Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral Or Sedimentary Rock (With Mineral Inclusions)
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Learn about Mineral Or Sedimentary Rock (With Mineral Inclusions) in the encyclopedia
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Orange chalcedony / iron-stained agate
Microcrystalline quartz (SiO₂), likely limonite/goethite-stained chalcedony
mineral
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 primary composition)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
gemstone
Granite
Granite (composed mainly of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Mica)
igneous
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Dalmatian Stone
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Basalt (Amygdaloidal)
Amygdaloidal Basalt
igneous
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
sedimentary
Sandstone Beach Pebble
Clastic Sandstone (SiO2 - Quartz-dominant)
sedimentary
Amygdaloidal Basalt
Vesicular Basalt with secondary mineral infilling (commonly Zeolites, Calcite, or Quartz)
igneous
Gneiss (specifically Biotite Gneiss)
Gneiss (high-grade metamorphic rock primarily composed of Silicates)
metamorphic
Gneiss with Quartz Veining
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Red Sandstone
Clastic Sedimentary Rock (typically contains Quartz and Iron Oxide)
sedimentary
Dalmatian Jasper
Microcrystalline Quartz with Arfvedsonite and Tourmaline inclusions
igneous
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Quartzite pebble with Mafic inclusions
Quartzite (SiO2)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
fossil
Red Sandstone
Arenite (predominantly SiO2 with Fe2O3)
sedimentary
Jasper
Silicon Dioxide (SiO2)
mineral
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Basalt with Olivine and Scoria
Extrusive Igneous Rock
igneous
Basalt with Calcite Veins
Extrusive Igneous Rock
igneous
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tumbled Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock)
Igneous
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Red Jasper
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
mineral
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Jasper and Basalt (Lake Superior Agate or Jasper Pebble)
Silicified rock / Cryptocrystalline quartz (SiO2) with basalt matrix
sedimentary
Chert (Nodule / Geode fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Pink Mimbres Agate / Plume Agate
Silicon dioxide (SiO2) with mineral inclusions
gemstone