Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Sedimentary Or Igneous (Host Environment)
Browse sedimentary or igneous (host environment) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Igneous (Host Environment) in the encyclopedia
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Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
igneous/sedimentary
Chert (Yellow/Tan Variety)
Chert (SiO2)
sedimentary
Clear Quartz
Silicon dioxide (SiO2)
mineral
Yellow Quartzite (River Pebble)
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
mineral
Ruby (Pinkish-Red)
Corundum (Al2O3 with Chromium trace)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Fluorite Geode
Calcium Fluoride (CaF2)
mineral
Pink Chalcedony (Agate/Jasper blend)
Silicon Dioxide (SiO₂)
mineral
Chert (varietal: Flint Pitted Pebble)
Cryptocrystalline Quartz (SiO2)
sedimentary
Garnet Gneiss
Garnetiferous quartzo-feldspathic gneiss
metamorphic
Milky Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Druzy Quartz on Matrix (Chert/Limestone)
Silicon Dioxide (SiO2) with Carbonate host rock
sedimentary
Ruby (in jewelry)
Corundum (Al2O3 with Chromium traces)
mineral
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Citrine-colored or Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
sedimentary
Quartz pebble with a conchoidal chip
Silicon dioxide (SiO2)
mineral
Geode (Unopened)
Quartz/Chalcedony concretion
sedimentary
Quartz (Smoky/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Jasper mix in host rock)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
mineral
Quartz-veined Metamorphic Rock (Wishing Stone)
Quartz-veined Metamorphic/Igneous Host Rock with Quartz Veinlets
metamorphic
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz grains)
sedimentary
Quartz Geode / Druzy Quartz Node
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Carnelian Chalcedony (SiO2 with Iron Oxide impurities)
mineral
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
gemstone
Weathered iron-rich concretion or limonite-bearing rock
Limonite/goethite-rich concretion; limonite is an iron-oxide/hydroxide mixture, commonly dominated by goethite (FeO(OH))
sedimentary
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Chalcedony (Grey/White Agate)
Silicon Dioxide (SiO₂)
mineral
Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Quartz Veined Siltstone or Graywacke
Clastic Sedimentary Rock with Quartz (SiO2) veining
sedimentary
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Beryl (likely Pink/Morganite variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Garnet
Garnet (X3Y2(SiO4)3)
mineral
Banded Gneiss with Quartz Vein
Gneiss containing SiO2 (Quartz) intrusion
metamorphic