Serpentine
Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4
metamorphic
Category
Metamorphic And Igneous
Browse metamorphic and igneous specimens identified by the Rock Identifier community.
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Banded Gneiss
Gneiss (quartz-feldspar-biotite metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (Metamorphic rock dominated by Quartz, Feldspar, and various dark minerals)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Greenstone / Greenschist
Greenschist (metamorphosed mafic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss
metamorphic
Greenstone / Epidosite
Epidosite (primary minerals: Epidote and Quartz)
metamorphic
Lapis Lazuli
Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)
metamorphic
Greenstone
Greenschist-facies basaltic rock
metamorphic
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
metamorphic
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
metamorphic
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Dyed Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Red Garnet
Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)
mineral
Quartz chunk
Silicon dioxide (SiO2)
mineral
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Banded Agate
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Plagioclase Feldspar
Plagioclase (NaAlSi3O8 - CaAl2Si2O8 series)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Unidentifiable Specimen
Undetermined
Unknown
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Quartz (Milky/Clear)
Silicon Dioxide (SiO2)
mineral