Migmatite
Migmatite (Mixed metamorphic-igneous rock)
Category
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
Migmatite
Migmatite (Mixed metamorphic-igneous rock)
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
Gneiss
Metamorphic Foliated Gneiss
Gneiss
Gneiss (Metamorphic Rock)
Banded Gneiss
Gneiss (Metamorphic Rock)
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Tumbled quartz-rich stone, likely milky quartz
Quartz (SiO₂), possibly iron-stained milky quartz or quartzite
Milky Quartz
Silicon Dioxide (SiO2)
Corundum (Sapphire in Host Rock)
Corundum (Aluminum Oxide, Al2O3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Banded Basalt / Lave Stone or Gneiss Pebble
Igneous/Metamorphic banded pebble
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Corundum (Sapphire in Matrix)
Aluminum Oxide (Al2O3)
White Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Mineral
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
Quartz River Rock
Silicon Dioxide (SiO2)
Sunstone
Feldspar group (Oligoclase / Labradorite)
Quartz Crystal
Silicon Dioxide (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6)
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Blue Apatite
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Clear or Rose Quartz)
Silicon Dioxide (SiO2)
Garnet (Spessartine / Almandine)
Fe3Al2(SiO4)3 to Mn3Al2(SiO4)3 (Nesosilicate)
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
Quartz (Milky Quartz / Quartz Crystal)
Silicon Dioxide (SiO2)
Serpentine / Serpentinite
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
Quartz (Golden Quartz / Citrine / Iron-stained Quartz)
Silicon Dioxide (SiO2)
Clear Quartz Point
Silicon Dioxide (SiO2)
Mixed Mineral Bead Bracelet
Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)
Hypersthene
Enstatite-Ferrosilite series, (Mg,Fe)2Si2O6
Sodalite
Na8(Al6Si6O24)Cl2
Milky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)