Mineral And Metamorphic Rock

Riverstone Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Quartz / Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Lapis Lazuli

Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)

Quartzite

Quartzite (primarily SiO2)

Dendritic Agate or Spotted Quartzite

Silicon Dioxide (SiO2) with inclusions

Unakite

Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Corundum

Corundum (Aluminium oxide, Al2O3)

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Mica Schist

Mica Schist (predominantly composed of Muscovite or Biotite silicates)

Unakite

Epidotized Granite

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Quartzite

Quartzite (SiO2)

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

Serpentine

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

Red Quartzite River Stone

Metamorphic Rock (composed mainly of Quartz, SiO2)

Slate

Slate (Low-grade foliated metamorphic rock)

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)

Banded River Cobble with Mafic Dike

Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion

Serpentine

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

Fluorite

Calcium Fluoride (CaF2)

Quartzite Pebble

Recrystallized Quartz (SiO2)

Unakite (Epidote with Quartz and Feldspar)

Unakite (Metasomatized Granitic Rock)

Unakite

Unakite (altered granite)

Unakite (or Epidote-rich Granite)

Unakite (composed of Epidote {Ca2(Al, Fe)3(SiO4)3(OH)}, Pink Orthoclase Feldspar {KAlSi3O8}, and Quartz {SiO2})

Biotite or Phlogopite Mica

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

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Celestite (Celestine)

Strontium sulfate (SrSO4)

Celestite

Celestine (Strontium Sulfate, SrSO4)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Quartzite

Metamorphic Quartzite (predominantly SiO2)

Quartzite

Quartzite (SiO2)

Unakite

Epidotized Granite

Green Quartzite (or Aventurine)

SiO2 (Silicon Dioxide) primarily, with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (likely Milky Quartz or Chalcedony)

Quartz (SiO2 - Silicon Dioxide)

Serpentinite

Serpentinite (composed mainly of Group: Serpentine; (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

Moonstone

Adularia / Orthoclase (KAlSi3O8)

Yellow Jasper

Silicon Dioxide (SiO2)

Quartzite

Quartzite (mainly SiO2)