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The Material Characterization of a Santamarian Ceremonial Axe[Note 1. Received 3 November 1997; accepted 11 June 2001. ...]
Author(s) -
Lascalea G. E.,
Pifferetti A.,
Fernandez De Rapp M. E.,
Walsöe De Reca N. E.,
Northover J. P.
Publication year - 2002
Publication title -
archaeometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 67
eISSN - 1475-4754
pISSN - 0003-813X
DOI - 10.1111/1475-4754.00044
Subject(s) - bronze , characterization (materials science) , metallography , archaeology , indentation hardness , metallurgy , geology , materials science , art , geography , microstructure , nanotechnology
The characterization of a ceremonial bronze axe is described. The axe is assigned to the Santamarian culture of north‐west Argentina, c. 1000–1470 ad, and was selected to increase presently limited knowledge of prehistoric metallurgy in the Andean region of Argentina. The characterization methods used were electron probe microanalysis, gamma radiography, X‐ray diffraction, optical metallography and microhardness testing. The axe was well cast in a bivalve mould, with the only defects in the area of an ancient fracture. The analysis showed that it is made from a tin bronze with a, probably, accidental addition of lead. Arsenic was found as a surface contamination, probably deriving from arsenic in the water of the stream in which the axe was found. The axe shows that Santamarian craftsmen had the skill to decorate the axe in an artistic style with a strong local accent while providing a functional, annealed and cold‐worked cutting edge.