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Subject: Mercury backing on mirrors

Mercury backing on mirrors

From: Krysia Spirydowicz <spirydow>
Date: Friday, September 28, 2001
Detlef Klein <klein [at] pncc__govt__nz> writes

>I have a clock case decorated with, amongst other materials, mirrors
>cut as mouldings. The clock is 18th century and French, the mirrors
>are mercury backed and originally adhered to the oak case work with
>animal glue. The mercury has in some cases separated from the glass,
>small droplets gathering in cracks etc of the case. The mirror
>mouldings are insecure or have separated.

I recommend the article by Per Hadsund entitled "The Tin-Mercury
Mirror: Its Manufacturing Technique and Deterioration Processes",
Studies in Conservation 38 1993-3-16.

Krysia Spirydowicz
Professor of Artifact Conservation
Art Conservation Program
Queen's University
Kingston, Ontario, Canada

                  Conservation DistList Instance 15:28
                 Distributed: Tuesday, October 2, 2001
                       Message Id: cdl-15-28-003
Received on Friday, 28 September, 2001

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