Sedimentary Or Metamorphic (Base Substrate)

Brown Chert

Cryptocrystalline Silica (SiO2)

Chert

Chert (Microcrystalline Quartz, SiO2)

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2) matrix

Magnetite

Magnetite (Iron(II,III) oxide, Fe3O4)

Aquamarine

Beryl (Be3Al2Si6O18)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Greenschist

Greenschist facies metamorphic rock

Glauconitic Sandstone

Glauconitic arenite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Fossilized Coral (Petoskey-style)

Hexagonaria percarinata (Fossilized Rugose Coral)

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Fossiliferous Limestone

CaCO3 (principally Calcite or Aragonite)

Chert (Quartz Variety)

Chert (Silicon Dioxide, SiO2)

Banded Iron Formation (BIF)

Magnetite-Hematite Chert (Banded Iron Formation)

Conglomerate

Conglomerate (clastic sedimentary rock)

Puddingstone (Conglomerate)

Conglomerate (clastic sedimentary rock)

Gneiss

Gneissic Metamorphic Rock

Blue Kyanite

Kyanite (Al2SiO5)

Coquina / Fossiliferous Limestone

Calcite-rich Bioclastic Sedimentary Rock (CaCO3)

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Galena

Lead(II) sulfide (PbS)

Quartz (likely Rose or Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Fragment)

Silicon Dioxide (SiO2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Quartz (Small Pebble)

Silicon Dioxide (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Emerald

Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Rhodochrosite

Manganese carbonate (MnCO3)

Collection of Minerals and Ores

Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz (Carved Merkaba)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz (Milk Quartz / Massive Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

Quartz / Milky Quartz

Silicon Dioxide (SiO2)