Sedimentary Or Metamorphic (Base Substrate)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Conglomeratic sandstone / breccia-like gravel rock

Polymictic conglomerate (possibly lithified gravel or concrete-like natural conglomerate)

Garnet Schist

Almandine Garnet in Mica Schist

Greenschist

Greenschist (Chlorite-Epidote-Actinolite Schist)

Green Opal

Hydrated Silica (SiO2·nH2O)

Schist

Mica Schist

Flaked stone projectile point

Likely worked chert or fine-grained silicified shale; exact lithology cannot be confirmed from the image

Yellow-green serpentine (likely)

Serpentine-group phyllosilicate, commonly lizardite or antigorite; approximate formula Mg₃Si₂O₅(OH)₄

Amethyst and Hematite Bracelet

Amethyst (SiO2) and Hematite (Fe2O3)

Schist (Biotite Schist)

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

Weathered greenish-brown rock, likely serpentinized ultramafic rock

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), possibly with olivine, pyroxene, magnetite, or carbonate

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Mica Schist

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

Biotite-bearing gneiss (probable)

Foliated metamorphic rock composed chiefly of quartz, feldspar, and dark biotite/amphibole

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Milky Quartz (Tumbled/Water-worn)

Silicon Dioxide (SiO2)

Epidote

Epidote - Ca2(Al,Fe)3(SiO4)3(OH)

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Mica Schist

Mica Schist

Mica Schist with Quartz

Crystalline Schist (SiO2 + KAl2(AlSi3O10)(OH)2)

Mica Schist (with Muscovite mica)

Mica Schist (KAl2(AlSi3O10)(OH)2)

Beach Pebble (Quartzite / Sandstone)

Quartz-rich sedimentary or metamorphic rock pebble

Raw selenite (gypsum)

Gypsum, CaSO₄·2H₂O; translucent variety selenite

Gneiss (with Mica and Quartz)

Gneissic Metamorphic Rock

Green Gneiss or Greenschist

Chlorite/Actinolite Gneiss or Schist

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Graphite Schist

C (Carbonaceous Schist)

Likely biotite-rich schist

Mica schist, chiefly quartz–biotite ± feldspar; exact identification requires testing

Quartz-veined metamorphic rock, likely mica schist

Mica schist with a milky-quartz vein; predominantly quartz, feldspar, and biotite/muscovite mica

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Graphite

Graphite (Chemical Formula: C)

Golden mica schist

Mica-rich schist, likely muscovite schist (quartz and mica; exact minerals cannot be confirmed from the image)

Banded River Cobble with Mafic Dike

Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion

Limonite (Iron Ore)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Healer's Gold (Pyrite/Magnetite in Serpentine)

Magnetite (Fe3O4) and Pyrite (FeS2) in Lizardite/Antigorite [Mg3Si2O5(OH)4]

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2)

Dragon Blood Jasper

Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Slate

Slate; predominantly fine-grained phyllosilicates (muscovite/illite, chlorite) with quartz and feldspar

Dark gray rock fragment, likely basalt

Basalt; chiefly plagioclase feldspar and pyroxene, commonly with minor olivine and magnetite

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Tumbled orange chalcedony and a gray stone disk

Chalcedony (microcrystalline quartz, SiO₂); disk likely fine-grained sandstone or slate