Mineral, Often Found As A Rock (Metamorphic)

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2)

Unakite

Unakite (Altered Granite)

Quartz

Quartz (SiO₂)

Schist

Schist (metamorphic rock)

Ruby in Zoisite

Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Mica Schist

Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)

Rhodonite

(Mn,Fe,Mg,Ca)SiO3

Quartz (likely Clear Quartz or Rock Crystal)

Quartz (SiO2)

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

Gneiss (Metamorphic Rock)

Gneiss

Quartzite

Quartzite (SiO2)

Mica Schist with Pyrite

Muscovite/Biotite Schist with Iron Sulfide (FeS2)

Banded Chert

Microcrystalline Quartz (SiO2)

Quartzite

Quartzite (primarily SiO2)

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Serpentine

Serpentinite (rock), Serpentine group minerals (e.g., Antigorite, Lizardite, Chrysotile)

River Quartzite (or Quartz Cobble)

Quartzite (primarily Silicon Dioxide - SiO2)

Serpentine

Antigorite / Lizardite / Chrysotile mix; (Mg, Fe)3Si2O5(OH)4

River Rock (Quartzite)

Quartzite (SiO2)

Grey River Stone (Gneiss/Schist mix)

Foliated Metamorphic Rock (variable mineral formula)

Unakite

Unakite (Altered Granite composed of Orthoclase KAlSi3O8, Epidote Ca2(Al, Fe)3(SiO4)3(OH), and Quartz SiO2)

Marble

Marbles are primarily composed of calcite (calcium carbonate, CaCO3) or dolomite (calcium magnesium carbonate, CaMg(CO3)2).

Quartzite River Rock

Quartzite (primarily SiO2)

Quartzite with Quartz Vein

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Serpentinite

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

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

Serpentine

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

Serpentine (Nephrite-like Serpentine)

Serpentinite (Hydrous magnesium iron phyllosilicate)

Serpentine

Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)

Anyolite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))

Dragon Blood Jasper

Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)

Quartz (SiO₂)

Serpentine

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

Chert (Flint Pebbles)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

River Quartz Pitting / Quartzite Pebble

Quartzite (primarily SiO2)

Serpentine

Serpentine Group Minerals (e.g., Antigorite, Chrysotile, Lizardite)