Mineral (Native Element)

Blue Celestite

Celestine (Strontium Sulfate, SrSO4)

Copper-bearing rock, likely native copper in a weathered matrix

Native copper (Cu), tentatively with copper sulfide/oxide minerals

Pyrite (likely)

Pyrite, iron sulfide (FeS₂)

Raw fluorite-bearing rock, possibly fluorite in quartz/calcite matrix

Fluorite (CaF₂), with likely quartz (SiO₂) and/or calcite (CaCO₃) gangue

Lepidolite

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

Arfvedsonite in Matrix

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]

Likely native silver

Native silver (Ag); identification is provisional from the photo

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Raw Topaz (or Smoky Quartz)

Al2SiO4(F,OH)2 / Silicon Dioxide (SiO2)

Turquoise (Rough)

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

Polished blue agate geode slice

Chalcedony (microcrystalline quartz), SiO₂, with possible quartz/drusy lining and iron-oxide coloration

Lepidolite with Tourmaline in Quartz Matrix

K(Li,Al)3(Si,Al)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz)

Native gold nugget

Gold (Au), commonly with minor silver or copper

Lepidolite

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

Copper-bearing Basalt with Epidote and Quartz

Native copper in basalt amygdaloidal matrix

Pyrite Cube

Iron Sulfide (FeS2)

Lepidolite

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

Native silver specimen

Silver (Ag), probably crystallized native silver with associated gangue

Chrysocolla in Cuprite / Mixed Copper Ore

Hydrated copper silicate and copper(I) oxide, (Cu,Al)2H2Si2O5(OH)4·nH2O and Cu2O

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Cuprite

Cuprite (Copper(I) oxide, Cu2O)

Quartz-rich pegmatitic rock (likely quartz–feldspar–mica specimen)

Granitic pegmatite; mainly quartz (SiO₂), feldspar, and dark mica/amphibole

Rough Diamond

Diamond (Native Carbon, C)

Rough Diamond

Diamond (Native Carbon, C)

Rough Diamond

Diamond (Native Carbon, C)

Gold Ore (Lode Gold)

Native Gold (Au) in Matrix

Diamond

Diamond (Native Carbon, C)

Gold Ore

Native Gold in Quartz (Au)

Diamond (in jewelry setting)

Diamond (Native Carbon, C)

Gold Ore

Native Gold (Au) in Matrix

Iron-rich sulfide ore (likely pyrite-bearing rock)

Likely pyrite (FeS₂) with dark host rock; exact identification is uncertain from the image alone.

Quartz-rich pegmatitic rock, possibly tourmaline-bearing granite

Granitic pegmatite; predominantly quartz (SiO₂), feldspar, and mica, with possible schorl tourmaline

Amygdaloidal Basalt

Extrusive mafic igneous rock with amygdules

Silver-colored mica schist

Muscovite–quartz schist, possibly with biotite

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

Likely pyrite (“fool’s gold”) fragment

Pyrite, FeS₂

Gold-bearing quartz vein in dark host rock

Native gold (Au) with quartz (SiO₂), likely in slate, schist, or altered volcanic rock

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Likely pyrite-bearing rock

Pyrite (FeS₂) in a dark host rock; exact identification is uncertain from the image

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown