Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Minerals
Browse minerals specimens identified by the Rock Identifier community.
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Quartz River Pebble with Algae
Silicon Dioxide (SiO2) with organic biofilm
metamorphic or igneous
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Pink/Orange Variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Gravel fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)
metamorphic
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Glauconitic Sandstone
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 in Quartz Sandstone
sedimentary
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Fossilized Bone Fragment
Permineralized Skeletal Element (Likely Vertebrate)
sedimentary
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granitic Gneiss
Gneiss (Polymetamorphic Granitic Gneiss)
metamorphic
Ferruginous Sandstone
Sandstone with Iron Oxide (Limonite/Goethite)
sedimentary
Fossilized Sand Tiger Shark Tooth
Carcharias taurus / Striatolamia macrota (mineralized as Hydroxylapatite/Francolite)
sedimentary (fossil)
Granite
Granite (Felsic Plutonic Rock)
igneous
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Aura Quartz
Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)
mineral
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Quartz (Druzy) on Matrix
Silicon Dioxide (SiO2)
mineral
Black Onyx
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartzite with Mica
Metamorphic Quartzite (SiO2 + Mica phyllosilicates)
metamorphic
Snowflake Obsidian
Vitreous Silica with Spherulite inclusions (Amorphous SiO2)
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Tufa
Calcareous Tufa (Calcium carbonate, CaCO3)
sedimentary
Chert Geode or Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with iron and organic inclusions
sedimentary
Septarian (Dragon Stone)
Septarian Concretion (SiO2 + CaCO3)
sedimentary
Muscovite Schist
Muscovite (KAl2(AlSi3O10)(OH)2) in Schist
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Glauconite
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
mineral