<div dir="ltr"><div>Dear all, thanks a lot for the valuable information, <br></div><div><br></div><div>I'll forward your answers to the person responsible of the mineral collection, I hope they can fix this issue, <br></div><div><br></div><div>
<div><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button">with my best wishes</span></div><div><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button"><br></span></div><div><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button">Gönenç Göçmengil (PhD in geology) <br></span></div><div><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button">Istanbul Metropolitan Municipality, Projects Departments</span></div><div><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button">Istanbul, Turkey. <div class="gmail-adL"><br></div></span></div><div class="gmail-adL"><span style="display:inline" aria-label="°Celsius" aria-disabled="true" role="button"><br></span></div>
</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Robert Waller <<a href="mailto:rw@protectheritage.com">rw@protectheritage.com</a>>, 27 Ağu 2021 Cum, 16:44 tarihinde şunu yazdı:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-CA">Hi </span>Gönenç,<u></u><u></u></p>
<p class="MsoNormal">Halite dissolves spontaneously (deliquesces) at relative humidity of 75% or higher. Halite is unusual in that 75% limit holds regardless of temperature.<u></u><u></u></p>
<p class="MsoNormal">I don’t think escaping fluid inclusions could be responsible, if for no other reason, that the fluid would already be saturated with NaCl.<u></u><u></u></p>
<p class="MsoNormal">In my experience, the most likely cause is that a higher than normal RH was caused by placing a washed but not completely dried specimen or material into the case causing a temporary high RH situation. There may be other reasons but that
is the first scenario that I would seek to eliminate as a possibility.<u></u><u></u></p>
<p class="MsoNormal">Best,<u></u><u></u></p>
<p class="MsoNormal">Rob<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span style="color:black" lang="EN-CA">Robert Waller, PhD, CAPC, FIIC<br>
President and Senior Risk Analyst<br>
Protect Heritage Corp.<br>
622 Simoneau Way<br>
Ottawa ON K4A 1P4<br>
email: </span><span style="color:black"><a href="mailto:rw@protectheritage.com" target="_blank"><span style="color:rgb(5,99,193)" lang="EN-CA">rw@protectheritage.com</span></a><br>
</span><span style="color:black" lang="EN-CA">internet: </span><span style="color:black"><a href="http://www.protectheritage.com/" target="_blank"><span style="color:rgb(5,99,193)" lang="EN-CA">www.protectheritage.com</span></a><br>
</span><span style="color:black" lang="EN-CA">phone: 613-883-2707 (Canada)<br>
phone: 303-872-9739 (USA)<br>
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<p class="MsoNormal"><span style="color:black" lang="EN-CA">skype: rrwaller<u></u><u></u></span></p>
<p class="MsoNormal"><i><span style="color:black" lang="EN-CA">and, </span></i><span style="color:black" lang="EN-CA">Research Associate, Canadian Museum of Nature<br>
<i>and,</i> Adjunct Assistant Professor, Queen’s University<br>
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</span><a href="https://twitter.com/#!/ProtectHeritage" target="_blank"><span style="color:black;text-decoration:none" lang="EN-CA"><img style="width: 0.787in; height: 0.287in;" id="gmail-m_457220235554044019Picture_x0020_7" src="cid:17b9699e6b3bdbb399" alt="image009" width="76" height="28" border="0"></span></a><span style="color:black" lang="EN-CA"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black" lang="EN-CA"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-CA"> </span><span lang="EN-CA"><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span lang="EN-CA"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b>From:</b> Nhcoll-l <<a href="mailto:nhcoll-l-bounces@mailman.yale.edu" target="_blank">nhcoll-l-bounces@mailman.yale.edu</a>> <b>
On Behalf Of </b>gönenç göçmengil<br>
<b>Sent:</b> Friday, August 27, 2021 6:17 AM<br>
<b>To:</b> <a href="mailto:nhcoll-l@mailman.yale.edu" target="_blank">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> [Nhcoll-l] about preservation of halite minerals in an antique colleciton<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Dear all, <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">A couple of years ago, I handled the curation of an old mineral collection in Istanbul Turkey. Minerals are exhibited in a semi-closed exhibition area on the ground covered with thick glass. 2-3 years later after the establishment of the
collection (some specimens collected around 1890-the 1900s), one of the big halite samples getting started dissolved suddenly. There is no indication of interaction with a fluid, the humidity level is fixed around 70% and temperature around 20-22 °C, I suspect
maybe it contains some fluid inclusions and after a while, they dissolved? or NaCl character is not suitable for that microclimate conditions? Did anyone experience a similar problem before?
<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">with my best wishes<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Gönenç Göçmengil (PhD in geology) <u></u><u></u></p>
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<p class="MsoNormal">Istanbul Metropolitan Municipality, Projects Departments<u></u><u></u></p>
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<p class="MsoNormal">Istanbul, Turkey. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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