Metamorphic (Low Grade)

Schist (Biotite/Mica Schist)

Medium-grade regional metamorphic rock (rich in Phyllosilicates)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Gneiss

Gneissic Metamorphic Rock

Staurolite (Fairy Cross)

Staurolite (Fe2+2Al9Si4O23(OH))

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Greenschist

Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)

Dyed Quartzite

Tumbled Metamorphosed Quartz (SiO2) with artificial pigment

Pink Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Serpentinite

Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Ironstone Concretion / Limonite-stained Siltstone

Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)

Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Mica Schist

Mica Schist (Predominantly Muscovite/Biotite)

Phyllite

Phyllite

Gneiss (with Quartzite and Biotite)

Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)

Gneiss

Gneiss

Granitic Gneiss

Gneiss (Metamorphic rock of granitic composition)

Schist

Mica Schist

Gneiss

Gneiss

Banded Gneiss (with Quartz Vein)

Gneiss (Metamorphic rock of varying mineralogy)

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Greenschist

Greenschist (composed of Chlorite, Actinolite, and Epidote)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartz (possibly Citrine or Smoky Quartz variety)

Silicon Dioxide (SiO2)

Schist

Mica Schist

Chalcopyrite

Chalcopyrite (CuFeS2)

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (SiO2)

Jade (specifically Nephrite or Jadeite beads)

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

Serpentine

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

Serpentine

Antigorite / Lizardite / Chrysotile mix; (Mg, Fe)3Si2O5(OH)4

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Gneiss

Gneiss

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Gneiss (Cobble)

Gneiss

Gneiss (specifically Banded Gneiss)

Gneiss

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2Si6O18)

Biotite Schist

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