Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
Muscovite on Quartz (Mica host rock)
KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Schist
Mica Schist
Granitic Pegmatite
Granite Pegmatite (coarse-grained intrusive igneous rock)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Dyed Agate
SiO2 (Silicon Dioxide)
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
Greenstone
Metabasalt (Greenstone facies)
Orca Agate
Chalcedony (SiO2) with various inclusions
Quartz Geode
Silicon Dioxide (SiO2) - Crystalline Quartz
Blue Lace Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Smoky Quartz with Chert
Silicon Dioxide (SiO2)
Schist
Lepidoblastic Mica Schist
Quartz with Mafic Inclusions
Silicon Dioxide (SiO2) with host igneous matrix
Quartzite with Quartz Vein
Metamorphosed Quartz-rich Arenite (SiO2)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Emerald
Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium
Quartz Vein in Metamorphic Rock
Silicon Dioxide (SiO2) within Metasedimentary host
Druzy Quartz
Silicon Dioxide (SiO2)
Agate (Laguna or Lace variety pattern)
Silicon Dioxide (SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Quartz on Matrix
Silicon Dioxide (SiO2)
Sunstone
Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8
Amygdaloidal Basalt
Basalt with secondary mineral infilling (SiO2/CO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)
Milky Quartz
Silicon Dioxide (SiO2)
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 with Au)
Basalt with Garnet inclusions
Basalt containing Nesosilicate (Garnet Group, likely Almandine Fe3Al2Si3O12)
Ruby
Corundum (Al2O3 with Chromium trace impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
Quartz (specifically Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)