Abswurmbachite
Reinecke T, Tillmanns E, Bernhardt H J
Neues Jahrbuch fur Mineralogie, Abhandlungen 163 (1991) 117-143
Abswurmbachite, CuMn6[O8/SiO4], a new mineral of the braunite
group: natural occurrence, synthesis, and crystal structure
_database_code_amcsd 0014719
9.406 9.406 18.546 90 90 90 *I4_1/acd
0 -.25 .125
atom      x      y     z occ Biso
Mn1       0    .25  .125 .84 1.31
Cu1       0    .25  .125 .16 1.31
Mn2       0      0     0 .94  .51
Cu2       0      0     0 .06  .51
Mn3     .25 .21001     0 .92  .48
Cu3     .25 .21001     0 .08  .48
Mn4  .22789  .0221  .625 .94  .50
Cu4  .22789  .0221  .625 .06  .50
Si        0    .25  .375      .40
O1    .1436  .8470 .9440      .92
O2    .1481  .0665 .0566      .68
O3    .0763  .1324 .9253      .68