Mineral And Metamorphic Rock

Red Quartzite (Strawberry Quartz)

Quartzite (SiO2 with iron oxide inclusions)

Quartzite

Quartzite (Primary mineral: Quartz, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Ferruginous Quartz (Iron-stained Quartzite)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Green Schist

Greenschist (composed of Chlorite, Actinolite, and Epidote)

Tiger's Eye (Rough)

Pseudomorph of Quartz after Crocidolite (SiO2)

Gneiss (specifically a Granitic Gneiss)

Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)

Quartz Mica Schist

Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)

River Cobble (Salt and Pepper Gneiss)

Gneiss (High-grade regional metamorphic rock)

Magnetite (potentially as a Lodestone or within Ironstone)

Magnetite (Fe3O4)

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Rough Green QuartzITE / Green Aventurine

Aventurine Quartz (SiO2 + Cr-muscovite inclusions)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Gneiss (Banded Gneiss)

Gneiss

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Green Aventurine in Host Rock

SiO2 (Quartz with Fuchsite inclusions)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss

Gneiss

Quartzite with Quartz Vein

Metamorphosed Quartz-rich Arenite (SiO2)

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Milky Quartz

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist (Intermediate-grade Metamorphic Rock)

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Greenstone / Quartzite Pebble

Metamorphosed Quartz-rich Rock

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Serpentine (variety: Serpentine Rock)

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

Quartz (Milky/Vein Quartz)

Silicon Dioxide (SiO2)

Greenstone / Serpentinite

Serpentinite (composed primarily of minerals from the serpentine group Mg3Si2O5(OH)4)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, Chrysotile)

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Quartz Pebble (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Mica Schist with Pyrite

Muscovite/Biotite Schist with Iron Sulfide (FeS2)

Labradorite

Labradorite, (Ca, Na)(Al, Si)4O8