Mineral In Metamorphic Rock

Serpentinite

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

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals usually (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Unakite

Altered Granite (Epidotized Granite)

Weathered quartz-rich rock, possibly sandstone or quartzite

Likely quartzite (mostly SiO₂), though a granular sandstone is also possible

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Serpentinite

Serpentinite (containing minerals of the Serpentine subgroup: Antigorite, Lizardite, and Chrysotile; formula (Mg,Fe)3Si2O5(OH)4)

Brown Quartzite Pebble

Quartzite (SiO2)

Gneiss (Gneissic Granite)

Gneiss

Granite

Intrusive Igneous Rock

River Pebble / Quartzite Rock

Metamorphic Quartzite (primarily SiO2)

Unakite

Unakite (Epidotized Granite)

Micaceous schist (likely biotite schist)

Schist dominated by biotite mica, quartz, and feldspar

Quartzite Cobble

Quartzite (SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite Cobble

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Red Quartzite / Jasper-rich Pebble

Quartzite (primarily SiO2 with hematite inclusions)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (mostly SiO2)

Quartzite Pebble

Metamorphic Quartz (SiO2)

Fuchsite

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Greenstone / Serpentinite

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

Jasper and Quartzite Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Serpentine

Antigorite-Lizardite-Chrysotile (Mg3Si2O5(OH)4)

Quartzite / Quartz Pebble

Quartzite (SiO2)

Granite

Granite (a felsic intrusive igneous rock)

Quartzite with Iron Inclusions

Metamorphosed Sandstone (SiO2 dominated)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2)

Green Quartz (Aventurine)

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

Gneiss with Quartz Vein

Gneiss (containing SiO2 vein)

Vesicular Basalt (Lava Rock)

Vesicular Basalt

Kyanite

Kyanite (Al2SiO5)

Magnetite (or Magnetic Iron Ore)

Magnetite (Fe3O4)

Specular Hematite (Specularite)

Iron(III) oxide (Fe2O3)

Serpentine

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

Sandstone

Arenite (SiO2 dominant)

Serpentinite

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

Quartzite

Quartzite (SiO2)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)