This #Mapungubwe tagged image is courtesy of Flickr. Click on the Flickr account holder below the photograph to see more.
Image by Internet Archive Book Images
Identifier: annalso11011220032004sout
Title: Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum
Year: 1898 (1890s)
Authors: South African Museum
Subjects: Natural history
Publisher: Cape Town : The Museum
Contributing Library: Smithsonian Institution Libraries
Digitizing Sponsor: Biodiversity Heritage Library
View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.
Text Appearing Before Image:
CT D, had a grain size of ASTM 5. It was also not as deformed along itslength as the others, lacked a head, and was probably an unused tack blank. Prills, or cast droplets, were spherical pieces of gold found in diameters from 0.5 mm to12 mm. They were used to make various items such as punched beads, or flattened intostrips or foil. The casting of these small droplets accounts for the voids or air bubblesnoted by Oddy (1984:73). Larger prills or nodules may have been buttons of goldrecovered from melting crucibles. The smaller spherical droplets were probably formedby pouring molten gold into water, or melting filings or short pieces of wire in a cruciblepacked with charcoal. Pearson suggested that prills could have been formed by spilling themolten gold onto a flat surface, with the molten gold forming globules as it cooled(Fouche 1937). This untested method appears unlikely given the ease of producing goldshot by pouring molten gold into water. 86 ANNALS OF THE SOUTH AFRICAN MUSEUM
Text Appearing After Image:
Figure 5 Etched section through a gold tack from Mapungubwe, showing longitudinal cracks running down the length of the shaft and intense cold work deformation in the head (magnification 18x).
Note About Images
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability – coloration and appearance of these illustrations may not perfectly resemble the original work.
This Mapungubwe image was automatically curated and published with WP Robot plugin – CLICK HERE to learn more about WP Robot for WordPress – a massive time and money saver.
