University of Colorado

Mineral Structure Data

Cuprite Group

The Cuprite group is composed of minerals of the general formula Cu2O.

The crystal structure of cuprite.


Cuprite and Ag2O Unit Cells.


EndMember        Cuprite         Ag2O 

Formula          Cu2O            Ag2O
Form.Wt.         143.079         231.739
Density          6.104           7.318
Mol.Volume       23.439          31.667
Z                2               2

Cryst.Sys.       Isometric       Isometric
Cryst.Class      m3m             m3m
Space Group      Pn3m            Pn3m

Cell Parameters
a               4.2696           4.720
Vol.             77.833          105.15

Ref.             Borie           Borie
                 (1974)          (1974)

Thermal Expansion(Volumetric)
alpha         
a0  
a1 
a2 

Elastic Properties
Ks(GPa)        
G(Gpa)        

Cuprite and Ag2O Cation Sites.


EndMember        Cuprite          Ag2O 

C.N.             2                2
Occupant         Cu               Ag
   
Point Sym.        -3m        -3m
Wyckoff Not.     4b               4b


Frac.Coord.
x                0                0
y                0                0
z                0                0


Distances
O1(2)            1.849            2.044


Site Energy        294.        266.


Mineral Data Base Index

GEOL 1010 Syllabus

GEOL 3010 Syllabus

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