Pyrite-bearing Schist
Pyritic Quartz-Mica Schist with FeS2 inclusion
metamorphic
Category
Metamorphic Or Sedimentary
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Magnetite
Magnetite (Fe3O4)
mineral
Black Kyanite
Kyanite (Al2SiO5) with carbonaceous inclusions
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
metamorphic
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Zebra Rock / Zebra Marble
Banded Limestone-Marble Transition
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Mineral
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Schist
Mica Schist (Metamorphic Rock)
metamorphic
Garnet in Matrix (likely Almandine Garnet)
Almandine (Fe3Al2(SiO4)3)
metamorphic
Fuchsite Schist
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Quartzite with Hematite staining
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Greywacke (Briarcliff Schist/Gneiss)
Manhattan Schist / Fordham Gneiss complex
metamorphic
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral