30 Jan 2013
10:00 GMT
London, Knightsbridge
Gentleman's Library Sale - Natural History
Back to auction 20448
Gentleman's Library Sale - Natural History
Back to auction 20448
A multicoloured petrified wood slab,
Triassic period (approximately 225 million years old), Araucarioxlylon Arizonicum sp, Arizona, USA, mounted on a perspex stand,
39.6in (99.5cm) diam
39.6in (99.5cm) diam
Sold for
£5,625
inc. premium
Footnotes
- By itself Quartz is colourless, though as seen in this specimen, the presence of trace elements during formation has provided a striking array of colour. Manganese appearing as pink, Chromium showing as blues and greens and Iron Oxide providing reds and yellows.
Category: Natural History
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Lionel Willis
Bonhams
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Natural History