I've subsequently found this highly detailed research article by Ludewig, which does consider bias in the colonial newspapers. #vonSommer
The mysterious Dr Ferdinand von Sommer (~1800–49): Western Australia’s first government geologist https://www.publish.csiro.au/HR/HR24025

The mysterious Dr Ferdinand von Sommer (~1800–49): Western Australia’s first government geologist
Dr Ferdinand von Sommer (~1800–49) was the first government geologist appointed in Western Australia, a state that today owes its prosperity largely to the discovery and development of its rich mineral deposits. During his relatively short life, Ferdinand left a trail of incredible and diverse achievements, exploits and mystery that extended across the continents of Europe, Asia, Africa and Oceania during the first half of the nineteenth century. Although his credibility has been challenged and his character maligned—both then and now—this paper aims to showcase his wide-ranging scientific endeavours and contributions, and to present a more complete picture of Ferdinand von Sommer and his legacy.
CSIRO PUBLISHINGA reaction from me to today's article on Ferdinand von Sommer by Professor Alexandra Ludewig (UWA) in The Conversation:
Genius or charlatan? The strange tale of a 19th-century polymath who left a trail of controversy across colonial Australia.
https://theconversation.com/genius-or-charlatan-the-strange-tale-of-a-19th-century-polymath-who-left-a-trail-of-controversy-across-colonial-australia-242292
#1840s #historyAU #DutchEastIndies #miningHistory #vonSommer #SouthAustralia #WesternAustralia #1850s
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Genius or charlatan? The strange tale of a 19th-century polymath who left a trail of controversy across colonial Australia
Ferdinand von Sommer was Western Australia’s first government geologist – but until now his life and career have been shrouded in mystery.
The Conversation