Mineral (Processed Metal)

Gold Nugget

Gold (Au)

Mixed Mineral Collection (with Titanium Aura Quartz)

Silicon Dioxide (SiO2) with metallic coatings and various silicates

Slag Glass

Vitreous Silicate Residue

Opalite

Synthetic Silicon Dioxide (SiO2)

Quartz Vein in Host Rock (Gabbro or Basalt)

Silicon Dioxide (SiO2) with Mafic Silicates

Small yellow mineral specimen (possibly sulfur)

Unidentified; appearance alone is insufficient to confirm sulfur

Bauxite

Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Ferruginous Sandstone (ironstone)

Sandstone with iron oxide cement (limonite/hematite)

Gold

Native Gold (Au)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Gossan (Iron Hat) with Quartz and Chlorite

Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite

Mixed river pebbles, likely including quartz-rich rocks

Unidentified mixed lithologies; the pale pieces appear quartz- or feldspar-rich, but the image is insufficient for a specific identification

Cubic Zirconia and Synthetic Ruby Jewelry

Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)

Serpentinite

Serpentinite (complex silicate mineral group (Mg,Fe)3Si2O5(OH)4)

Native Silver Nugget

Silver (Ag)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Copper Ore (Malachite and Azurite stained rock)

Copper-bearing rock with secondary copper carbonates

Ferruginous Sandstone (Gozzan)

Iron-rich clastic sedimentary rock with Limonite/Goethite

Pale green translucent mineral fragment

Indeterminate; possibly fluorite, calcite, or glassy quartz

Crushed stone aggregate

Mixed lithic aggregate; individual fragments cannot be identified from the image

Gold-bearing Quartz

Auriferous Quartz (SiO2 with Native Gold inclusion)

Tumbled greenstone (likely serpentine-rich)

Greenstone; commonly metamorphosed mafic rock composed of actinolite/chlorite with epidote and albite

Limestone Concretion

Calcium Carbonate Concretion (CaCO3)

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Pallasite Meteorite

Pallasite (ST-class)

Gold Nugget

Native Gold (Au)

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Cullet (Slag Glass)

Amorphous Silica (SiO2) with various metal oxide colorants

Likely small metallic meteorite fragments

Unclassified iron or stony-iron meteorite; mineralogy cannot be confirmed from the image

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in Altered Host Rock

Dyed Cracked Agate

Silicon Dioxide (Quartz variety, SiO2)

Gold-bearing quartz vein rock (likely pyrite-rich quartzite)

Quartz (SiO₂) with iron sulfides, chiefly pyrite (FeS₂), possibly chalcopyrite (CuFeS₂); gold cannot be confirmed visually

Limonite-stained Quartz

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O) coatings

Chrysocolla-bearing copper ore

Chrysocolla (hydrated copper aluminum silicate), likely with malachite/azurite and copper sulfides

Native Copper

Native Copper (Cu)

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

Pyrite-bearing rock, likely quartz vein

Pyrite (FeS₂) in quartz-rich host rock