Metamorphic (Low Grade)

Gneiss

Gneiss (High-grade metamorphic rock)

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2) with Iron Oxide impurities

Pyrite

Iron Disulfide (FeS2)

Jade (Nephrite and Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2; Jadeite: NaAlSi2O6

Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Greenstone / Serpentinite

Antigorite/Lizardite series (Mg,Fe)3Si2O5(OH)4

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Pyrite-rich Ore

Pyrite (FeS2) with secondary minerals

Pyrite

Iron Sulfide (FeS2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Jadeite (variety of Jade)

Jadeite, NaAlSi₂O₆

Garnet in Schist

Almandine Garnet in Mica-Schist (Fe3Al2(SiO4)3)

Gneiss

High-grade Metamorphic Gneiss

Siltstone

Siltstone (primarily SiO2 with Al2O3 and Fe2O3)

Biotite Schist

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

Fairy Stone (Staurolite)

Staurolite (Fe2+2Al9Si4O22(OH)2)

Carnelian

Carnelian (SiO2 with iron oxide impurities)

Schist

Mica Schist (Composition typically involves Muscovite, Biotite, Quartz, and Feldspar)

Biotite Mica in Host Rock

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

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2 mixed with SiO2)

Serpentine

Serpentine subgroup (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Serpentine

Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Unakite

Epidotized Granite

Garnet Schist

Almandine-Garnet Schist

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn)2-3(Si, Al, Fe)2O5(OH)4

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Gneiss

Gneiss (Metamorphic high-grade)

Gneiss

High-grade Metamorphic Gneiss

Prehnite with Epidote inclusions

Prehnite: Ca2Al(AlSi3O10)(OH)2; Epidote: Ca2(Al,Fe)3(SiO4)3(OH)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Greenstone / Diorite

Intermediate plutonic igneous rock

Seraphinite

Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.

Garnet-Bearing Schist

Almandine Garnet Schist

Kyanite (Blue or Blue-Grey)

Kyanite (Al2SiO5)

Serpentinite

Serpentinite (complex silicate of magnesium, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)