Talk:Porphyry (geology)

message: Sixteenth-century "porphyry" in Poland and the Czech Republic, mentioned here, is something else: is it red granite? --Wetman 05:10, 14 January 2007 (UTC)
thread_title: Question

message: Since there is an aphanitic and phaneritic page, and since geologists do not use porphyry and porphyritic the same, and since all porphyritic rocks are NOT porphyrys, I am considering making a seperate page for porphyritic and replacing the redirect.  Thoughts? Qfl247 (talk) 19:27, 24 May 2010 (UTC)
replies: text: That makes sense, the section of the lede on 'porphyritic' sits a bit uneasily with the rest of the article I think. Mikenorton (talk) 19:54, 24 May 2010 (UTC)
thread_title: Porphyritic

message: Knowing next to nothing about geology, I decided to throw this one out on the Discussion page instead: "porhyros" means "crimson", not purple, in Greek. However, the rest of the related paragraph in the introduction refers to a purple rock. So, I do not know how that correction may affect said paragraph (unless I am mistaken and we are dealing with one of the multitude of English-Greek false friends. -Anagogist (talk) 01:56, 9 March 2011 (UTC)
thread_title:  Etymology 

message: The article lists Napoleon's tomb at Les Invalides as made of porphyry but elsewhere I have read it's actually red quartzite form Russia (or Finland, then part of the Russian Empire.
Since it has a reference, I had not corrected it.
Could somebody check?
--Error (talk) 23:30, 24 November 2012 (UTC)
replies: text: Looking at the most detailed pictures on Commons, it's definitely not a porphyry and red quartzite looks right - it's well-banded and there are microfaults offsetting the bands. Apparently he wanted the porphyry used by the Roman Emperors, but the red quartzite was the closest they could manage in appearance . Mikenorton (talk) 00:31, 25 November 2012 (UTC)

text: However, the source cited looks solid enough - after all the tomb is the book's whole subject. On the other hand various sources describe the rock as a red quartzite from Shoksha in Karelia, Finland. Mikenorton (talk) 00:54, 25 November 2012 (UTC)
replies: text: The Les Invalides article states: a tomb made of red quartzite and resting on a green granite base - and that image is not of a porphyry. I'd say chop the one-liner from the article as it doesn't add much and we seem to have disagreeing refs. Vsmith (talk) 01:53, 25 November 2012 (UTC)
thread_title:  Napoleon 

message: Hello fellow Wikipedians,
I have just added archive links to  on Porphyry (geology). Please take a moment to review my edit. If necessary, add  after the link to keep me from modifying it. Alternatively, you can add  to keep me off the page altogether. I made the following changes:
*Added archive https://web.archive.org/20120813210130/http://weekly.ahram.org.eg/1999/417/special.htm to http://weekly.ahram.org.eg/1999/417/special.htm
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Cheers. —cyberbot IITalk to my owner:Online 03:28, 18 October 2015 (UTC)
thread_title:  External links modified 

message: I'd like a map of the quarry location and the Roman via. --Error (talk) 00:09, 5 December 2016 (UTC)
thread_title:  Map