Mineral With Artificial Coating

Industrial slag (iron/copper smelting slag)

Multiphase vitreous metallurgical slag; commonly iron-silicate glass with metal-oxide and metallic inclusions

Banded Agate (Dyed)

Silicon Dioxide (SiO2) with impurities

Milky quartz-rich rock

Quartz (SiO₂), likely massive quartz with iron-oxide staining and minor feldspar or mica

Malachite-bearing rock

Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla or matrix minerals

Weathered iron-rich rock fragment

Provisional identification: limonite/goethite-rich material, likely an ironstone fragment

Tumbled blue-green chrysocolla (likely chrysocolla with quartz)

Chrysocolla, hydrated copper aluminum silicate; commonly intergrown with quartz, Cu₂H₂Si₂O₅(OH)₄

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Likely quartz crystal with iron-oxide staining

Quartz (SiO₂), possibly included or coated with limonite/goethite

Polished porphyritic volcanic pebble

Likely porphyritic basalt or andesite; exact identification requires a fresh surface and mineral tests

Chrysocolla-bearing quartz (likely chrysocolla in quartz)

Chrysocolla, hydrated copper aluminosilicate: approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O, intergrown with quartz (SiO₂)

Iron-rich rock, possibly limonite/goethite

Hydrated iron oxides/hydroxides, commonly limonite (FeO(OH)·nH₂O) with goethite (α-FeO(OH))

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Iron-stained quartz-rich rock, possibly quartzite or silicified breccia

Quartz (SiO₂)-dominant rock with iron-oxide minerals, chiefly hematite/goethite

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Pink Dyed Agate Geode Slice

Cryptocrystalline Quartz (SiO2)

Likely druzy quartz/agate specimen

Quartz (SiO₂), possibly iron-stained chalcedony or agate

Quartz with Iron Oxide Inclusions

Silicon Dioxide (SiO2) with Hematite/Limonite coatings

Aura Turquoise or Treated Turquoise Beads

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating

Red Sandstone

Quartzose Arenite

Iron-stained milky quartz

Quartz (SiO₂), with reddish-brown iron-oxide staining, likely hematite and/or goethite

Polished red stone, possibly dyed agate or jasper

Unidentified silica-rich material; potentially chalcedony (SiO₂)

Iron-stained quartz

Quartz (SiO₂), likely limonite/goethite-coated

Aggregate Concrete

Anthropogenic Conglomerate (Technosol)

Tumbled blue-green stone, likely chrysocolla or dyed chalcedony

Probable chrysocolla (hydrated copper aluminosilicate; variable composition), though appearance could also represent dyed chalcedony

Likely raw chalcopyrite or bornite specimen

Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)

Ferruginous Sandstone

Arenite with iron oxide cement (predominantly SiO2 with Fe2O3)

Carved labradorite animal figurine

Labradorite, calcium-rich plagioclase feldspar (approximately An50–70; (Ca,Na)(Al,Si)₄O₈)

Druzy agate pendant

Microcrystalline quartz (SiO₂), likely agate/chalcedony with druzy quartz crystals

Ferruginous Quartz

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Fire Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Polished malachite tower

Malachite, Cu₂CO₃(OH)₂ (basic copper carbonate)

Red Sandstone

Arenite (SiO2 with Fe2O3)

Copper-bearing quartz/rock fragment with attached mica

Chalcopyrite-bearing quartz or altered igneous rock; attached flake likely muscovite or biotite mica

Quartz-rich pegmatite with iron-stained quartz

Quartz (SiO₂) in granitic pegmatite, likely with feldspar and iron-oxide staining

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Iron-stained Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Likely quartz-bearing rock or mineral fragment

Probable quartz (SiO₂), possibly a weathered pegmatite or chalcedony fragment

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

Limonite (Ironstone Concretion)

Limonite: FeO(OH)·nH2O

Quartz with Iron Staining

Crystalline Silicon Dioxide (SiO2)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition