Biotite mica schist (probable)
Mica schist, dominated by biotite mica (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) with quartz and feldspar
metamorphic
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Metamorphic Or Sedimentary Depending On Local Grade
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Biotite schist with quartz–feldspar-rich inclusion
Mica schist, primarily biotite mica (黒雲母) with quartz and feldspar
metamorphic
Weathered greenstone (likely serpentinite or altered basalt)
Serpentinite-group rock, commonly dominated by serpentine minerals (antigorite/lizardite); exact identification requires testing
metamorphic
Crystalline limestone (marble-like calcite rock)
Calcite, CaCO₃; likely recrystallized limestone (marble)
metamorphic
Emerald In Matrix
Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium
mineral
Clear Quartz (Faceted)
SiO2 - Silicon Dioxide
gemstone
Copper-Bearing Sulfide Ore (likely Chalcopyrite or Bornite)
Chalcopyrite (CuFeS2) or Bornite (Cu5FeS4) in host rock
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Dragon Blood Jasper
SiO2
mineral
Schist
Mica Schist
metamorphic
Gravel and River Pebbles
Unconsolidated rock fragments / Detrital sediment
sedimentary
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
mineral (impactite)
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Apatite
Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)
mineral
Libyan Desert Glass
Libyan Desert Glass (Impactite)
meteorite
Libyan Desert Glass
Natural Silica Glass (SiO2 with minor iron and titanium)
mineraloid
Quartzite
Quartzite (SiO2)
metamorphic
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Kyanite (Blue and Green varieties)
Kyanite (Al₂SiO₅)
mineral
Ironstone Concretion (Limonite/Goethite)
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
White Buffalo Turquoise (or Howlite/Magnesite)
Calcite/Dolomite or Magnesite with Chert/Quartz inclusions
gemstone
Schist
Mica schist, typically muscovite–biotite quartz schist
metamorphic
Chert in Limestone (or Flint Nodule)
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Blue-gray metamorphic rock, likely slate or phyllite
Slate/phyllite; chiefly quartz, muscovite/illite, chlorite, and minor feldspar
metamorphic
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Metamorphic/Igneous (Hydrothermal)
Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
metamorphic
Weathered porphyritic volcanic rock
Likely porphyritic andesite or basalt; exact identification requires a fresh surface and testing
igneous
Beach Quartz Pebble
Quartz (Silica - SiO2)
mineral
Libyan Desert Glass
Libyan Desert Glass (Impactite / High-silica Lechatelierite)
mineral
Likely red jasper or iron-rich chert fragments
Microcrystalline quartz (SiO₂), colored by hematite/goethite; exact identification requires testing
mineral
Travertine
Travertine (a terrestrial form of Limestone, CaCO3)
sedimentary
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
metamorphic
Muscovite schist
Mica schist, chiefly muscovite mica (KAl₂(AlSi₃O₁₀)(OH)₂) with quartz and feldspar
metamorphic
Citrine Quartz Crystal Cluster
Silicon Dioxide (SiO2) with iron impurities
mineral
Larimar
Pectolite (NaCa2Si3O8(OH))
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
White Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
gemstone
Weathered schist or phyllite
Mica-rich pelitic metamorphic rock; commonly quartz–muscovite/biotite schist or phyllite
metamorphic