Metamorphic Rock (Composed Of Multiple Minerals)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Vein Quartz)

Silicon Dioxide (SiO2)

Granodiorite

Granodiorite (phaneritic intrusive igneous rock)

Smoky Quartz

Silicon Dioxide (SiO2)

Greenstone

Greenschist / Meta-basalt

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock including secondary mineral infills)

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))

Sandstone

Arenite

Quartz / Vein Quartz

Quartz (Silicon Dioxide, SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (with secondary mineral infilling)

Quartz Pebble (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Ferruginous Sandstone

Ferruginous Clastic Sedimentary Rock

Granite

Granite (Felsic Plutonic Rock)

Slate with Quartz

Low-grade Metamorphic Slate with SiO2 inclusions

Serpentine (variety: Serpentine Rock)

Antigorite, Lizardite, or Chrysotile; formula generally (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Labradorite

Labradorite, (Ca, Na)(Al, Si)4O8

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2)

Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

White Marble

Recrystallized Calcite (CaCO3)

Milky Quartz (or Iron-Stained Quartz)

Quartz (Silicon Dioxide, SiO2)

Basalt with Amygdules

Amygdaloidal Basalt

Ironstone Concretion (Moqui Marble variety)

Ferruginous Sandstone Concretion

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Sandstone (Ferruginous)

Arenite with Iron oxide staining (SiO2 with Fe2O3)

White Chalcedony (likely Common Opal or Milky Quartz)

Silicon Dioxide (SiO2)

Quartz with Iron Oxide Monzonite or Sandstone contact

Quartz (SiO2) with Limonite/Hematite staining

Unakite

Unakite (Epidote-Feldspar rock)

Red Siltstone (or Red Shale)

Clastic Sedimentary Rock (Composition: primarily Quartz, Clay minerals, and Hematite Fe2O3)

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Milky Quartz (among River Rock)

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Greenstone / Greenschist

Chlorite schist / Meta-basalt

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite and Calcite inclusions

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)