Mineral (Native Element)

Amygdaloidal Basalt

Amygdaloidal Basalt (extrusive volcanic rock)

Native gold (gold nugget)

Native gold, Au; commonly alloyed with silver and copper

Gold (10K Alloy)

Aurum (Au) with alloying metals (Cu, Ag, Zn)

Schist (likely mica schist)

Mica schist, commonly quartz–muscovite/biotite schist

Celestite (Celestine)

Strontium sulfate (SrSO4)

Rose quartz (likely)

Quartz, silicon dioxide (SiO₂), commonly massive rather than visibly crystalline

Sulfur crystals on iron-rich matrix

Native sulfur (S₈), likely with iron oxides/hydroxides such as limonite

Pyrite-bearing quartz specimen

Pyrite (FeS₂) with quartz (SiO₂), possibly minor chalcopyrite or iron oxides

Malachite-stained copper-bearing rock

Malachite, Cu₂CO₃(OH)₂, likely coating or alteration of copper sulfide/host rock

Iron-rich sulfide-bearing rock, likely pyrite-rich shale or limonite-goethite specimen

Likely pyrite (FeS₂) with oxidation products goethite/limonite (FeO(OH)·nH₂O), possibly in shale or quartz matrix

Turquoise in Matrix

Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O

Native gold specimen

Native gold (Au), likely with quartz or sulfide matrix

Azurite with native copper

Azurite (Cu₃(CO₃)₂(OH)₂) with native copper (Cu)

Native gold nuggets

Gold (Au), usually with minor silver and copper

Silver (Native or Alloyed)

Ag (Argentum)

Diamond

Carbon (C)

Diamond

Carbon (C)

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

Likely polished copper-bearing stone or copper nugget

Uncertain from the image; possibly native copper (Cu) or copper-stained rock

Turquoise (Green variety)

Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Turquoise (possible Dyed Magnesite/Howlite)

CuAl6(PO4)4(OH)8·4H2O

Diamond

Carbon (C)

Turquoise

CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Gold-Bearing Quartz

Silicon Dioxide with Native Gold (SiO2 + Au)

Gold-bearing quartz (probable sulfide-bearing quartz)

Quartz, SiO₂, with possible pyrite or mica inclusions

Malachite specimen

Malachite, Cu₂CO₃(OH)₂

Quartz with Gold

Silicon Dioxide with Native Gold (SiO2 + Au)

Tiny metallic mineral fragment, possibly native gold

Native gold (Au), unconfirmed; could also be pyrite or chalcopyrite

Gold bullion bars

Native gold (Au), likely cast or refined metal

Native gold-bearing quartz/rock fragment

Native gold (Au), likely in quartz or iron-oxide matrix

Weathered gold-bearing quartz/ironstone (possible gold nugget)

Native gold (Au), if metallic gold is present, in quartz–iron-oxide matrix

Bismuth Crystal

Bismuth (Bi)

Quartz (specifically Milky Quartz or Quartzite)

Silicon Dioxide (SiO2)

Turquoise

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

Iron-rich weathered rock, likely limonite-bearing basalt or ironstone

Fine-grained mafic rock with iron oxides/hydroxides; probable basalt altered to limonite/goethite

Quartz-rich gold-bearing rock (possible quartz vein ore)

Hydrothermal quartz vein; predominantly SiO₂, with possible iron oxides/sulfides and minor native gold

Weathered quartz-rich rock, possibly gold-bearing quartz

Milky quartz with iron-oxide staining; exact host rock is uncertain from the image

Malachite-rich copper ore

Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla and oxidized copper minerals

Pyrite-bearing quartz vein fragment

Quartz (SiO₂) with pyrite (FeS₂), possibly minor chalcopyrite

Red Jasper

Silicon dioxide (SiO2) with Iron inclusions

Agate (Thunderegg segment)

Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony