Mineral Specimen

Quartz crystal cluster in matrix

Silicon dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Banded Iron Formation (Fragment)

Banded Iron Formation (BIF)

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)

Chalcopyrite

Copper iron sulfide (CuFeS2)

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2

Epidote

Ca2(Al,Fe)3(SiO4)3(OH)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Polished garnet bead (likely almandine)

Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)

Chrysocolla-rich copper ore

Chrysocolla, a hydrated copper aluminosilicate (approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O), possibly mixed with malachite or turquoise-group minerals

Fossil oyster shell

Fossilized oyster (Bivalvia; exact genus and age cannot be determined from the image)

Quartz Crystal

Silicon Dioxide (SiO2)

Mottled purple-and-cream rough mineral specimen, likely lepidolite-bearing pegmatite

Probably lepidolite (lithium mica; K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂) with light-colored quartz or feldspar; identification uncertain from image

Polished copper-bearing mineral specimen, likely malachite-rich copper ore

Malachite, Cu₂CO₃(OH)₂, possibly mixed with chrysocolla or limonite

Weathered, iron-stained bedrock (rock type uncertain)

Unidentified bedrock; orange-brown staining is likely iron oxides such as goethite and hematite

Likely native silver-bearing ore or silver-colored metallic mineral specimen

Uncertain from the photo; possible native silver (Ag) with iron-oxide-stained host rock

Polished blue-green metallic mineral specimen, likely bornite (“peacock ore”)

Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish

Smoky quartz

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Unable to identify - Image contains non-geological items

Quartz

Silicon Dioxide (SiO2)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

Epidote

Ca2(Al,Fe)3(SiO4)3(OH)

Green Fluorite

Calcium Fluoride (CaF2)

Mica

Muscovite / Biotite (Phyllosilicate group)

Pyrite

Iron Sulfide (FeS2)

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Likely weathered metallic meteorite fragment

Unconfirmed; possibly an iron-nickel meteorite, mainly kamacite and taenite

Carved Stone Turtle

Carved Soapstone and Quartz

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Feldspar

KAlSi3O8 to NaAlSi3O8