Dear Paul,
You may be interested in the metallurgical results of some Chalcolithic
objects from the Nahal Mishmar hoard (a treasure found by P. Bar Adon
in the Judean Desert in 1961) showing a similar alloy as you are currently
looking at - Cu + As and Ni. For some published results see for example
the two mace heads (Table 1, p. 41) and a crown and basket shape vessel
(with high Sb as well, Table 2, p. 43) in Shalev and Northover, 1993,
Archaeometry 35,1: 35-47.
Yours, Sariel Shalev.
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