In a previous article , we reported new TE materials, which are the pavonite homologues [Cu.sub.x+y][Bi.sub.5-y][Se.sub.8] (1.2 [less than or equal to] x [less than or equal to] 1.5, 0.1 [less than or equal to] y [less than or equal to] 0.4) with low [[kappa].sub.latt] (0.41-0.55 W x [m.sup.-1] x [K.sup.-1] at 300 K) owing to the structural complexity.
Because the electron distributions around interstitial Cu ions, which are shown in the crystal structure of Cu-Bi-Se pavonite compound (Figure 2(a)), overlapped each other along b-axis, the degree of overlapping depends on the content of the interstitial Cu.
The electronic and thermal transport properties of [Cu.sub.1.7][Bi.sub.4.7][Se.sub.8] pavonite homologues (N = 3) with monoclinic C2/m space group were investigated in the view point of the correlation with complex crystal structure via the modification of Cu or Bi sites with dopants.
Locally, associated sulphosalt minerals are: galenobismutite, cosalite, members of the bismuthinite-aikinite series (krupkaite-lindstromite range and gladite-hammarite range), argentian lillianite, Se-free junoite and members of the pavonite
Animas-Chocaya See Chocaya, Oploca 1, Siete Suyos, Animas, Chocaya Grande Antequera (also Cassiterite (needle tin), called El Salvador, greenockite, pavonite
, Bolivar) sphalerite, stannite, teallite, wurtzite, zinkenite; see Venus, Cerro Chunchu Antofagasta Stibnite with interstitial gold Araca See Viloco Ascension Azurite, barite, cerussite, hemimorphite, minium, scheelite, siderite, smithsonite Asiento See Quioma Asiento de Araca See Rosario 1 Asunta Franckeite, greenockite, stannite Atocha Minerals said to be from Atocha are actually from the Atocha- Quechisla district.
Minor amounts of Ag-Bi sulfosalts belonging to the andorite group, lillianite as well as pavonite
(*)Aikinite Bornite Calcite (*)Cosalite (?) Friedrichite Gustavite Hammarite HodrushiteKrupkaite Marcasite Pavonite