Greenstone
Metabasalt (Greenstone Facies)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Greenstone
Metabasalt (Greenstone Facies)
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Amethyst (Quartz)
SiO2 (Silicon Dioxide)
Greenstone
Chlorite schist / Meta-basalt
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz-veined Mudstone or Argillite
SiO2 (Quartz) in Siltstone/Mudstone matrix
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Agate
Agate (Microcrystalline Quartz, SiO2)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Quartz Crystal (specifically a Double-Terminated variety)
Silicon Dioxide (SiO2) - Low Quartz
Labradorite
Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8
Labradorite
Labradorite, (Ca, Na)(Al, Si)4O8
Gneiss with Orthoclase Feldspar
Gneissic Metamorphic Rock with K-Feldspar inclusions
Pyrite
Iron Disulfide (FeS2)
Gneissic River Pebble
Gneiss
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Moonstone
Adularia (Potassium Aluminum Silicate, KAlSi3O8)
Yellow Quartz
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Hematite
Iron(III) oxide (Fe2O3)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
Chert (with Lichen)
Microcrystalline Quartz (SiO2)
Greenschist (Chlorite Schist)
Greenschist (containing chlorite, actinolite, and epidote)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Greenstone
Metabasalt / Chlorite-Epidote Schist
Greenschist with Quartz Veining
Greenschist (commonly containing Chlorite, Actinolite, and Epidote)
Druzy Quartz on Matrix (likely Limestone or Sandstone)
Silicon Dioxide (SiO2) with various trace impurities
Agate
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Healer's Gold (Pyrite and Magnetite in Schist)
Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist
Greenstone / Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
Nephrite Jade
Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2
Gneiss
Gneiss
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Granitic Gneiss
Gneiss (Complex silicate composition)