  31
C1_b    & F(-4)3m (#216) & cF12 & MgAgAs (Half Heusler) / AlLiSi (previous version had As and Ag switched)
Ag     3.10500000      .00000000      .00000000
Ag     6.21000000     3.10500000      .00000000
Ag     6.21000000      .00000000     3.10500000
Mg     6.21000000      .00000000      .00000000
Ag      .00000000     3.10500000      .00000000
Ag     3.10500000     6.21000000      .00000000
Ag      .00000000      .00000000     3.10500000
Mg      .00000000      .00000000      .00000000
Ag     3.10500000     3.10500000     3.10500000
As     1.55250000     1.55250000     1.55250000
Mg     3.10500000     3.10500000      .00000000
Ag     6.21000000     6.21000000     3.10500000
As     4.65750000     4.65750000     1.55250000
Mg     6.21000000     6.21000000      .00000000
Ag     3.10500000      .00000000     6.21000000
Mg     3.10500000      .00000000     3.10500000
Ag     6.21000000     3.10500000     6.21000000
As     4.65750000     1.55250000     4.65750000
Mg     6.21000000     3.10500000     3.10500000
Mg     6.21000000      .00000000     6.21000000
Ag      .00000000     6.21000000     3.10500000
Mg      .00000000     6.21000000      .00000000
Ag      .00000000     3.10500000     6.21000000
Mg      .00000000     3.10500000     3.10500000
Ag     3.10500000     6.21000000     6.21000000
As     1.55250000     4.65750000     4.65750000
Mg     3.10500000     6.21000000     3.10500000
Mg      .00000000      .00000000     6.21000000
Mg     3.10500000     3.10500000     6.21000000
Mg     6.21000000     6.21000000     6.21000000
Mg      .00000000     6.21000000     6.21000000
