Mineral (Native Element)

Gold-bearing quartz vein specimen

Native gold (Au) in quartz (SiO₂), likely with iron-oxide staining

Copper and Quartz beads

Native Copper (Cu) and Crystalline Quartz (SiO2)

Mica-rich pegmatite (likely muscovite-bearing granite)

Pegmatite; chiefly quartz (SiO₂), feldspar, and muscovite mica

Sunstone

Plagioclase Feldspar (Na,Ca)(Si,Al)4O8

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Quartz-rich pegmatite specimen

Pegmatite composed mainly of quartz (SiO₂), feldspar, and mica, with possible tourmaline or garnet inclusions

Gold-bearing quartz sulfide specimen

Native gold (Au) with quartz (SiO₂), likely associated with iron sulfides such as pyrite

Native silver fragment (probable)

Silver, Ag; possibly silver-bearing sulfide or plated metal

Raw dark metallic mineral specimen, possibly native gold-bearing quartz or sulfide ore

Uncertain from image; possible pyrite/chalcopyrite-bearing quartz or gold-bearing sulfide matrix

Quartz-rich pegmatite fragment

Granitic pegmatite, chiefly quartz (SiO₂) with feldspar and mica

Native copper (probable copper-rich mineral specimen)

Copper, Cu; possibly mixed with cuprite, malachite, and iron-oxide alteration minerals

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Blue lace agate (tumbled)

Microcrystalline quartz, SiO₂ (chalcedony variety)

Malachite-bearing matrix specimen

Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla and host rock

Rounded greenish-gold rock or mineral pebble

Indeterminate; possibly serpentine-rich stone, weathered sulfide, or iron-stained metamorphic rock

Milky Quartz

Silicon Dioxide (SiO2)

Probable weathered sulfide-bearing rock

Indeterminate; possibly pyrite- or chalcopyrite-bearing matrix

Sunstone (Feldspar)

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Turquoise or Chrysocolla (Inlaid Jewelry)

Hydrated copper aluminum phosphate / Hydrated copper phyllosilicate

Sunstone

Oligoclase (Feldspar variety)

Indeterminate metallic mineral fragments

Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock

Copper ore, likely native copper in a host rock

Native copper (Cu), possibly with cuprite/iron-oxide matrix

Pegmatitic quartz–feldspar rock with dark mica

Granitic pegmatite; quartz (SiO₂), feldspar, and biotite mica

Yellow Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Graphite

Graphite (Native Carbon, C)

Rough Diamond

Diamond (Native Carbon), C

Rough Diamond

Diamond (Native Carbon, C)

Copper Bullion Round

Native Copper (refined), Cu

Graphite

Graphite (Native Carbon, C)

Obsidian

Obsidian (Volcanic Glass; SiO2 content > 70%)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Graphite

Graphite (Carbon, C)

Gold-bearing quartz specimen

Native gold (Au) in quartz, possibly with iron sulfides

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Native Copper in Basalt

Cu

Diamond (Faceted)

Carbon (C) - Diamond

Obsidian

Obsidian (Volcanic Glass, SiO2 dominated)

Celestine (or Celestite)

Strontium sulfate (SrSO4)

Sandstone (Quartzite Pebble)

Arenite / Metamorphosed Sandstone (SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)