Talk:Anthracite

message: Is there any information about existing reserves of anthracite coal, today?  Based on the means of mining anthracite coal in Pennsylvania (i.e. from mine slag heaps) it might be inferred that there is little coal left in Pennsylvania.  Can this be substantiated? L Hamm 16:09, 3 October 2006 (UTC)
thread_title:  Anthracite Coal Reserves 

message: This section deals solely with the US: the header should be adjusted accordingly.  I don't have the knowledge to add info from other parts of the world, sadly. 86.138.104.116 11:10, 11 February 2007 (UTC)
thread_title: Economic value

message: I thought that graphite is purer, although not commonly used to burn, it is still the purest amongst the coals. —The preceding unsigned comment was added by Exodii (talk • contribs) 08:42, 15 February 2007 (UTC)
thread_title:  Anthracite purest coal? 

message: Coal is not mineral. It is organic, or was, and therefore does not fit the defintion of a mineral. —The preceding unsigned comment was added by 76.64.188.31 (talk) 17:50, 29 April 2007 (UTC)
thread_title:  COAL IS NOT  A MINERAL 

message: This does seem to be only about the USA. could the title be changed to reflect this? Petethewhistle (talk) 17:56, 11 February 2008 (UTC)
replies: text: No, but you could add more info to give it a better worldwide view, if it seems too biased right now. 71.207.12.70 (talk) 04:23, 17 February 2008 (UTC)
thread_title: title

message: "Current anthracite production averages around 5 million tons per year."
Is that production of anthracite (a natural process) is around 5 million tons per year, or the mining of anthracite averages around 5 million tons per year?
Welshie (talk) 19:57, 3 April 2008 (UTC)
replies: text: I think it is supposed to be mine production but that figure is quite wrong anyway - it is not sourced and seems to be someone's guesswork so should be removed. China alone produces about 260 million tonnes of anthracite on top of about 2050 million tonnes of other coals--Mountwolseley (talk) 23:01, 17 February 2009 (UTC)
thread_title:  production vs extraction? 

message: Is there mercury in anthracite? Badagnani (talk) 04:41, 27 May 2008 (UTC)
thread_title:  [[Mercury]] content 

message: Underground fires
"Vents in uninhabited areas remain undiscovered."
Really?  How would you know?  Maybe someone found one.  —Preceding unsigned comment added by Fogus (talk • contribs) 07:36, 28 February 2009 (UTC)
thread_title:  Some parts are written strangely 

message: Dear Sir or Madam, where where used anthracite coal briquettes?
What tipe of binding substance where usualyy  used in the producing of anthracite coal briquettes?
Oleg  —Preceding unsigned comment added by 80.90.4.48 (talk) 12:34, 16 November 2009 (UTC)
thread_title:  Anthracite coal briquettes 

message: Short ton, long ton, hundred weights... can USA please get with it and stop being so damn retarded. Metric only please. (like the rest of the damn world).  —Preceding unsigned comment added by 115.70.80.179 (talk) 23:25, 3 September 2010 (UTC)
thread_title:  Metric vs Imperial 

message: I propose merging the High grade anthracite article with the Anthracite article based on WP:DICTIONARY. The information contained in the high grade article could be easily covered in the anthracite article. --Tobias1984 (talk) 17:59, 22 May 2012 (UTC)
thread_title:  Merging High grade anthracite into this page (Anthracite) 

message: The anthracite page currently does not really reflect the state of the global market, nor its uses. I've added a couple of paragraphs here and there, but in my opinion the page would benefit from some reworking. It still rather gives the impression that the industry is US-centric and largely extinct, neither of which is the case. While the historical US anecdotes are very interesting, could they perhaps be moved elsewhere? 
Another problem is that there is a shortage of suitable sources. I have access to a couple of industry reports from consulting firms, but they are not available on the Internet and as some information is commercially sensitive it would not be appropriate to upload them. I can summarise some of the contents, but then how to go about referencing it?
I've created a draft page in my userspace - would invite further comments and suggestions.
Apologies for any rules/protocol I may have infringed here due to being new and unaware, and thanks in advance for any assistance.
Pmorley1 (talk) 16:18, 29 May 2012 (UTC)
thread_title:  Some problems with this page 

message: The "Coal House" in Lewisburg, one of a few coal buildings in West Virginia, USA, and depicted in this article is made from high rank bituminous coal, not anthracite.  I have removed it as it is not relevant to the article.
The sedimentary rocks of the folded and thrust-faulted Appalachian Ridge-and-Valley province of the eastern USA, are in no way regarded as metamorphic rocks as they exhibit no mineralogical transformations.  Calling anthracite a metamorphic rock is dubious, as both bituminous and anthracite coal are just hydrocarbons (like petroleum) with much of their hydrogen removed by pyrolysis-like reactions and so are not minerals at all.  It have to be altered to graphite (which is a mineral) to be considered metamorphic.
PJD 108.17.71.242 (talk) 05:49, 20 December 2014 (UTC)
replies: text: Anthracite formation sits midway through the anchizone according to this book on low-grade metamorphism. The main mineralogical transformation associated with the very low grade metamorphism in the Appalachians is an increase in illite crystallinity, which correlates with coal rank and vitrinite reflectance (see this paper by Bayan et al). Mikenorton (talk) 11:53, 20 December 2014 (UTC)
thread_title:  Couple corrections 

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*Added archive https://web.archive.org/web/20050116090352/http://www.dep.state.pa.us:80/dep/deputate/enved/go_with_inspector/coalmine/Anthracite_Coal_Mining.htm to http://www.dep.state.pa.us/dep/deputate/enved/go_with_inspector/coalmine/Anthracite_Coal_Mining.htm
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thread_title:  External links modified 

message: At the time of writing, the article says: "It has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coal except for graphite."
According to this, then it is not. Graphite is. This line should not be here. Comments from mineralogy experts? -- Alexf(talk) 13:35, 2 November 2016 (UTC)
thread_title:  Superlatives? 

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thread_title:  External links modified 

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thread_title:  External links modified (January 2018)