Mineral In Metamorphic Rock

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Unakite

Epidote–orthoclase–quartz metamorphic rock

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Schist (Micaceous)

Mica Schist

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Quartz Pebble

Silicon Dioxide (SiO2)

Ruby (Pinkish-Red)

Corundum (Al2O3 with Chromium trace)

Milk Quartz (White) and Yellow Aventurine (Yellow)

Silicon Dioxide (SiO2)

Epidote

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

Granitic Gneiss

Gneiss (High-grade Metamorphic Rock)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Tumbled epidote-bearing rock (likely epidote–quartz–feldspar aggregate)

Epidote-rich metamorphic rock; minerals likely epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH), quartz, feldspar, and dark amphibole/biotite)

Asphalt (Bituminous Concrete)

Bituminous Concrete / Pavement

Peacock Ore (Bornite or Chalcopyrite treated with acid)

Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)

Tiger's Iron

Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)

Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)

Silicon Dioxide (SiO2) with various inclusions

Lapis Lazuli

Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Quartzite with inclusions

Quartzite (primarily SiO2)

Quartz Pebble (Iron-Stained Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite inclusion

Milky Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Corundum (Sapphire in Host Rock)

Corundum (Aluminum Oxide, Al2O3)

Quartz Pebble

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Blue Quartz (Dumortierite Quartz)

SiO2 containing inclusions of Dumortierite [Al7(BO3)(SiO4)3O3]

Granitic Gneiss

Gneiss (high-grade metamorphic rock primarily of quartz, feldspar, and mica)

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Auriferous Quartz or Pyritic Ore

Iron Pyrite (FeS2) or Native Gold (Au) in Matrix

Mica Schist

Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)

Ruby in Zoisite (Anyolite)

Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))

Quartz Vein in Schist / Gneiss Metamorphic Matrix

Silicon Dioxide (SiO2) in metamorphic schist host rock

Fulgurite

Fulgurite (Lechatelierite)

Quartz-veined Gneiss

Gneiss with Quartz (SiO2) intrusions

Orange Quartzite / Carnelian Agate

Silicon Dioxide (SiO2)

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Greenstone

Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)