Thanks very much for prompt answers. There are several suspicious
indices - besides the already discussed - which made me to
separate these very small slag cakes from common smithing waste
(which is present on the site too):
1. relatively low content of FeO + Fe2O3 (most often 30 + 3%, but
once only 10%! - see table of chemical composition I attached) while
smithing slags are here commonly of cca 40% - 45% Fe oxides
2. indices of cca 1 cm wide projections from the edge of slag cakes
(towards a taphole?)
3. other indices of non - ferous metallurgy on the site: 5 finds of
stone moulds for casting of small objects (jewels, crucifixes etc.).
In general, does it exist some evidence of small capacity furnaces
for non - ferrous smelting and refining? I only know portable
"Probieroefen" (for little bit other purposes).
Thanks Karel
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