Jeff, re component transformations: 1) it's usually easier to transform the components specified in the thermodynamic data file with the program CTRANSF, than...
592
Perple_X@yahoogroups....
Apr 1, 2013 6:40 pm
Rules of the List 1) There is no such thing as a stupid question--if you have encountered a problem, someone else may have too, ask away! 2) Partial answers...
593
zjuxiaoqiang
Apr 5, 2013 3:45 pm
Hello, everyone! I'm a graduate student from China. Recently I'm studying the ultrahigh temperature granulite (pelitic gneiss) with mineral assemblage of...
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Jesse Walters
jesserockdude
Apr 5, 2013 4:40 pm
Hello, I actually working on a UHT paragniess from N. Qaidam at the moment. Here are some of the things I've done that worked well for my sample. 1. Biotite...
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zjuxiaoqiang
Apr 6, 2013 9:15 am
Thank you for your help! The model of biotite should be TiBio(HP) (I read some paper using the model Bio(HP) in granulite and TiBio(HP) is a extension of this...
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Jesse Walters
jesserockdude
Apr 6, 2013 9:24 am
Hi, Make sure you use the Bio(TCC) model. I don't think the HP model has been updated yet, and the site assignment on the TiBio(HP) model is incorrect in the...
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zjuxiaoqiang
Apr 6, 2013 9:32 am
Ok, great thanks. I've struggled in the phase diagram for a long time and tried other programs too(eg. Theriak/Domino and THERMOCAL). Theriak/Domino is too...
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Wentao
wentaocaouiowa
May 22, 2013 4:33 am
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Wentao
wentaocaouiowa
May 22, 2013 4:47 am
Hello, everyone, I am a newbie using Perple_X. I am trying to model a pseudosection for a metapelite in the system of MnNCKFMASHTO system. I chose solid...
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Jesse Walters
jesserockdude
May 22, 2013 5:00 am
Dear Wentao, I have a few questions. First, how did you determine your O2 (and therefore Fe2O3) content? Also, how have you determined your H2O content? What...
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Wentao
wentaocaouiowa
May 22, 2013 5:22 am
Dear Jesse, Thanks for your quick reply! I was normalizing the O2 content as to oxidize 10% FeO into Fe2O3. The H2O content was set at 3.0%. Actually, I...
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Jesse Walters
jesserockdude
May 22, 2013 5:34 am
Dear Wentao, I still find it interesting that you are not getting Bt. What mica model are you using? One suggestion is that if you are using the white mica...
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Wentao
wentaocaouiowa
May 22, 2013 5:47 am
Dear Jesse, What do you mean by saying "turned on the thermodynamic data for Ti?" I chose Pheng(HP) for K-mica, and Mica (M) for Na-mica. But there is also no ...
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Jesse Walters
jesserockdude
May 22, 2013 6:33 am
Dear Wentao, Because of the issues with some of the thermodynamic data, such as Ti for white mica, it's actually excluded in the thermodynamic data file. This...
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jadconnolly
May 22, 2013 12:27 pm
Wentao, I haven't digested the entirety of your email exchange with Jesse, but here a few technical points that I think Jesse may not have addressed: 1) oilm...
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Wentao
wentaocaouiowa
May 22, 2013 11:34 pm
Dear Jesse, Thanks for pointing out all these issues! For O2 content, maybe I did not explain quite clearly. I normalized O2 content to the content of...
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Wentao
wentaocaouiowa
May 22, 2013 11:53 pm
Hi Jamie, Thanks for clarifying these points to me! It helps a lot for understanding these different solution models. I am still struggling to get a reasonable...
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Jesse Walters
jesserockdude
May 23, 2013 2:36 am
Dear Wentao, As I mentioned previously, doing a pseudosection where you have pressure or temperature on the Y axis, and varying O2 (and therefore Fe2O3) on the...
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Wentao
wentaocaouiowa
May 23, 2013 5:26 am
Dear Jesse, Thanks a lot for helping me! I am trying to construct a P-X(O2) phase diagram. But I am still not good at this. I am following tutorials to build a...
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Michael Anenburg
manenbu@...
May 23, 2013 8:25 am
Just take the amount of H2O in each mineral (~3% for biotite and ~1% for actinolite for example) and multiply by the modal abundance of that mineral. In most...
611
bobmyhill
May 23, 2013 8:31 am
Dear Wentao, I've only just had a chance to look at your pseudosection, sorry for the late reply. It may be worth checking the models you've chosen with a...
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Wentao
wentaocaouiowa
May 24, 2013 4:22 am
Got it. Thanks, Michael!...
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Wentao
wentaocaouiowa
May 24, 2013 4:30 am
Dear Bob, Thanks for your kind reply! I am trying to figure that out, but I still have other problems. It seems like the vertex stopped somewhere. I tried to ...
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Reia Chmielowski
reiachmielowski
May 24, 2013 8:13 am
Greetings, I am wondering what solutions, if any, the rest of you have come up with for keeping track of the many various Perple_X runs that can be needed to...
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Michael Anenburg
manenbu@...
May 24, 2013 10:04 am
Hello Reia. It all depends on what you're actually trying to achieve. As you said, you mostly end up publishing only one diagram or two. I had a project where...
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Michael Anenburg
manenbu@...
May 24, 2013 10:06 am
But like someone said here, I think the best would be to produce a series of T-X(H2O) and T-X(O2) diagrams and see what makes sense. A lot of diagrams are made...
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lucie tajcmanova
lucietajcmanova
May 24, 2013 12:17 pm
wentao, i have not gotten through the whole discussion on your topic, but if i understood well, your rock is subsolidus, so if you have difficulties with ...
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Reia Chmielowski
reiachmielowski
May 24, 2013 2:47 pm
Hi Michael, I am not certain I agree with you on the premise that I don't need to organize everything. If the "failed" attempts aren't recorded and organized...
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Michael Anenburg
manenbu@...
May 24, 2013 4:49 pm
Hello Reia, ... be discarded, again. That sounds to me like a huge waste of time. I would much rather know what I have and have not tried--I found it hard...
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David
dhirsch
May 24, 2013 5:13 pm
Hi Reia- I did the exact thing you are interested in for a paper a while back, and I used BASH shell scripting on OS X to run Perplex and process all the...
