Hematite
Iron(III) oxide (Fe2O3)
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Hematite
Iron(III) oxide (Fe2O3)
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8 (Potassium Aluminum Silicate)
Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic quartz-rich rock
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite with Sandstone/Iron staining
Metamorphic Quartzite (SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
Soapstone / Steatite
Steatite (primarily Talc, Mg3Si4O10(OH)2)
Granite
Felsic intrusive igneous rock
Granite
Felsic Intrusive Igneous Rock
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
Granite
Granite (Phaneritic Igneous Rock)
Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
Green Kyanite
Kyanite (Al2SiO5)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Smoky/Rock Crystal)
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Gray/Smoky Variety)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Weathered quartz-rich cobble, possibly quartzite or feldspar-rich granite
Quartz–feldspar aggregate; identification is uncertain from the photograph
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, or Chrysotile)
Greenstone / Serpentinite
Antigorite and Lizardite mixture (Mg3Si2O5(OH)4)
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Serpentine
Serpentinite (composed primarily of Mg3Si2O5(OH)4)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Serpentine
Serpentinite (group of minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg3Si2O5(OH)4)
Serpentinite
Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4