Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Orthoclase Feldspar (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Hematite

Hematite (Fe2O3)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Mixed (predominantly sedimentary and igneous)

River Rock (Glacial Cobbles)

Fluvial Alluvium (Mixed lithology including Quartzite, Basalt, and Granite)

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Red Garnet

Almandine Garnet (Fe3Al2(SiO4)3)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gold Nugget

Native Gold (Au)

Quartz (Milky/Crystalline)

Quartz (Silicon Dioxide, SiO2)

Greenschist

Greenschist (comprising Actinolite, Chlorite, and Epidote)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Gossan (Iron Hat)

Limonitic Gossan (Fe-oxide/hydroxide complex)

igneous

Caliche (also known as hardpan, calcrete, kankar)

Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.

Quartz

Silicon dioxide (SiO2)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz / Rock Crystal

Silicon Dioxide (SiO2)

Schist

Mica Schist

Ruby in Zoisite

Anyolite (Ruby in Zoisite)

Corundum (Ruby Variety)

Corundum (Al2O3)

Apatite

Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))

Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

igneous

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Gneiss (Granitic Gneiss)

Gneiss