[Nhcoll-l] Attention conservators: Insect pin corrosion

[David Notton]

Nat. Hist. Conservators (others may look away now)

I’ll be grateful for an opinion on the metal corrosion shown in the attached image, it depicts dark coloured dendritic growths, altogether different from the regular green waxy verdigris. Any ideas what is its composition/formation/what kinds of pins are prone to it/prevention?

Many thanks!

David

David G. Notton, Senior Curator (Hymenoptera)
Department of Life Sciences, Insects Division, Darwin Centre - room 315, The Natural History Museum<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.nhm.ac.uk_&d=AwIGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=xwtnsXnSDsvmPzMh3F9Gin7gtXa2-bHl5i1lYW5e8d0&e= >, Cromwell Road, London, SW7 5BD, United Kingdom. 0207 942 5974.

My publications: David Notton Researchgate profile<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_profile_David-5FNotton&d=AwIGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=7xyw0ITUN0HdP-KOwfH1MiEjGTRfI8EFr8By6Uy5vYg&e= >
Museum data: Natural History Museum Data Portal<https://urldefense.proofpoint.com/v2/url?u=http-3A__data.nhm.ac.uk_&d=AwIGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=EmJ2eBf59GeiEY-LSWCrVg51v-KBE19qiL6eGDWFRCo&e= >




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