![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
This article contains too much jargon to be accessible to people who are uninitiated in mineralogy/geology. I'd like to see a simple explanation to compliment the technical one soon please, otherwise I'll be tagging it as being too technical, which will eventually result in your work being deleted/heavily modified or totally replaced. As it is it barely conforms to wikipedia standards, with many key terms not linked and no glossary to substitute. This is to be expected with a new article but for gods sakes please get round to formatting it properly some time before the next ice age. -- Badharlick 12:00, 26 May 2006 (UTC)
I came here looking for information on exploited mica laborers in Southeast Asia... is that appropriate to add here? I'm not sure since most of the article is more scientific, although there is the "primitive" section.-- Applespeachespumpkinpie ( talk) 08:48, 17 July 2012 (UTC)
Sheets of mica called eisenglass were used in place of window glass(eisenglass curtins you can roll right down- From The Surrey with the Fringe on Top - Rogers and Hammersteins' "Oklahoma"
Removed from the article, pending some kind of explanation of its relevance:
I supplemented and kept, it should instead read something like
and should probably indicate which kind of mica.
But i frequently discover mica somewhere when hiking; i discovered it all over a parking lot in Wyoming in the 7th grade; i can't but imagine that it's been discovered and used over and over throughout human history, so it is irrelevant to the article in the absence of more context.
--
Jerzy
(t) 13:24, 2004 Jul 27 (UTC)
Mica is/was used in toasters as insulation. It does not conduct heat very well in the direction perpendicular to the cleavage planes. I'm not sure that it is used as much for this as it was in the past. --
Mica is used as an electrical insulator in some capacitors, allowing two conductors to be held in close proximity and hence have a high capacitance. I imagine this is less prevalent in the 21st century. Dizzley (Peter H) 13:26, 27 Jan 2005 (UTC)
Mica is described in this article as having highly perfect basal cleavage. How can something be highly perfect? Surely its either perfect or its not.(harrymousse- 05/06/07)
Where is mica found in the u.s. or not? where?!?! Where is mica found? Is it in the u.s.?
Sign your comments. Don't know about the U.S., but you find plenty of it in Cordoba, an Argentine province. Slartibartfast1992 23:03, 31 May 2007 (UTC)
"hydro-muscovite with H3+ along with K in the X site."
I do not believe that the H3+ ion exists.
Was H3O+ intended?
Michael H 34 16:52, 26 March 2007 (UTC) Michael H 34
______________________________________________________________________________
I just wanted to add that the reason I just searched for Mica to look at its properties in cosmetics. Most of the products that Bare Escentuals make are made with mica as its primary ingredient. I thought this would be something you may want to look at. 24.21.53.251 20:18, 16 August 2007 (UTC)
_____________________________________ The mica found in the "pyramid of the sun" was mined in Brazil... which is 2000 miles away, you can see the deposit on the map provided with this article. 2000 miles is not local to the area of the temples and pyramids. —Preceding unsigned comment added by 24.80.66.202 ( talk) 22:20, 28 November 2009 (UTC)
Does anyone understand what "This map is consistent with incomplete set of data too as long as the top producer is known" actually means? It does not make a great deal of sense to me. Also data should not be published if it is incomplete. —Preceding unsigned comment added by 81.157.127.176 ( talk) 21:52, 23 September 2007 (UTC)
Someone says that life originated between mica sheets. It's on LiveScience.
Luna''keet'' ( talk) 15:04, 15 March 2008 (UTC)
Perhaps the info. in this paper may be used in the article. MP ( talk• contribs) 11:22, 10 July 2008 (UTC)
Isnt it used as a glittery pigment in cosmetics? Only there is mica in my lipgloss. —Preceding unsigned comment added by 81.79.224.9 ( talk) 13:21, 25 October 2008 (UTC)
Removed the following from the article:
Seems a bit overdone for a hypothezised concept based on a "press release" type reference. Needs better refs and updated info if included. The Greenland-biotite links are maybe WP:SYNTH? Yes, there is biotite from Akilia Island - it was used to date the igneous gneiss. So was there biotite in the banded iron formation sediments that contain the carbon isotope evidence for ancient life? Rather tenuous connection seems to me. Solid refs needed. Vsmith ( talk) 02:19, 23 August 2009 (UTC)
The cite for "The largest sheet of mica ever mined in the world came from a mine in Denholm, Quebec, Canada." -" ^ "Denholm" (in French). MRC de La Vallée-de-la-Gatineau. http://www.mrcvg.qc.ca/textes/mun-denholm.shtml. Retrieved 2008-08-27." does not mention either the largetst piece of Mica; or anything else about mica (and yes I read french fluently). Either provide a real citation or get rid of this tidbit. 76.75.84.52 ( talk) 02:07, 24 June 2010 (UTC)
"The mica found in the pyramid of the sun has been identified as mined in Brazil, that is 3400 km from the pyramid complex." That's just plain wrong. The citation at the bottom ( http://books.google.com/books?id=sIYpx9mzd4gC&pg=PA102&hl=en#v=onepage&q=mica&f=false) is telling us the exact opposite of what is written in the article. The mica came from a local quarry near Teotihuacan, not from Brazil. This should be fixed. —Preceding unsigned comment added by 92.224.6.12 ( talk) 22:21, 8 July 2010 (UTC)
From time to time one hears of a substance called "motor mica," a fine white powder used as dry lubricant in some types of electric motors, among other things. It is similar to powdered graphite in some of its properties, but is a dielectric.
Is this a powdered form of the same substance the main article discusses, or is it something else entirely? The article mentions a number of uses for mica and speaks at length about its properties but if it is a useful dry lubricant when finely ground, the article does not tell us. —Preceding unsigned comment added by 69.41.40.21 ( talk) 18:57, 29 August 2010 (UTC)
The formula for mica in English seems incorrect. It seems the formula is double the amount it should be as compared to the articles in other languages, as well as compared to the specific mica formulas found in English articles like biotite, muscovite, etc. Could someone with knowledge in this subject please update this, as I am not expert enough, and don't want to change things that are so specifically sourced (although source from 1966, and not internet accessible could use an update anyway)
English: X2 Y4–6 Z8 O20(OH,F)4 German: D G2,3 [T4 O10] X2 French: A C2-3 T4 O10 X2 Dutch: (AB2-3X,Si)4 O10(O,F,OH)2
Not really bothered to make all subscripts appear as subscripts (just visit the different pages yourself if they confuse here) 217.122.71.201 ( talk) 18:23, 24 August 2014 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Mica. 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.— cyberbot II Talk to my owner:Online 00:22, 2 April 2016 (UTC)
How can this be and in the next paragraph China doesn't even appear on the list of major producers? Gjxj ( talk) 13:25, 18 November 2019 (UTC)
Sheet mica was one of the products of forced labour at this establishment. As the place has its own article, details of the workers and the production methods there are off topic in this article dealing with the mineral itself. I propose deletion. -- AntientNestor ( talk) 08:43, 1 September 2022 (UTC)