Sedimentary (Chemically Precipitated) Or Metamorphic

Milky Quartz

Silicon Dioxide (SiO2)

Ocean Jasper or Orbicular Jasper

SiO2

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Coarse Sand or Fine Gravel

Detrital Sedimentary Fragments (mostly SiO2)

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

Quartz (Milky/Clear Variety)

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Green Calcite

Calcium Carbonate (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Blue Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Green Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartzite

Quartzite (SiO2)

Quartz (Milky/Clear)

Silicon Dioxide (SiO2)

Garnet in Host Rock

Garnet Group (A3B2(SiO4)3)

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite

Quartzite (SiO2)

River Cobble (Quartzite)

Quartzite (SiO2)

Quartz (Milk or Clear Variety)

Silicon Dioxide (SiO2)

White Quartz Pebble

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Blue Calcite

Calcium Carbonate (CaCO3)

Limonite pseudomorph after Pyrite

Goethite/Limonite FeO(OH)·nH2O

Orange Calcite

Calcium Carbonate (CaCO3)

White Calcite

Calcium Carbonate (CaCO3)

Calcite

Calcium Carbonate (CaCO3)

Blue Quartzite

Quartzite (SiO2 with inclusions)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Cobble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite (River Cobble)

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Quartzite (River Stone)

Quartzite (predominantly SiO2)

Quartzite Pebble

Quartzite (SiO2)