Banded Gneiss
Gneiss (Metamorphic Rock)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (Metamorphic Rock)
Sandstone with Quartz Vein
Arenite with Quartz (SiO2) Infilling
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Glauconitic Sandstone with possible Trace Fossil
Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
Gneiss (Metamorphic Rock)
Gneiss
Sodalite
Na8(Al6Si6O24)Cl2
Gneiss
Gneiss (High-grade metamorphic rock)
Crazy Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Orca Agate (Chalcedony)
Silicon Dioxide (SiO2) with inclusions
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Quartz Druzy on Matrix (with Copper Mineralization)
Silicon Dioxide (SiO2) with Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O)
Greenshist / Chlorite Schist
Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
Quartz Druze
Silicon Dioxide (SiO2)
Greenstone (Metabaltic/Greenschist)
Chlorite schist / Meta-basalt
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
Greenschist (Greenstone)
Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)
Greenschist
Greenschist facies metamorphic rock
Gold Nugget (or Gold Grain)
Native Gold (Au)
Quartz (Druzy or Geode fragment)
Silicon Dioxide (SiO2)
Galena
Lead(II) sulfide (PbS)
Chalcedony Nodule (Agate/Chert)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Chip
Silicon Dioxide (SiO2)
Amethyst in Matrix
Silicon Dioxide with Iron Impurities (SiO2)
Chrysocolla in Quartz (Gem Silica)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Sandstone Concretion
Arenaceous concretion (primarily SiO2 with Fe2O3 staining)
Chalcopyrite
Chalcopyrite (CuFeS2)
Turquoise
Hydrous phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Calcite Geode
Calcium Carbonate (CaCO3)
Quartz
Silicon dioxide (SiO2)
Common Opal with Host Rock
Opal (Hydrated silica, SiO2·nH2O)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Limonite Concretion
Goethite-rich Concretion (FeO(OH))
Turquoise in Matrix
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Gneiss (Schistose)
Gneiss
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Emerald In Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)