Mixed: Igneous And Sedimentary

Quartz

Quartz (SiO2 - Silicon Dioxide)

Citrine (Heat-treated Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Limonite/Hematite inclusions

Moonstone (specifically White Moonstone/Adularia)

Potassium aluminum silicate ((K,Na)AlSi3O8)

Citrine

Silicon Dioxide (SiO2)

Hypersthene

Hypersthene (formula: (Mg,Fe)SiO3)

Smoky Quartz

Silicon Dioxide (SiO2)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Quartz (Yellow/Citrine variety)

Crystalline Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite / KAl2(AlSi3O10)(OH)2

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Quartz Crystal (specifically Rock Crystal)

Silicon Dioxide (SiO2)

Unakite

Unakite Epidosite (Granite with epidote and orthoclase)

Tourmaline (likely Schorl)

Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4

Quartz

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Quartz (SiO2) in Mafic or Sedimentary Matrix

Fluorite

Calcium Fluoride (CaF2)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Green Fluorite

Calcium Fluoride (CaF2)

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

Gneiss

High-grade Metamorphic Gneiss

Gneiss

High-grade foliated metamorphic rock

Banded Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Chalcedony (Botryoidal Agate)

Silicon Dioxide (SiO2)

Carnelian

Carnelian (Chalcedony / SiO2)

Green Chalcedony (likely Green Agate or Chrysoprase)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Sandstone (Ferruginous)

Arenite (Fe-bearing Clastic Sedimentary Rock)

Milky Quartz

Silicon Dioxide (SiO2)

Limestone (Concretionary or Tufa)

Calcium Carbonate (CaCO3)

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Sandstone (Weathered Cobble)

Clastic Sedimentary Rock (primarily SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Leopard Skin Jasper

Rhyolite (Silicon Dioxide with impurities), SiO2

Granite

Granite (composed primarily of Quartz SiO2, Alkali Feldspar KAlSi3O8, and Plagioclase Feldspar)