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Advertizing deleted. Wikipedia is not for free advertizing. Vsmith 02:45, 9 Feb 2005 (UTC)
the Greek word χαλκεδονιος is found more than once. See, e.g., the Acts of Thomas 108. 128.36.154.202 ( talk) 18:08, 5 April 2011 (UTC)
Also the Bauer-Danker lexicon (p. 1076) says that Pliny (NH 37, 7, 92ff) calls Jasper and a "certain kind of emerald" Chalcedonian Ll1324 ( talk) 20:56, 14 May 2014 (UTC)
I have created a "Varieties" section which systematically considers each variety in turn. It still needs a lot of work (to add a fuller description of each variety), and I will improve on it later. (I have also moved some content into a "History" section.) Hyperdeath ( talk) 12:50, 21 March 2008 (UTC)
"Plasma is a bright to emerald-green chalcedony that is sometimes found with small spots of jasper resembling blood drops; it has been referred to as blood stone or heliotrope."
Is it possible that the link to haematite (also sometimes known as 'blood stone') is incorrect? As far as I'm aware, haematite does not fit the description of a 'bright to emerald-green chalcedony'.
Sorry about the posting. I don't know the etiquette of adding things to pre-existing pages. But I'd like to add some basic applied geochemistry to this page if thats possible. Cheers.
The article provides an outdated theory as to chalcedony's composition, namely that it's a form of quartz. It is now known to contain moganite: http://www.mindat.org/min-960.html Hyperdeath 18:00, 27 April 2007 (UTC) (time approximate -- forgot to add signature)
Added a reference for the moganite info. Rickert 03:38, 28 April 2007 (UTC)
I have edited the geochemistry section to reflect the fact that chalcedony and quartz are not crystallographically identical. Hyperdeath 11:37, 29 April 2007 (UTC)
I have cleaned up the varieties section slightly. Hyperdeath 11:37, 29 April 2007 (UTC)
I have tagged Aventurine with a merge to Chalcedony tag. All of the information in the Aventurine article is unreferenced and much duplicates the information that is here. -- Kevmin ( talk) 02:46, 6 October 2009 (UTC)
Text and/or other creative content from Aventurine was copied or moved into Chalcedony with [permanent diff this edit]. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Gem-fanat ( talk) 19:38, 22 December 2009 (UTC)
It should not appear on this page. Chalcedony is a microcrystalline quartz whereas aventurine is a crystalline quartz with small inclusions of other materials. I have consulted the "Glossary of Geology" and the "Dictionary of Gems and Gemology" to confirm this. — Preceding unsigned comment added by 24.101.250.87 ( talk) 20:59, 7 September 2012 (UTC)
Hey, I just wanted to point out that in the intro block of this page, the following statement occurs: "according to the OED a connection with the town of Chalcedon in Asia Minor is 'very doubtful'". Then, later on under "History" it reads, "The term chalcedony is derived from the name of the ancient Greek town Chalkedon in Asia Minor, in modern English usually spelled Chalcedon...". The latter statement has no citation; it might be worth finding one, and rewording things to point out this conflict in opinion Opensourcejunkie ( talk) 18:52, 17 December 2012 (UTC)
I notice a header about imitations?
I saw this "synthetic" bracelet at
http://www.alibaba.com/product-gs/642218093/Synthetic_gemstone.html
Model Number: SHSB-034, Gemstone Type: Mineral Gemstones,
Gemstone Material: Chalcedony, Treatments Applied: Other,
Optical Special Effects: Pleochroic/Pleochroism, material: cat eyes stone.
There are many variations nearby. Photos look like tiger eye.
--
68.127.93.12 (
talk)
23:07, 23 March 2013 (UTC)Doug Bashford
Just to remark that the Intro section implicitly dates Pliny's work prior to the book of Revelations. "Natural History" is confidently dated about 78AD but Revelations is hard to date. It seems to me that the latest authoritative dating is J.A.T Robinson's "Redating the New Testament" (1976), and he dates Revelations c.61AD. Thus Revelations was prior to Pliny. I have adjusted to wording to reflect this. C.jeynes ( talk) 16:36, 11 July 2014 (UTC)
I never heard the term "hapax legomenon," and found the sentence distracting and confusing. I would have preferred to remove it in my latest revision [02:53, 30 June 2016] https://en.wikipedia.org/?title=Chalcedony&oldid=727610801. But I only clarified the sentence, deferring to the judgment of a more experienced contributor. Just because there is a formal term for what one is describing does not mean it needs to be introduced, to create a teaching moment. In summary: "found nowhere else" is educational but I don't think the Greek term itself adds to the value of the page and should be removed. — Preceding unsigned comment added by Cab.jones ( talk • contribs)
Hello fellow Wikipedians,
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Sometimes white chalcedony is flourescent from uranium. Bluish under long wave, green under short wave. There is an image from wikimedia upload.wikimedia. org/wikipedia/commons/1/10/Quartz-159524.jpg that a logged in person could put on the main page. — Preceding unsigned comment added by 97.90.99.62 ( talk) 19:57, 27 December 2016 (UTC)
There is a discussion at Talk:Pietersite § Should not direct to Tiger's Eye related to this page. Please join in the discussion. Primefac ( talk) 11:42, 3 September 2023 (UTC)
This
level-5 vital article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
Advertizing deleted. Wikipedia is not for free advertizing. Vsmith 02:45, 9 Feb 2005 (UTC)
the Greek word χαλκεδονιος is found more than once. See, e.g., the Acts of Thomas 108. 128.36.154.202 ( talk) 18:08, 5 April 2011 (UTC)
Also the Bauer-Danker lexicon (p. 1076) says that Pliny (NH 37, 7, 92ff) calls Jasper and a "certain kind of emerald" Chalcedonian Ll1324 ( talk) 20:56, 14 May 2014 (UTC)
I have created a "Varieties" section which systematically considers each variety in turn. It still needs a lot of work (to add a fuller description of each variety), and I will improve on it later. (I have also moved some content into a "History" section.) Hyperdeath ( talk) 12:50, 21 March 2008 (UTC)
"Plasma is a bright to emerald-green chalcedony that is sometimes found with small spots of jasper resembling blood drops; it has been referred to as blood stone or heliotrope."
Is it possible that the link to haematite (also sometimes known as 'blood stone') is incorrect? As far as I'm aware, haematite does not fit the description of a 'bright to emerald-green chalcedony'.
Sorry about the posting. I don't know the etiquette of adding things to pre-existing pages. But I'd like to add some basic applied geochemistry to this page if thats possible. Cheers.
The article provides an outdated theory as to chalcedony's composition, namely that it's a form of quartz. It is now known to contain moganite: http://www.mindat.org/min-960.html Hyperdeath 18:00, 27 April 2007 (UTC) (time approximate -- forgot to add signature)
Added a reference for the moganite info. Rickert 03:38, 28 April 2007 (UTC)
I have edited the geochemistry section to reflect the fact that chalcedony and quartz are not crystallographically identical. Hyperdeath 11:37, 29 April 2007 (UTC)
I have cleaned up the varieties section slightly. Hyperdeath 11:37, 29 April 2007 (UTC)
I have tagged Aventurine with a merge to Chalcedony tag. All of the information in the Aventurine article is unreferenced and much duplicates the information that is here. -- Kevmin ( talk) 02:46, 6 October 2009 (UTC)
Text and/or other creative content from Aventurine was copied or moved into Chalcedony with [permanent diff this edit]. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Gem-fanat ( talk) 19:38, 22 December 2009 (UTC)
It should not appear on this page. Chalcedony is a microcrystalline quartz whereas aventurine is a crystalline quartz with small inclusions of other materials. I have consulted the "Glossary of Geology" and the "Dictionary of Gems and Gemology" to confirm this. — Preceding unsigned comment added by 24.101.250.87 ( talk) 20:59, 7 September 2012 (UTC)
Hey, I just wanted to point out that in the intro block of this page, the following statement occurs: "according to the OED a connection with the town of Chalcedon in Asia Minor is 'very doubtful'". Then, later on under "History" it reads, "The term chalcedony is derived from the name of the ancient Greek town Chalkedon in Asia Minor, in modern English usually spelled Chalcedon...". The latter statement has no citation; it might be worth finding one, and rewording things to point out this conflict in opinion Opensourcejunkie ( talk) 18:52, 17 December 2012 (UTC)
I notice a header about imitations?
I saw this "synthetic" bracelet at
http://www.alibaba.com/product-gs/642218093/Synthetic_gemstone.html
Model Number: SHSB-034, Gemstone Type: Mineral Gemstones,
Gemstone Material: Chalcedony, Treatments Applied: Other,
Optical Special Effects: Pleochroic/Pleochroism, material: cat eyes stone.
There are many variations nearby. Photos look like tiger eye.
--
68.127.93.12 (
talk)
23:07, 23 March 2013 (UTC)Doug Bashford
Just to remark that the Intro section implicitly dates Pliny's work prior to the book of Revelations. "Natural History" is confidently dated about 78AD but Revelations is hard to date. It seems to me that the latest authoritative dating is J.A.T Robinson's "Redating the New Testament" (1976), and he dates Revelations c.61AD. Thus Revelations was prior to Pliny. I have adjusted to wording to reflect this. C.jeynes ( talk) 16:36, 11 July 2014 (UTC)
I never heard the term "hapax legomenon," and found the sentence distracting and confusing. I would have preferred to remove it in my latest revision [02:53, 30 June 2016] https://en.wikipedia.org/?title=Chalcedony&oldid=727610801. But I only clarified the sentence, deferring to the judgment of a more experienced contributor. Just because there is a formal term for what one is describing does not mean it needs to be introduced, to create a teaching moment. In summary: "found nowhere else" is educational but I don't think the Greek term itself adds to the value of the page and should be removed. — Preceding unsigned comment added by Cab.jones ( talk • contribs)
Hello fellow Wikipedians,
I have just modified 3 external links on Chalcedony. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 03:09, 19 November 2016 (UTC)
Sometimes white chalcedony is flourescent from uranium. Bluish under long wave, green under short wave. There is an image from wikimedia upload.wikimedia. org/wikipedia/commons/1/10/Quartz-159524.jpg that a logged in person could put on the main page. — Preceding unsigned comment added by 97.90.99.62 ( talk) 19:57, 27 December 2016 (UTC)
There is a discussion at Talk:Pietersite § Should not direct to Tiger's Eye related to this page. Please join in the discussion. Primefac ( talk) 11:42, 3 September 2023 (UTC)