Igneous, Sedimentary, Metamorphic, Mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Biotite Mica in Host Rock

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

Marble

Metamorphosed Limestone/Dolomite

Greenstone (Metabaltic/Greenschist)

Chlorite schist / Meta-basalt

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Soapstone

Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)

Gneiss

Gneiss (a type of metamorphic rock)

Calcite

Calcium Carbonate (CaCO3)

Amphibolite / Hornblende Schist

Amphibolite

Chalcopyrite

Chalcopyrite (CuFeS2)

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Pyrite (or Fool's Gold)

Pyrite (FeS₂)

River Pebble (Quartz-rich)

Silicon Dioxide (SiO2) with impurities

Pyrite

Pyrite (FeS2)

Gneiss

Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Smoky Quartz / Chalcedony

Silicon Dioxide (SiO2)

Greenstone / Epidosite

Epidosite (primary minerals: Epidote and Quartz)

Zircon

Zircon (ZrSiO4)

Gold-Bearing Quartz Ore

Crystalline Silicon Dioxide (SiO2) with Trace Aurum (Au)

Green Schist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Granite (with Almandine Garnet inclusions)

Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Greenstone / Serpentinite

Serpentine-group / Altered Mafic Rock

Orange Calcite

Calcium Carbonate (CaCO3)

Gold-bearing Quartz Ore

Auriferous Quartz (SiO2 + Au)

Unidentified gray stone

Likely quartz-rich stone; exact identification is not possible from the image

Emerald (Beryl)

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

Gneiss (likely)

Gneiss

Muscovite Mica (in Quartz matrix)

Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)

Garnet and Quartz

Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)

Greenschist (Greenstone River Pebble)

Greenschist (Chlorite Schist)

Almandine Garnet

Fe3Al2(SiO4)3

Epidosite

Epidosite (predominantly Epidote {Ca2Al2Fe3+Si3O12(OH)} and Quartz {SiO2})

Quartz (Iron-Stained / Yellow Quartz)

Silicon Dioxide (SiO2)

Greenschist (Chlorite Schist)

Greenschist (containing Chlorite, Actinolite, and Epidote)

Biotite Schist

Biotite Schist (Metamorphic Rock featuring K(Mg,Fe)3AlSi3O10(OH)2)

Milky Quartz with Matrix

Silicon Dioxide (SiO2)