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Preliminary evidence for the involvement of budding bacteria in the origin of Alaskan placer gold

Geology

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Abstract

Lacelike networks of micrometre-size filiform gold associated wtih Alaskan placer gold particles are interpreted as low-temperature pseudomorphs of a Pedomicrobium-like budding bacterium. Submicron reproductive structures (hyphae) and other morphological features similar to those of Pedomicrobium manganicum occur as detailed three-dimensional facsimiles in high purity gold in and on placer gold particles from Lillian Creek, Alaska. In a scanning electron microscope survey, the majority of gold particles at nine Alaskan placer deposits appear to include gold that has accumulated chemically at low temperatures in and on the cells of P. manganicum. Similar bacterioform gold from a Paleozoic deposit in China and from the Precambrian Witwatersrand deposit in South Africa may indicate that bacterioform gold is widespread. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Preliminary evidence for the involvement of budding bacteria in the origin of Alaskan placer gold
Series title:
Geology
Volume
20
Issue:
4
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
315
Last page:
318
Number of Pages:
4