Igneous, Sedimentary, And Metamorphic

Gneiss

Gneissic Metamorphic Rock

Gneiss

Metamorphic Gneiss

Hematite

Hematite (Fe2O3)

Quartz (likely Rose or Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Quartzite / Iron-stained Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Smoky/Milky)

Silicon Dioxide (SiO2)

Golden Calcite

Calcium Carbonate (CaCO3)

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz with inclusions

SiO2

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Honey Calcite

Calcium Carbonate (CaCO3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz fragment

Quartz (silicon dioxide, SiO₂), likely milky or smoky quartz

Quartz (Milk or Clear Variety)

Silicon Dioxide (SiO2)

Milky Quartz Pebbles

Silicon Dioxide (SiO2)

Quartz (White/Milky)

Silicon Dioxide (SiO2)

Magnetite / Ironstone Pebble

Magnetite (Fe3O4)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

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.)

Blue Calcite

Calcium Carbonate (CaCO3)

Small white mineral fragment

Indeterminate; possibly quartz, calcite, or feldspar

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz pebble

Quartz (Silicon dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Blue Quartz

Silicon Dioxide (SiO2) with microscopic inclusions

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)