Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Scoria (Lava Rock)
Vesicular Basalt / Scoria
Amethyst (Faceted)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Jasper (Cream/Yellow variety)
Silicon Dioxide (SiO2) with impurities
Pink Granite
Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Yellow Chert or Jasper
Microcrystalline Quartz (SiO2)
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
Conglomerate
Conglomerate (SiO2, Al2O3, Fe2O3, CaCo3)
Orange Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Granite
Granite (a phaneritic intrusive igneous rock)
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
Moss Agate
Chalcedony (SiO2) with dendritic inclusions of Manganese or Iron oxide
Green Calcite
Calcium Carbonate (CaCO3)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Red Aventurine
Aventurine Quartz (SiO2 + Hematite/Goethite)
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
Quartzite
Quartzite (primarily SiO2)
Emerald in Host Rock
Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium
Basalt
Mafic Igneous Rock
Turquoise with Pyrite
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Red Jasper
Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)
Fossiliferous Sedimentary Rock (Coquina/Limestone)
Fossiliferous Calcarenite / Bioclastic Limestone
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Schist
Mica Schist (contains muscovite/biotite and quartz)
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
Agate (Moss or Dendritic Agate)
Chalcedony (Silicon Dioxide, SiO2)
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Chert (Nodule)
Silicon Dioxide (SiO2)
Milky Quartz (Ferruginous variety)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)