<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello geology folks! Get out your hand lens – I could use some help with identification of these specimens! Paperwork associated with them indicates they were collected around Angola, Indiana prior to 1936. They appear to be some kind of precipitate, but I haven’t been able to determine anything for certain and I’m open to suggestions for leads.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve got a few more pictures if wanted, but they won’t all go through the list serve. Your help is appreciated!<o:p></o:p></p><p class=MsoNormal>Dawn<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>Dawn Roberts | Director of Collections<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>The Chicago Academy of Sciences / Peggy Notebaert Nature Museum<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>2430 North Cannon Drive, Chicago, IL 60614 | www.naturemuseum.org<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>Collections Facility and Office<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>4001 N Ravenswood Avenue, suite 201, Chicago, IL 60613 | 773-755-5125<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Tw Cen MT","sans-serif"'>The Urban Gateway to Nature and Science<o:p></o:p></span></i></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>