Crystal Lattice Structures:

Index by Pearson Symbol

Last modified 25 September 2001


The Pearson symbol indicates the crystal symmetry and the number of atoms in the unit cell. For example, NaCl has a face-centered (F) cubic (c) structure with 8 atoms in the cube, so it is designated cF8. Cinnabar has 6 atoms in a hexagonal (h) primitive (P) cell, so it is designated hP6. Note that the Pearson symbol does not necessarily specify a unique structure (e.g., cF8).


Pearson Symbol Categories:

cFn oFn cIn cPn hPn hRn mCn oCn oIn oPn tIn tPn


 

cF4

fcc icon
A1 (fcc) Structure

cF8

diamond icon
A4 (diamond) Structure
rock salt icon
B1 (NaCl) Structure
zincblende icon
B3 (Zincblende) Structure

cF12

fluorite icon
C1 (Fluorite) Structure
magnesium silver
arsenide icon
C1b (MgAgAs) Structure

cF16

sodium thallium
icon
B32 (NaTl) Structure
iron-3 aluminum
icon
D0_3 (AlFe3) Structure
heusler icon
L21 (Heusler)
(AlCu2Mn) Structure

cF24

Ideal beta cristobalite icon
Ideal beta-Cristobalite
(SiO2, C9) Structure
cubic laves icon
C15 (Laves) (Cu2Mg) Structure

cF56

spinel
icon
H11 (Spinel) (Al2MgO4) Structure

cF136

Si(34)
Clathrate
Si34 Clathrate

 

oF24

titanium disilicide
icon
C54 (TiSi2) Structure

oF128

sulfur
icon
alpha-Sulfur (A16) Structure

 

cI2

bcc icon
A2 (bcc) Structure

cI14

platinum oxide
icon
Pt3O4 Structure

cI16

bc8 icon
`BC8' Silicon Structure

cI32

skutterudite
icon
Skutterudite (D02) Structure

cI58

alpha manganese
icon
A12 (alpha Mn) Structure

 

cP1

simple cubic
icon
Ah (sc) Structure

cP2

cesium chloride
icon
B2 (Cesium Chloride) Structure

cP4

copper-3 gold
icon
L12 (Cu3Au) Structure
D0_9 icon
D09 (alpha-ReO3) Structure

cP5

perovskite
icon
E21 (Perovskite) Structure
iron-4 carbide
icon
Fe4C Structure

cP6

cuprite icon
C3 (Cuprite) Structure
NbO icon
NbO Structure

cP7

d2_1
icon
D21 (B6Ca) Structure

cP8

A15 icon
A15 (Cr3Si)
iron silicide
icon
B20 (FeSi)
CO icon
B21 (CO) Structure
  sulvanite icon
H24 (Sulvanite)
 

cP12

pyrite  icon
C2 (Pyrite) Structure

cP16

SC16  icon
SC16 Structure

cP20

beta manganese
icon
A13 (beta Mn) Structure

cP46

Si(46)
Clathrate
Si46 Clathrate

 

hP1

simple hexagonal lattice
Af (Simple Hexagonal) Lattice

hP2

hexagonal close-packed
icon
A3 (hcp) Structure
tungsten carbide
icon
Bh (Tungsten Carbide) Structure

hP3

selenium icon
A8 (gamma Se) Phase
hexagonal omega
icon
hexagonal omega Phase
trigonal omega
icon
trigonal omega Phase
BaPtSb icon
BaPtSb Structure

hP4

alpha lanthanum 
icon
A3' (alpha La) Structure
graphite icon
A9 (graphite) Structure
wurtzite icon
B4 (Wurtzite) Structure
nickel  
arsenide   icon
B81 (NiAs) Structure
  Lonsdaleite 
Icon
Lonsdaleite
(Hexagonal Diamond)

hP5

d5_19 icon
D519 (Al3Ni2) Structure

hP6

cinnabar icon
B9 (Cinnabar) Structure
Cu2Te
icon
Cu2Te (Ch)
CaCu_5 icon
D2d (CaCu5) Structure
tetrahedral carbon
icon
Tetrahedrally Bonded Carbon
with 3 Member Rings

hP8

d0_18
icon
D018 (Na3As) Structure
d0_19
icon
D019 (Ni3Sn) Structure
Bainite icon
Bainite (Fe3C) Structure
AlCCr2 icon
AlCCr2 Structure
  4H-CSi   Icon
Moissanite-4H (CSi)
Structure

hP9

low quartz
icon
alpha (low) Quartz (SiO2) Structure
high quartz
icon
beta (high) Quartz (SiO2) Structure

hP12

beta Tridymite
icon
C10 (beta Tridymite, SiO2)
Structure
hexagonal laves I
icon
C14 (Laves) (MgZn2)
Structure
6H-CSi   Icon
Moissanite-6H (CSi)
Structure
CMo icon
CMo Structure

hP16

AlN3Ti4 icon
AlN3Ti4 Structure

hP24

hexagonal laves II
icon
C36 (Laves) (MgNi2) Structure

 

hR1

beta polonium
icon
Ai (beta Po) Structure
mercury icon
A10 (alpha Hg) Structure

hR2

arsenic icon
A7 (alpha As) Structure

hR3

samarium icon
C19 (alpha Sm) Structure

hR4

Caswellsilverite  icon
Caswellsilverite (F51)

hR6

9R CSi  
icon
Moissanite-9R (CSi) Structure

hR10

corundum
icon
D51 (Corundum) Structure
calcium carbonate
icon
CaCO3 (Calcite) Structure

hR12

alpha Boron
icon
alpha-Boron Structure

hR6

9R CSi  
icon
Moissanite-9R (CSi) Structure

hR26

palladium aluminide
icon
PdAl Structure

hR32

copper platinum
icon
L11 (CuPt) Structure

 

mC6

AuTe2 icon
C34 (AuTe2) Structure

mC8

copper oxide
icon
B26 (CuO) Structure

mC28

B2Pd5 icon
B2Pd5 Structure

 

oC4

uranium icon
A20 (alpha U) Structure

oC8

gallium icon
A11 (alpha Ga) Structure
molecular iodine
icon
A14 (I2) Structure
platinum black
icon
A17 (black Phosphorus) Structure
chromium boride
icon
B33 (CrB) Structure

oC12

zirconium disilicide
icon
C49 (ZrSi2) Structure

oC16

gallium-3
platinum-5 icon
Ga3Pt5 Structure

 

oI12

S_2
Si-icon
S2Si (C42)

 

oP4

gold cadmium
icon
B19 (AuCd) Structure
CuTe icon
CuTe Structure

oP6

iron-2
carbide icon
Fe2C Structure

oP8

alpha-Np icon
Ac (alpha Np) Structure
germainum sulfide
icon
B16 (GeS) Structure
iron boride
icon
B27 (FeB) Structure
tetrahedral carbon icon
Tetrahedrally Bonded Carbon
with 4 Member Rings

oP14

YBaCuO
High-Tc icon
1212C High-Tc [YBa2Cu3O7-x] Structure

oP16

cementite icon
D011 (Fe3C, cementite) Structure

oP20

Pnma Perovskite
icon
CaTiO3 Pnma distorted Perovskite
MgB4
icon
MgB4 structure

oP24

Brookite icon
Brookite (C21)

oP40

d10_1
icon
D101 (C3Cr7) Structure

 

tI2

protactinium
icon
Aa (Protactinium) Structure
indium icon
A6 (Indium) Structure

tI4

beta-tin icon
A5 (beta-Tin) Structure
BCT-5 icon
bct5 (metastable Si) Structure

tI6

molybdenum
disilicide icon
C11b (MoSi2) Structure

tI8

d0_22
icon
D022 (Al3Ti) Structure
niobium phosphide
icon
NbP ("40") Structure

tI14

Al2CdS4
icon
Al2CdS4 (E3)
214 high-tc
superconductor icon
0201 High-Tc [(La,Ba)2CuO4]

tI16

d0_23
icon
D023 (Al3Zn) Structure
chalcopyrite
icon
E11 Chalcopyrite
Stannite
icon
Stannite (H26)

tI24

gallium-2 hafnium
icon
Ga2Hf Structure

 

tP2

copper gold
icon
L10 (AuCu) Structure

tP4

beta-Np
icon
Ad (beta-Np) Structure
lead oxide
icon
B10 (PbS) Structure
copper titanium
icon
B11 (gamma CuTi) Structure
copper titanium-3
icon
L60 (CuTi3) Structure

tP6

rutile icon
C4 (Rutile) Structure

tP12

alpha cristobalite icon
Alpha (low) Cristobalite (SiO2) Structure
st12 icon
`ST12' Silicon Structure

tP50

Boron T50
icon
T-50 Boron structure

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Structures indexed by: