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Identity HelpFerro-winchite and the Bong Mine
24th Jun 2016 03:15 UTCD. Peck
24th Jun 2016 04:48 UTCAlfredo Petrov Manager
24th Jun 2016 06:49 UTCOlav Revheim Manager
I have kept it in as ferro-winchite on a "benefit of the doubt" basis so far, but as a header photo that is perhaps not sufficient.
On a more general basis, winchites are tricky minerals to identify even with microprobe as it is an intermediate composition between magnesio-hornblende and magnesio-arfvedsonite and their composition is generally close to either of these minerals or to richterite root name minerals. The intrinsic uncertainty in the Fe2/Fe3 calculations makes identification uncertain in most cases.
Olav
24th Jun 2016 18:55 UTCD. Peck
24th Jun 2016 23:55 UTCDavid Von Bargen Manager
25th Jun 2016 09:16 UTCPeter Kohorst
Why you did not asked me directly?
25th Jun 2016 13:57 UTCOlav Revheim Manager
I did contact you three or four years ago, you'll find the correspondance amongst your PM's. Your reply then was the same as now. The problem is that SEM-EDS and xrd is of little use in distinguishing Ferro-winchite from similar spesielt. I Hope this is an acceptable response from me, please let me know if you have further comments or questions
Olav
26th Jun 2016 08:18 UTCPeter Kohorst
yes, I understand, but I can't remember, what was 4 years ago and I delete my correspondence after some time, sorry. :-) But thank you for your response. Then, the next question is, what other analysing methods are senseful?
I think for example a microprobe (= Mikrosonde in German language) ? or others. What is the best method to analyse minerals from Amphibol-Supergroup or also from Pyroxen-Group?
Best regards
Peter
supplement:
On a more general basis, winchites are tricky minerals to identify even with microprobe as it is an intermediate composition between magnesio-hornblende and magnesio-arfvedsonite and their composition is generally close to either of these minerals or to richterite root name minerals
Sorry, I have seen now your other answer.
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