Sedimentary Or Metamorphic Derived

Quartz (Milky or Grainy Variety)

Silicon Dioxide (SiO2)

Quartz (Milky or Clear variety)

Silicon Dioxide (SiO2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Clear Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Yellow Calcite

Calcium Carbonate (CaCO3)

Pyrite (Fool's Gold) in Matrix

Iron Sulfide (FeS2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Green Calcite

Calcium Carbonate (CaCO3)

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)

Mica Schist with Quartz

Mica-Quartz Schist (Muscovite subclass)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Greywacke (Briarcliff Schist/Gneiss)

Manhattan Schist / Fordham Gneiss complex

White Marble

Recrystallized Calcite (CaCO3)

Almandine Garnet in Matrix

Almandine, Fe3Al2(SiO4)3

Gneiss

Gneiss

Gneiss

Gneiss (High-grade metamorphic rock)

Mica Schist with Garnet inclusions

Mica Schist (primarily Muscovite and Biotite - KAl2(AlSi3O10)(OH)2)

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)

Mica Schist

Muscovite Schist (KAl2(AlSi3O10)(OH)2)

Marble

Recrystallized Calcite (CaCO3)

Gneiss

Gneiss (High-grade metamorphic rock)

Jasper

Chalcedony (cryptocrystalline quartz), SiO2

Slate

Slate (Metamorphic Rock)

Gneiss

Gneissic Metamorphic Rock

Clear Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Pyrite in Matrix (likely Quartz or Schist matrix)

Iron Sulfide (FeS2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Rough Quartz (likely Rose or Smoky variant)

Silicon Dioxide (SiO2)