surface and testing
metamorphic
Tumbled milky quartz (likely quartz pebble)
Quartz, silicon dioxide (SiO₂)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral