Mineral And Metamorphic Rock

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Milky Quartz in Gneiss

Quartzite / Foliated Gneiss containing SiO2

Green Schist

Greenschist (Chlorite Schist)

Banded mica schist

Mica schist, chiefly muscovite/biotite with quartz and feldspar

Banded Gneiss / Metamorphic River Pebble

Gneiss (Foliated Metamorphic Rock)

Mica Schist with Quartz

Mica Schist (primarily Muscovite or Biotite with Quartz)

Epidote (Greenstone)

Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)

Lapis Lazuli

Lapis lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Granite

Felsic intrusive igneous rock

River Cobble (Gneiss/Schist mix)

Foliated Metamorphic Rock (Gneissic/Schistose)

Quartz

Silicon Dioxide (SiO2)

Schist

Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

Clear Quartz / Diamond (untested)

Silicon Dioxide (SiO2) or Carbon (C)

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Pink Granite Gneiss

Gneiss (High-grade metamorphic rock)

Marble

Metamorphic Limestone (CaCO3)

Milky Quartz (Quartz Vein)

Silicon Dioxide (SiO2)

Quartz with Epidote / Serpentine (Vein Quartz)

SiO2 (Quartz) with Ca2(Al,Fe)3(SiO4)3(OH) (Epidote)

Quartz Vein in Metamorphic Rock

Quartzite or Schist host with Quartz (SiO2) intrusion

Epidote

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

Garnet Schist

Almandine-bearing Mica Schist

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Lapis Lazuli (polished cabochon/sphere)

Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Gneiss (with Quartzite and Biotite)

Gneiss containing SiO2 (Quartz), K(Mg,Fe)3AlSi3O10(OH)2 (Biotite), and (K,Na,Ca)AlSi3O8 (Feldspar)

Quartz Vein in Schist

Quartz (SiO2) in Mica Schist

Epidotite (Unakite-related Epidote)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Ruby in Zoisite

Anyolite (composite of Corundum and Zoisite)

Quartz Vein in Host Rock

Quartz (SiO2) in metamorphic host rock (likely schist or phyllite)

Dumortierite in Quartz

Silicon Dioxide with Aluminium Borosilicate (SiO2 + (Al,Fe7+)7(BO3)(SiO4)3O3)

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite-rich Ore

Pyrite (FeS2) with secondary minerals

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Green Quartz (Aventurine or Prase)

Silicon Dioxide (SiO2) with inclusions

Schist (Micaceous Schist)

Mica Schist

Quartzite

Metamorphic Quartz Rock (SiO2)