Phyllite
Phyllite (Foliated metamorphic rock)
Category
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
Phyllite
Phyllite (Foliated metamorphic rock)
Turquoise in Matrix
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Granite
Granite (Felsic Plutonic Rock)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Schist
Mica Schist
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Coarse-grained Granite
Granitoid (Felsic Plutonic Rock)
Granite
Granite (Felsic Plutonic Rock)
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite
Silica (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
Nephrite Jade
Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)
Epidote with Quartz and Feldspar
Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)
Jadeite Jade
Jadeite (NaAlSi2O6)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Schist
Mica Schist
Granodiorite (River Cobble)
Granodiorite (contains Quartz, Plagioclase Feldspar, Biotite Mica)
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2 (Calcium magnesium iron silicate hydroxide)
Chrysotile Asbestos
Chrysotile [Mg3Si2O5(OH)4]
Smoky Quartz
Silicon Dioxide (SiO2)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
Granite or Porphyritic Igneous Rock (weathered)
Granitoid
Granite
Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8, and Mica)
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Greenstone
Chlorite schist or Epidosite
Rough Gemstone Grains (Mixed Sapphires and Quartz)
Corundum (Al2O3) and Quartz (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Carnelian Agate
Chalcedony (Silicon Dioxide, SiO2)
Quartz (with Iron staining)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Diorite
Diorite (Intermediate intrusive igneous rock)
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)