Hi Kent (and John, and list), Yes, I do have a MS in press at Am Min (see attached proof) that talks about how to make grain mounts. That’s what John was referring to. However, I don’t have much information on how to make oriented sections. It’s straightforward to make mounts of quartz that are perpendicular to c and tourmaline that are elongate parallel to c. Those instructions are pretty clear in the paper (I think). But I didn’t have a simple method for what you’re talking about – Bxa, Bxo, OA, etc. So that’s not part of the paper. I agree it would be helpful if someone could figure out how to do this. Without being too expensive. Best, Matt Note: While I may send email outside of regular business hours, I do not expect the same from others. ******************************************************************************************************************************* Dr. Matthew J. Kohn, University Distinguished Professor Department of Geosciences, Boise State University 1910 University Dr.; MS1535 Boise, ID 83725-1535 mattkohn@boisestate.edu https://www.boisestate.edu/earth/people/matthew-j-kohn/ <https://www.boisestate.edu/earth/people/matthew-j-kohn/> fax: (208)-426-4061 Pronouns: He/him/his China book: https://www.amazon.com/dp/B0BRXWNTS6 <https://www.amazon.com/dp/B0BRXWNTS6>, https://www.amazon.com/dp/B0BRZ2XRV9 <https://www.amazon.com/dp/B0BRZ2XRV9> Optical Mineralogy Book: https://optical.minpet.org/ <https://optical.minpet.org/> ******************************************************************************************************************************* > On Oct 17, 2024, at 12:48 PM, Kent Ratajeski <kent.ratajeski@calvin.edu> wrote: > > Matt, > > John Brady tipped me off that you have some info on how to make oriented grain mounts. We don't get American Mineralogist anymore, but if there was a way to send some instructions or tips, I would be very appreciative. > > Kent > > --- > Dr. Kent Ratajeski > Lecturer and Dice Mineralogical Museum Director > North Hall 081 > Department of Geology, Geography, and Environment > Calvin University > 3201 Burton St. SE > Grand Rapids, MI 49546 > (616) 526-6769 > https://calvin.edu/directory/people/kent-ratajeski <https://calvin.edu/directory/people/kent-ratajeski> > From: John Brady <jbrady@smith.edu <mailto:jbrady@smith.edu>> > Sent: Thursday, October 17, 2024 2:30 PM > To: Kent Ratajeski <kent.ratajeski@calvin.edu <mailto:kent.ratajeski@calvin.edu>> > Subject: Re: [MSA-talk] oriented grain mounts > > Hi Kent, > > Matt Kohn (mattkohn@boisestate.edu <mailto:mattkohn@boisestate.edu>) has an article in press in American Mineralogist that has good instructions of how to make some very good grain mounts that might meet your need. Matt will probably respond to your post, but if not you should contact him. > > Good wishes, > John > > > -- > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > John Brady, Mary E. Moses Professor Emeritus > Department of Geosciences, Smith College, Northampton, MA 01063 > 413-585-3953 <>, http://www.science.smith.edu/~jbrady/ <https://urldefense.com/v3/__http://www.science.smith.edu/*jbrady/__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4LU_b-5vQ$> > Interactive IgMetPet: https://www.science.smith.edu/~jbrady/petrology <https://urldefense.com/v3/__https://www.science.smith.edu/*jbrady/petrology/front-matter/figure-lists.php__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lc3NzuxE$> > Petrography Online: https://optical.minpet.org/ <https://urldefense.com/v3/__https://optical.minpet.org/__;!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lo2k9iag$> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > On Thu, Oct 17, 2024 at 9:56 AM Kent Ratajeski via MSA-talk <msa-talk@minlists.org <mailto:msa-talk@minlists.org>> wrote: > All, > > Quite a few of our oriented mineral grain mounts are either showing their age (e.g., cracked epoxy or maybe Canada balsam, broken glass slides, etc.) or otherwise low in quality (e.g., having lots of cracks or veins or inclusions and yielding cloudy interference figures, not well-centered figures, etc.). I could go through a few iterations of cutting up some stuff from our mineral specimens, guessing at or doing rough measurements to find the orientations for various figures (Bxa, OA, etc.), sending them off for thin-sections....but before I do that, perhaps I should ask if anyone makes these anymore? If so, I'll bet they are expensive. > > Kent > > --- > Dr. Kent Ratajeski > Lecturer and Dice Mineralogical Museum Director > North Hall 081 > Department of Geology, Geography, and Environment > Calvin University > 3201 Burton St. SE > Grand Rapids, MI 49546 > (616) 526-6769 > https://calvin.edu/directory/people/kent-ratajeski <https://calvin.edu/directory/people/kent-ratajeski> > _______________________________________________ > MSA-talk mailing list -- msa-talk@minlists.org <mailto:msa-talk@minlists.org> > To unsubscribe send an email to msa-talk-leave@minlists.org <mailto:msa-talk-leave@minlists.org>

John Brady, Mary E. Moses Professor Emeritus
Department of Geosciences, Smith College, Northampton, MA 01063
413-585-3953,  http://www.science.smith.edu/~jbrady/<https://urldefense.com/v3/__http://www.science.smith.edu/*jbrady/__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4LU_b-5vQ$>
Interactive IgMetPet: https://www.science.smith.edu/~jbrady/petrology<https://urldefense.com/v3/__https://www.science.smith.edu/*jbrady/petrology/front-matter/figure-lists.php__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lc3NzuxE$>
Petrography Online: https://optical.minpet.org/<https://urldefense.com/v3/__https://optical.minpet.org/__;!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lo2k9iag$>

while on petrography: https://onlinelibrary.wiley.com/doi/10.1111/jmi.13284 and online.... https://mints.uwc.ac.za/mints/home.php and...a search on 'mineral sections' on Ward's: https://www.wardsci.com/store/product?keyword=mineral%20sections Winton ________________________________ From: Matt Kohn via MSA-talk <msa-talk@minlists.org> Sent: Thursday, October 17, 2024 2:02 PM To: Kent Ratajeski <kent.ratajeski@calvin.edu> Cc: MSA public List serve <msa-talk@minlists.org> Subject: [MSA-talk] Re: oriented grain mounts Hi Kent (and John, and list), Yes, I do have a MS in press at Am Min (see attached proof) that talks about how to make grain mounts. That’s what John was referring to. However, I don’t have much information on how to make oriented sections. It’s straightforward to make mounts of quartz that are perpendicular to c and tourmaline that are elongate parallel to c. Those instructions are pretty clear in the paper (I think). But I didn’t have a simple method for what you’re talking about – Bxa, Bxo, OA, etc. So that’s not part of the paper. I agree it would be helpful if someone could figure out how to do this. Without being too expensive. Best, Matt Note: While I may send email outside of regular business hours, I do not expect the same from others. ******************************************************************************************************************************* Dr. Matthew J. Kohn, University Distinguished Professor Department of Geosciences, Boise State University 1910 University Dr.; MS1535 Boise, ID 83725-1535 mattkohn@boisestate.edu<mailto:mattkohn@boisestate.edu> https://www.boisestate.edu/earth/people/matthew-j-kohn/ fax: (208)-426-4061 Pronouns: He/him/his China book: https://www.amazon.com/dp/B0BRXWNTS6, https://www.amazon.com/dp/B0BRZ2XRV9 Optical Mineralogy Book: https://optical.minpet.org/ ******************************************************************************************************************************* On Oct 17, 2024, at 12:48 PM, Kent Ratajeski <kent.ratajeski@calvin.edu<mailto:kent.ratajeski@calvin.edu>> wrote: Matt, John Brady tipped me off that you have some info on how to make oriented grain mounts. We don't get American Mineralogist anymore, but if there was a way to send some instructions or tips, I would be very appreciative. Kent --- Dr. Kent Ratajeski Lecturer and Dice Mineralogical Museum Director North Hall 081 Department of Geology, Geography, and Environment Calvin University 3201 Burton St. SE Grand Rapids, MI 49546 (616) 526-6769 https://calvin.edu/directory/people/kent-ratajeski ________________________________ From: John Brady <jbrady@smith.edu<mailto:jbrady@smith.edu>> Sent: Thursday, October 17, 2024 2:30 PM To: Kent Ratajeski <kent.ratajeski@calvin.edu<mailto:kent.ratajeski@calvin.edu>> Subject: Re: [MSA-talk] oriented grain mounts Hi Kent, Matt Kohn (mattkohn@boisestate.edu<mailto:mattkohn@boisestate.edu>) has an article in press in American Mineralogist that has good instructions of how to make some very good grain mounts that might meet your need. Matt will probably respond to your post, but if not you should contact him. Good wishes, John -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ John Brady, Mary E. Moses Professor Emeritus Department of Geosciences, Smith College, Northampton, MA 01063 413-585-3953, http://www.science.smith.edu/~jbrady/<https://urldefense.com/v3/__http://www.science.smith.edu/*jbrady/__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4LU_b-5vQ$> Interactive IgMetPet: https://www.science.smith.edu/~jbrady/petrology<https://urldefense.com/v3/__https://www.science.smith.edu/*jbrady/petrology/front-matter/figure-lists.php__;fg!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lc3NzuxE$> Petrography Online: https://optical.minpet.org/<https://urldefense.com/v3/__https://optical.minpet.org/__;!!NqMqxtPG!84psWRCq1ZjFqCEXd0XOnSfTpHCAZSO50MCKZzWb82sshSEM2V1ubXlo_F5GPs9MP_zYKcHh1Whprl4Lo2k9iag$> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ On Thu, Oct 17, 2024 at 9:56 AM Kent Ratajeski via MSA-talk <msa-talk@minlists.org<mailto:msa-talk@minlists.org>> wrote: All, Quite a few of our oriented mineral grain mounts are either showing their age (e.g., cracked epoxy or maybe Canada balsam, broken glass slides, etc.) or otherwise low in quality (e.g., having lots of cracks or veins or inclusions and yielding cloudy interference figures, not well-centered figures, etc.). I could go through a few iterations of cutting up some stuff from our mineral specimens, guessing at or doing rough measurements to find the orientations for various figures (Bxa, OA, etc.), sending them off for thin-sections....but before I do that, perhaps I should ask if anyone makes these anymore? If so, I'll bet they are expensive. Kent --- Dr. Kent Ratajeski Lecturer and Dice Mineralogical Museum Director North Hall 081 Department of Geology, Geography, and Environment Calvin University 3201 Burton St. SE Grand Rapids, MI 49546 (616) 526-6769 https://calvin.edu/directory/people/kent-ratajeski _______________________________________________ MSA-talk mailing list -- msa-talk@minlists.org<mailto:msa-talk@minlists.org> To unsubscribe send an email to msa-talk-leave@minlists.org<mailto:msa-talk-leave@minlists.org>