Copper mining and smelting technology in the northern Lowveld, South Africa, ca. 1000 CE to ca. 1880 CE

David J Killick, Duncan Miller, Thomas Panganayi Thondhlana, Marcos Martinón-Torres

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report chemical, petrographic and metallographic studies of copper ores and slags recovered during sporadic surface surveys and excavations over the past fifty years in the Phalaborwa and Murchison Range areas of the northern Lowveld of South Africa. The copper slags around Phalaborwa have unusual mineral assemblages, attributable to the unique geochemistry of the main ore body, the Phalaborwa Complex, where copper minerals were mined from a carbonatite composed of magnetite, calcite and apatite. Strongly reducing conditions had to be avoided to minimise contamination of the copper with iron and phosphorus. As the copper ores contain almost no silicates, silica/alumina flux was added to produce slag. The Precambrian zinc-copper ores of the Murchison Range were also smelted, but during smelting any zinc that was not volatilised was taken up by minerals in the slag, so brass was not produced.

Original languageEnglish (US)
Pages (from-to)10-26
Number of pages17
JournalJournal of Archaeological Science
Volume75
DOIs
StatePublished - Nov 1 2016

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environmental pollution
Copper Smelting
Copper
South Africa
Copper Mining
Ore
Slag
Minerals

Keywords

  • Archaeometallurgy
  • Copper
  • Mining
  • Slag
  • Smelting
  • South Africa
  • Technology

ASJC Scopus subject areas

  • History
  • Archaeology

Cite this

Copper mining and smelting technology in the northern Lowveld, South Africa, ca. 1000 CE to ca. 1880 CE. / Killick, David J; Miller, Duncan; Thondhlana, Thomas Panganayi; Martinón-Torres, Marcos.

In: Journal of Archaeological Science, Vol. 75, 01.11.2016, p. 10-26.

Research output: Contribution to journalArticle

Killick, David J ; Miller, Duncan ; Thondhlana, Thomas Panganayi ; Martinón-Torres, Marcos. / Copper mining and smelting technology in the northern Lowveld, South Africa, ca. 1000 CE to ca. 1880 CE. In: Journal of Archaeological Science. 2016 ; Vol. 75. pp. 10-26.
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