Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
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Schorl (Black Tourmaline) in Quartz Matrix
Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)
mineral
Serpentine (Nephrite-like River Cobble)
Serpentinite (Hydrous Magnesium Iron Silicate)
metamorphic
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
mineral
Almandine Garnet in Schist Matrix
Almandine - Fe3Al2(SiO4)3
metamorphic
Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Banded Agate (Pink Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Botryoidal Chalcedony (Desert Rose / Grape Agate variant)
Silicon Dioxide (SiO2)
mineral
Diamond (or high-quality simulant like Cubic Zirconia)
Carbon (C) - Native Element
mineral
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide + Fe2O3 / FeO(OH))
mineral
Iolite
Cordierite (Magnesium iron aluminium silicate)
mineral
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Fluorite Tower
Calcium Fluoride (CaF2)
mineral
Diamond
C (Native Carbon)
gemstone
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt (Extrusive Igneous Rock)
igneous
Banded Iron Formation
Banded Iron Formation (BIF)
Sedimentary
Quartzite (Water-worn Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Jasper or Agate
Silicon dioxide (SiO2)
Mineral
Basalt
Basalt (SiO2 percentage between 45% and 52%)
igneous
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartz with Mica (Gneissic or Pegmatitic origin)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Anthracite Coal
Anthracite
metamorphic
Diamond
Natural Carbon (C)
mineral
Anthracite
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Diamond (in a Gold Jewelry Setting)
Carbon (C)
mineral
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
metamorphic
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Chert (Chalcedony nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Olivine (often within Peridotite)
Magnesium iron silicate, (Mg,Fe)2SiO4
mineral