Quartzite
Quartzite (predominantly SiO2)
Category
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Quartzite
Quartzite (predominantly SiO2)
Cubic Zirconia (Faceted)
Zirconium dioxide (ZrO2)
Pink Orthoclase Feldspar with Dendrites
Orthoclase (KAlSi3O8) with Manganese Oxide dendrites
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Kimberlite
Kimberlite (Group I or II)
Garnet
Almandine (Fe3Al2(SiO4)3)
Eclogite
Eclogite
Fluorite (likely Fluorite on Quartz/Matrix)
Calcium Fluoride (CaF2)
White Quartz Sphere
Silicon Dioxide (SiO2)
Serpentinite
Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
Diamond (Emerald Cut)
Carbon (C)
Diamond (or Diamond Simulant like Cubic Zirconia)
Carbon (C) - if Diamond; Zirconium dioxide (ZrO2) - if Cubic Zirconia
Diamond in Gold Setting
Diamond (C - pure carbon)
Serpentinite
Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Rose Quartz (or Quartzite)
Silicon Dioxide (SiO2)
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)
Pumice
Pumicite
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Olivine (Peridotite/Dunite)
Olivine (Mg,Fe)2SiO4 within Peridotite
Diamond
Carbon (C)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
Red Quartzite (Strawberry Quartz)
Quartzite (SiO2 with iron oxide inclusions)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Raw Diamond
Diamond (pure Carbon, C)
Bixbyite on Rhyolite
Bixbyite (Mn2+,Fe3+)2O3
Porphyritic Basalt or Diabase with Plagioclase Phenocrysts
Porphyritic Basalt or Diabase; Mineral: Plagioclase Feldspar
Chert / Jasper
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
Sandstone with Algae Growth
Arenite with Chlorophyta/Lichen
Quartzite
Quartzite (primarily SiO2)
Quartz (Iron-stained or Ferruginous Quartz)
Silicon Dioxide (SiO2)
Crushed Limestone
Sedimentary Calcium Carbonate (CaCO3)
Quartz (Milky Quartz with Iron Staining)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Pegmatite (with smoky quartz and tourmaline/biotite)
Pegmatitic Granite
Granitic Pegmatite
Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)