US$ 501.43
Oval surround with decorative acanthus
County of Lincoln
Centre Court
24th February 1969
Apophyllite under polarized light Finish:Single Oval surround with decorative acanthusThree figures showing a variety of the Faroe Islands mineral Apophyllite (named Tesselite by David Brewster) viewed under the microscope. Figure 1 Faroe Apophyllite viewed under polarized light at x50 magnification. Figure 2 Colours produced by Apophyllite 'when crossed by a plate of sulphate of lime, which gives one unified blue tint. Figure 3 Circular system of rings round the axis of 'Apophyllite Surcomposee.' Plate 21 from the paper 'Account of a
US$ 501.43
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