Mineral With Artificial Coating

Milky quartz-rich rock

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

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

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

Red Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - variety Quartzite

Native metallic specimen, possibly galena or a sulfide-rich ore fragment

Tentatively galena (lead sulfide, PbS), possibly mixed with iron/copper sulfides

Aura Turquoise or Treated Turquoise Beads

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

Dyed Blue Agate Slice

Chalcedony (Silicon Dioxide, SiO2)

Dyed Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

Drupa or Druzy Quartz on Geode Fragment

Crystalline Silicon Dioxide (SiO2)

Quartz geode with druzy quartz

Silica, SiO₂; microcrystalline chalcedony/quartz lining with iron-oxide staining

Quartz Druzy

Silicon Dioxide (SiO2)

Quartz with Iron Oxide Inclusions

Silicon Dioxide (SiO2) with Hematite/Limonite coatings

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

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

Dyed Agate Geode

Silicon Dioxide (SiO2) - Banded Chalcedony

Peridot

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Dyed Agate Slice

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Purple Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO2)

Fire Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Botryoidal calcite (likely calcite concretion)

Calcite, calcium carbonate (CaCO₃)

Red Sandstone

Arenite (Ferruginous Sandstone)

Titanium Aura Quartz (Aura Quartz)

Titanium-coated Silicon Dioxide (SiO2)

Polished malachite tower

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

Quartz-bearing geode or vuggy quartz specimen

Quartz, silicon dioxide (SiO₂), possibly with chalcedony and iron-oxide staining

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Limonite (Ironstone Concretion)

Limonite: FeO(OH)·nH2O

Iron-rich weathered pebble (likely limonite/goethite-bearing rock)

Limonite mixture, commonly dominated by goethite (FeO(OH)) and hematite (Fe₂O₃)

Druzy quartz geode slice

Quartz, SiO₂, commonly lining a chalcedony-rich geode

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 staining)

Carved labradorite animal figurine

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with Iron Oxide Inclusions

Dyed Agate

Cryptocrystalline variety of Silica (SiO2)

Dyed Blue Agate (Dragon Vein Agate)

Silicon Dioxide (SiO2) with artificial cobalt/organic dyes

Likely chalcopyrite-bearing sulfide ore

Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite

Agate

Banded Chalcedony (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

White quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Copper-bearing quartz/rock fragment with attached mica

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

Likely raw chalcopyrite or bornite specimen

Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)