Sedimentary Or Metamorphic

Epidote (Unakite-related)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Epidote

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

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Epidote in Matrix

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

Staurolite (Fairy Cross)

Staurolite (Fe2+2Al9Si4O23(OH))

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Schist (Micaceous)

Mica Schist (predominantly Muscovite or Biotite)

Serpentinite

Serpentine group minerals ((Mg, Fe)3Si2O5(OH)4)

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Vesuvianite (Idocrase)

Ca19(Al, Mg, Fe)13(SiO4)10(Si2O7)4(OH, F, O)10

Hypersthene

Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Sodalite

Na8(Al6Si6O24)Cl2

Banded Gneiss (Variety of Gneiss)

Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)

Mica Schist

Schist (muscovite-biotite schist)

Quartz Vein in Metamorphic Rock

Silicon Dioxide (SiO2) within Metasedimentary host

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Unakite

Unakite (Altered Granite)

Quartzite

Quartzite (SiO2)

Muscovite Schist with Muscovite Mica

Muscovite-rich Schist (KAl2(AlSi3O10)(OH)2)

Quartz (Smoky/Milky Variety)

Silicon Dioxide (SiO2)

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite River Rock

Quartzite (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Epidote in Quartz (Unakite-like specimen)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)

Quartz-veined Metamorphic Rock

Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)

Quartz (Raw and Water-worn)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Quartz Vein in Host Rock (often Granite or Schist)

Silicon Dioxide (SiO2) within host matrix

Milky Quartz

Silicon Dioxide (SiO2)

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]

Soapstone (Talc-Schist)

Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Quartz (Milky and Smoky variety)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)