Mineral (Tectosilicate)

Ammonite fossil

Ammonoidea; likely a polished small ammonite, possibly Cleoniceras

Banded metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss, possibly migmatitic

Weathered quartz-bearing rock, possibly granite or gneiss

Indeterminate; likely quartz–feldspar–mica aggregate, possibly granitic gneiss

Shark Tooth Fossil

Chondrichthyes fossil

Gneiss

Banded orthogneiss or paragneiss, typically quartz–feldspar–mica bearing

Turtle Stone / Septarian Nodule (Fragment)

Septarian Concretion (Calcite, Aragonite, and Limestone)

Amygdaloidal Basalt with Secondary Minerals

Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)

Native Copper

Native Copper (Cu)

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Green serpentine or nephrite-like stone

Serpentinite, chiefly serpentine-group minerals; exact identification would require testing

Polished serpentine (likely bowenite)

Serpentine-group minerals, chiefly antigorite; bowenite is a nickel-rich translucent variety

Bauxite

Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)

Shattuckite (Blue Quartz/Jasper Matrix)

Shattuckite (Copper Silicate Hydroxide - Cu5(SiO3)4(OH)2)

Felsic Drill Core (likely Gneiss or Granite)

Felsic Metamorphic Rock (Gneissic profile)

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Kunzite

Spodumene (LiAlSi2O6)

Epidote with Magnetite/Hematite inclusions

Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides

Purpurite

Manganese Iron Phosphate, Mn3+(PO4)

Chrysocolla

Cu2-xAlx(H2O)n(H2Si2O5)5 · nH2O (Hydrated copper aluminum silicate)

Druzy Quartz on Ironstone

Silicon Dioxide (SiO2) on Limonitic Ironstone

Gneiss

Gneiss

Schist

Metamorphic Rock (Mica Schist)

Amygdaloidal Basalt

Amygdaloidal Basalt (with secondary mineral infilling)

Sandstone

Arenite (SiO2 + various cementing minerals)

Iron-rich mineral fragment, possibly limonite/goethite

Limonite (hydrated iron oxides; commonly goethite, FeO(OH), with hematite)

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Sphalerite with Galena and Calcite / Quartz display specimens

Zinc Iron Sulfide (Zn,Fe)S with Quartz (SiO2) / Aquamarine / Fluorite

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Sandstone

Arenite (SiO2 primarily)

Limonite (Ironstone)

FeO(OH)qn H2O

Limonite (Iron Ore)

Limonite (̑FeO(OH)·nH₂O)

Pyrite

Iron Sulfide (FeS2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Sandstone

Arenite (SiO2 principal)

Unknown dark mineral fragment

Indeterminate; possibly a dark silicate mineral or slag-like geological fragment

Likely weathered metallic mineral or slag fragment

Indeterminate; possibly iron-rich sulfide/oxide material or industrial slag

Banded gneiss

Foliated silicate rock, typically quartz–feldspar–mica gneiss

Polished serpentine (likely bowenite/antigorite)

Serpentine-group minerals, chiefly antigorite or lizardite; approximate formula Mg₃Si₂O₅(OH)₄

Sandstone (Ferruginous)

Arenite (Fe2O3 staining)

Goldstone (Brown)

Aventurine glass

Milky Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)