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<div class="moz-cite-prefix">Hi Jessica,</div>
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<div class="moz-cite-prefix">could also be Schweinfurter Green, also called Paris or Vienna green, i.e. copper(II) acetate triarsenite or copper(II) acetoarsenite. This green copper-arsenic pigment was also used for preservation and has been used as a rodenticide
and insecticide (second link in German, but you may run this through DeepL or similiar translator)</div>
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<div class="moz-cite-prefix"><a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Paris_green">https://en.wikipedia.org/wiki/Paris_green</a></div>
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<div class="moz-cite-prefix"><a class="moz-txt-link-freetext" href="https://www.uni-bamberg.de/restaurierungswissenschaft/forschung/forschungsprojekte/schweinfurter-gruen/">https://www.uni-bamberg.de/restaurierungswissenschaft/forschung/forschungsprojekte/schweinfurter-gruen/</a></div>
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<div class="moz-cite-prefix">If you are in reach of an XRF you should be able to trace the elements, that should give you a quick, non-invasive hint.</div>
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<div class="moz-cite-prefix">Hope this helps</div>
<div class="moz-cite-prefix">Dirk</div>
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<div class="moz-cite-prefix">Am 24.09.2025 um 20:57 schrieb John E Simmons:</div>
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Jessica,</div>
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Although arsenic exposure is a possibility, I think it is far more likely that the fluid specimen was stored in a copper container. I have seen the same color green in anuran skeletons stored in copper containers. There were a number of substances added to
fluid preservatives that stained specimens green (e.g., alum).</div>
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If you know anyone who has an arsenic test kit you could probably confirm whether it is arsenic green. The test kits are relatively easy to use.</div>
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--John</div>
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<div dir="ltr"><font size="2"><span style="font-family:tahoma,sans-serif">John E. Simmons<br>
Writer and Museum Consultant</span></font></div>
<div dir="ltr"><font size="2"><span style="font-family:tahoma,sans-serif">Museologica<br>
<i>and</i><br>
Research Associate, Earth and Mineral Sciences Museum & Art Gallery</span></font></div>
<div dir="ltr"><font size="2"><span style="font-family:tahoma,sans-serif">Penn State University</span></font></div>
<div><font size="2"><span style="font-family:tahoma,sans-serif"><i>and</i></span></font></div>
<div dir="ltr"><font size="2"><span style="font-family:tahoma,sans-serif">Investigador Asociado, Departamento de Ornitologia<br>
Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Lima</span></font><br>
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<div dir="ltr" class="gmail_attr">On Wed, Sep 24, 2025 at 2:35 PM Tir, Jessica K <<a href="mailto:jessica.tir@wsu.edu" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">jessica.tir@wsu.edu</a>> wrote:<br>
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Hi all,</div>
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There is a mint green razorbill skeleton in our collection. The particular shade of green reminds me of arsenic-based pigments like Paris/Scheele's green. I’m wondering if any of you have encountered a green skeleton like this or have guesses about what happened
here?</div>
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This bird was collected in 1951 and preserved in fluid until 1968 when it was converted to a skeleton. I don’t have any other information about what chemicals or treatments were applied to the specimen.</div>
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Thoughts?</div>
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Best,</div>
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Jess</div>
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<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;color:rgb(166,15,45)"><b><img src="cid:part1.NETXtu88.mhE7ZUXX@leibniz-lib.de" alt="Washington State University Logo: W, S, U, letters create a cougar head." id="m_-7199628223398190499m_-5390957517702727107Graphic_x0020_1" width="67" height="67" style="width: 0.7083in; height: 0.7083in; margin-top: 0px; margin-bottom: 0px;" class=""></b></span></p>
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<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;color:rgb(166,15,45)"><b>Jessica Tir
</b></span><span style="font-family:Arial,sans-serif;font-size:8pt;color:rgb(89,89,89)">(she/her)</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">Curator</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">Charles R. Conner Museum</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">School of Biological Sciences</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">Washington State University</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">Office: 509-335-3515</span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)">Email:
</span><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(5,99,193)"><u><a href="mailto:jessica.tir@wsu.edu" style="margin-top:0px;margin-bottom:0px" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">jessica.tir@wsu.edu</a></u></span></p>
<p style="margin:0in;font-family:Calibri,sans-serif;font-size:11pt"><span style="font-family:Arial,sans-serif;font-size:9pt;color:rgb(77,77,77)"><u><a href="https://sbs.wsu.edu/conner-museum/" style="margin-top:0px;margin-bottom:0px" target="_blank" moz-do-not-send="true">Conner
Museum Website</a></u></span></p>
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