Gneiss Pebble
Gneiss (High-grade metamorphic rock)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Gneiss Pebble
Gneiss (High-grade metamorphic rock)
White Quartz Star
Silicon Dioxide (SiO2)
Quartz (Milk or Clear Variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Greenschist
Greenschist (chlorite-epidote schist)
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
Blue Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
Greenstone / Greenschist
Greenschist facies metamorphic rock
Clear Quartz
Silicon dioxide (SiO2)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Pink Quartz (Rose Quartz variant)
Silicon Dioxide (SiO2)
Labradorite
(Ca,Na)(Al,Si)4O8
Blue Calcite
Calcium Carbonate (CaCO3)
Serpentine
Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Gneiss (specifically a Banded Gneiss pebble)
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Pyrite
Iron Sulfide (FeS2)
Raw Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
Magnetite (in matrix)
Magnetite (Fe3O4)
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Gneiss
High-grade foliated metamorphic rock
Greenstone
Greenschist (containing chlorite, epidote, and actinolite)
Pyrite
Pyrite (Iron Disulfide), FeS2
Apatite
Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))
Schist
Mica Schist (Variable chemistry, often rich in muscovite and biotite)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Almandine Garnet in Matrix
Almandine (Fe3Al2(SiO4)3)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Agate
SiO2
Aventurine (Green Quartz)
Quartz with Fuchsite inclusions (SiO2 with K(Al,Cr)2(AlSi3O10)(OH)2)
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Glaucophane-bearing Schist (Blueschist)
Blueschist (Glaucophane-Lawsonite Schist)
Muscovite Mica
Muscovite KAl2(AlSi3O10)(OH)2
Quartzite
Quartzite (primarily SiO2)
Pink Marble or Rose Quartz (Likely Pink Marble based on carving texture)
Recrystallized Calcite (CaCO3)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)