Crystal Structure Gallery

The schematic drawings of crystal structure shown in this gallery were originally exhibited at "AIST-Kansai, open to the public" on Fri., 2 August, 2002.  If a material name (or a mineral name) is clicked, the crystal structure figure which illustrated the atomic (or polyhedron) arrangement of each material (or mineral) can be seen.  If a crystal system is clicked, the detailed data (space group, lattice constants, crystal structure parameters, reference) used for the drawings of crystal structures can be seen (partially visible).  The drawings were produced with ATOMS, by Shape Software.  If you wish to use the crystal structure figures, please contact us. (e-mail: nomura-k@aist.go.jp)


1. Materials for Solid Oxide Fuel Cells (SOFCs)

Material name Composition Crystal system Crystal structure Color Cell component
Zirconium oxide
(Zirconia)
ZrO2 Monoclinic
(low temperature phase)
Fluorite-type structure colorless Electrolyte
3mol% Yttria stabilized zirconia (ZrO2)0.97(Y2O3)0.03 Tetragonal Fluorite-type structure colorless Electrolyte
15mol% Calcia stabilized zirconia (ZrO2)0.85(CaO)0.15 Cubic Fluorite-type structure colorless Electrolyte
Cerium oxide
(Ceria)
CeO2 Cubic Fluorite-type structure white yellow Electrolyte (contains Sm,etc. in Ce site)
Lanthanum gallate LaGaO3 Orthorhombic
(low temperature phase)
Perovskite-type structure light brown Electrolyte (contains Sr,etc. in La site and Mg,etc. in Ga site)
Lanthanum scandate LaScO3 Orthorhombic Perovskite-type structure light brown Electrolyte (contains Sr,etc. in La site)
Barium indate Ba2In2O5 Orthorhombic Brownmillerite-type structure white yellow Electrolyte (contains La,etc. in Ba site and Y,etc. in In site)
12.5mol% Strontium doped lanthanum manganite (La0.875Sr0.125)MnO3+δ Trigonal
(low temperature phase)
Perovskite-type structure black Air electrode
15mol% Strontium doped lanthanum chromite (La0.85Sr0.15)CrO3 Trigonal
(low temperature phase)
Perovskite-type structure black Separator
Nickel Ni Cubic
(low temperature phase)
Face-centered-cubic crystal structure silver gray Fuel electrode (using as cermet with stabilized zirconia)

2. Birthstones

Month Mineral name Compositional formula Crystal system Crystal structure Color
January Garnet
(Almandine)
Fe3Al2(SiO4)3 Cubic   deep transparent red
February Amethyst containing a small amount of Fe ion in SiO2 Trigonal   purple, violet
March Aquamarine Be3Al2Si6O18 Hexagonal   bluish green
April Diamond C Cubic Diamond-type structure colorless
May Emerald Be3Al2Si6O18 Hexagonal   bright green
June Moon stone KAlSi3O8 Monoclinic   colorless
July Ruby containing a small amount of Cr ion in α-Al2O3 Trigonal Corundum-type structure deep red
August Peridot
(Olivine)
(Mg, Fe)2SiO4 Orthorhombic   yellowish green
September Sapphire containing a small amount of Ti or Fe ion in α-Al2O3 Trigonal Corundum-type structure clear bright blue
October Opal amorphous which added water to SiO2 Amorphous
(partly tetragonal)
  bluish white, milky white
November Topaz Al2SiO4(F, OH)2 Orthorhombic   colorless, caramel, yellow, pink
December Turquoise CuAl6(PO4)4(OH)8· 4H2O Triclinic   greenish blue

3. Elements, Compounds, Minerals, etc.

Material name Compositional formula Crystal system Crystal structure Color
Gold Au Cubic Face-centered-cubic crystal structure sunny yellow
Silver Ag Cubic Face-centered-cubic crystal structure silver gray
Copper Cu Cubic Face-centered-cubic crystal structure reddish-brown
Iron Fe Cubic Body-centered-cubic crystal structure steel gray
Platinum Pt Cubic Face-centered-cubic crystal structure grayish-white
Aluminum Al Cubic Face-centered-cubic crystal structure silver gray
Diamond C Cubic Diamond-type structure colorless, gray, black, yellow, pink
Graphite C Hexagonal   black
Fulleren C60 Cubic   black
Nickel oxide NiO Cubic Rock salt-type structure greenish black
Rock salt
(Sodium chloride)
NaCl Cubic Rock salt-type structure colorless
Quartz SiO2 Trigonal α-Quartz-type structure
(low temperature type)
colorless
Ice (1h) H2O Hexagonal   colorless
Sphalerite ZnS Cubic Sphalerite-type structure iron black
Wurtzite ZnS Hexagonal Wurtzite-type structure bronze
Cinnabar HgS Trigonal   deep red
Cryolite Na3AlF6 Monoclinic   white, colorless
Fluorite CaF2 Cubic Fluorite-type structure mostly green or violet (rarely yellow, pink) A pure thing is colorlessness.
Perovskite CaTiO3 Orthorhombic
(low temperature phase)
Perovskite-type structure colorless
Rutile TiO2 Tetragonal Rutile-type structure auburn, bronze, black
Anatase TiO2 Tetragonal Anatase-type structure black, blue, red and things
Brookite TiO2 Orthorhombic Brookite-type structure bronze, black
Magnesite MgCO3 Trigonal   colorless, white, gray, bronze
Dolomite CaMg(CO3)2 Trigonal   white, gray, bronze, colorless
Calcite CaCO3 Trigonal   colorless, white, yellow, bronze
Aragonite CaCO3 Orthorhombic   colorless, white, bronze
Tourmaline
(Schorl)
NaFe3Al6(BO3)3Si6O18(OH)4 Trigonal   black
Jadeite NaAlSi2O6 Monoclinic   white, green, azure, iris
Alexandrite BeAl2O4 Orthorhombic   greenish yellow
Pyrite FeS2 Cubic FeS2-type structure pale brass
Malachite Cu2(OH)2CO3 Monoclinic   green
Olivine
(Forsterite)
(Mg,Fe)2SiO4 Orthorhombic   olive green
Muscovite KAl2(AlSi3O10)(OH,F)2 Monoclinic   colorless, white
Biotite K(Mg,Fe)3(AlSi3O10)(OH,F)2 Monoclinic   burned umber
Lepidolite K(Li,Al)3(AlSi3O10)(OH,F)2 Monoclinic   pink
Feldspar K(AlSi3O8) Monoclinic   white, colorless
Pyrope Mg3Al2(SiO4)3 Cubic   red, pink, colorless
Andradite Ca3Fe2(SiO4)3 Cubic   bronze, dark green
Grossular Ca3Al2(SiO4)3 Cubic   white, green, pink
Spessartine Mn3Al2(SiO4)3 Cubic   gray, orange, bronze, red
Uvarovite Ca3Cr2(SiO4)3 Cubic   deep green

References

1) "Kouzou Muki Kagaku I (Structural Inorganic Chemistry I), Third Edition", Ryouichi Kiriyama, Hideko Kiriyama, Kyoritsu Shuppan Co., Ltd.,1979.

2) "Kouzou Muki Kagaku II, (Structural Inorganic Chemistry II), Third Edition", Ryouichi Kiriyama, Hideko Kiriyama, Kyoritsu Shuppan Co., Ltd., 1981.

3) "Kouzou Muki Kagaku III, (Structural Inorganic Chemistry III), Second Edition", Ryouichi Kiriyama, Hideko Kiriyama, Kyoritsu Shuppan Co., Ltd., 1978.

4) "Structure and Properties of Inorganic Solids", F.S. Galasso, translated by Masanori Kato and Keizo Uematsu, AGNE GIJUTSU CENTER, 1984.

5) "Tanosii Koubutsu Zukan 1 (Illustrated mineral book)", Hidemichi Hori, Soushi Sha, 1992.

6) "Tanosii Koubutsu Zukan 2 (Illustrated mineral book)", Hidemichi Hori, Soushi Sha, 1997.

7) "Crystal Structures Vol. 1, Second Edition", W.G. Wyckoff, Robert E. Krieger Publishing Company, 1963.

8) "Crystal Structures Vol. 2, Second Edition", W.G. Wyckoff, Interscience Publishers, 1964.

9) "Crystal Structures Vol. 3, Second Edition", W.G. Wyckoff, Interscience Publishers, 1965.