Page 205 - Copper and Bronze in Art: Corrosion, Colorants, Getty Museum Conservation, By David Scott

3 0 A

P L A T E 3 0 Photomicrographs of botallackite natural
mineral specimen from the Levant mines, Cornwall,
England: , A viewed with plane polarized light,
showing clear green crystals with prominent band­
B
ing and growth features; and , viewed under
crossed polars showing highly biréfringent particles
with banding clearly evident (both in melt-mount
R I 1.662; magnification x347). Collections of the
British Museum, Natural History.
3 0 B
P L A T E 31 Photomicrograph of a green pigment,
possibly synthetic botallackite, from a fifteenth-
century Persian manuscript (see P L A T E 32). Bright-
field transmitted illumination (mounted in Aroclor
R I 1.662; magnification χ325) .

P L A T E 32 Firdawsi, "Rustam before Kay Khusraw
under the Jeweled Tree," folio from Shahnama
manuscript, Iran, fifteenth century. Opaque water-
color on paper, plant gum medium. The green
pigment sample shown in P L A T E 31 was taken from
this work. Arthur M. Sackler Gallery, Smithsonian
Institution (S1986.0159).

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