Metamorphic Rock

Serpentine

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

Quartzite (Water-worn Cobble)

Quartzite (Composition: 90%+ SiO2)

Quartzite (River Pebble)

Metamorphic Quartz (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Schist

Mica Schist

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(F,OH)2

Milky Quartz

Silicon Dioxide (SiO2)

Marble (White)

Metamorphosed Limestone (mainly CaCO3)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Unakite

Unakite (altered granitic rock)

River Quartzite Siltstone

Quartz-rich Meta-siltstone (SiO2 dominated)

Unakite

Epidotized Granite

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Quartzite

Quartzite (primarily SiO2)

Unakite

Epidotized Granite

Green Quartzite

Quartzite (primarily SiO2 with chlorite inclusions)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Unakite

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

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Biotite Schist

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

Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartz Vein with Host Rock (Greywacke/Siltstone)

Silicon Dioxide (SiO2) within Clastic Sedimentary/Metamorphic Matrix

Garnet Schist

Almandine-Garnet Mica Schist

Greenschist (Greenstone)

Greenschist

Serpentine

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

Biotite Mica in Host Rock

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

Unakite

Epidotized Granite

Mica Schist with Garnet

Garnetiferous Mica Schist

Unakite

Unakite (altered granitic rock)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Unakite

Epidotized Granite

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Quartzite

Quartzite (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)