Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Category
Metamorphic Or Igneous
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Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Lazulite
Magnesium Aluminum Phosphate Hydroxide (MgAl2(PO4)2(OH)2)
mineral
Unakite
Epidotized Granite
metamorphic
Yellow Jade
Jadeite or Nephrite (NaAlSi2O6 or Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Rutilated Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Porphyritic Basalt (with Augite Crystals)
Porphyritic Mafic Volcanic Rock (Fe-Mg Silicates)
igneous
Jade (likely Nephrite Jade based on appearance)
Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Mineral
Garnet (likely Almandine)
Almandine - Fe3Al2(SiO4)3
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Garnet Schist
Almandine Garnet in Schist (X3Al2(SiO4)3)
metamorphic
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Serpentine
Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)
metamorphic
Quartz with Chlorite or Hornblende inclusions
Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite within a foliated matrix)
metamorphic
Muscovite Mica (with Schist)
Muscovite - KAl2(AlSi3O10)(OH)2
metamorphic
Quartzite
Metamorphosed Sandstone (Mainly SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Slate with Quartz
Low-grade Metamorphic Slate with SiO2 inclusions
metamorphic
Quartzite River Rock
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Eclogite
Eclogite (Omphacite-Garnet rock)
metamorphic
Quartz (Clear/Milky)
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist (predominantly Muscovite/Biotite)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4
metamorphic
Garnet in Schist (Polished Tower)
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite pebble
Metamorphic rock dominated by SiO2 (Quartz)
metamorphic
Unakite (Epidotized Granite)
Unakite; primarily composed of Epidote (Ca2(Al,Fe)3(SiO4)3(OH)), Orthoclase (KAlSi3O8), and Quartz (SiO2)
Metamorphic
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Schist
Mica Schist (predominantly Muscovite or Biotite)
metamorphic
Greenschist / Migmatite
Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)
metamorphic
Epidote-bearing Granite (Unakite-like)
Epidotized Granite
igneous
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Garnet Schist
Almandine-Garnet Mica Schist
metamorphic