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Commercial use

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Only part of catalytic converters are made from cordierite. And this is cordierite ceramic and not cordierite mineral, which are different. Typical misinformation or misinformed Wikipedia information. —Preceding unsigned comment added by 210.54.238.178 (talk) 06:33, 19 March 2009 (UTC)[reply]

Baking stones

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Baking stones are sometimes made of something they call cordierite. My guess is that this is a ceramic, perhaps containing this mineral. One seller of these describes it as a "high-performance industrial refractory material used in commercial deck ovens. Stable up to 2500F. Highly resistant to thermal shock. FDA approved for use in ovens." ([1])

I don't have enough information about this to be confident about adding it to the entry, but perhaps someone out there who knows more about it, or knows that is is common in industrial baking, could add something.--Ericjs (talk) 14:34, 25 September 2009 (UTC)[reply]

Assessment comment

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The comment(s) below were originally left at Talk:Cordierite/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

expansion required on Iolite (gemstone). SauliH 15:17, 22 January 2007 (UTC)[reply]

Last edited at 15:17, 22 January 2007 (UTC). Substituted at 12:16, 29 April 2016 (UTC)

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Fix this article

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I don't know why, but articles on scientific and technical topics in Wikipedia often seem to be written in advanced, self-referent language, as manuals for those in the field or who know the topic already, defeating the purpose of Wikipedia. Get to the advanced stuff; fine. But start with the simple stuff.

1. Look at this unbelievable start of the article (excuse the pasted-in plain-text de-subscripted numbers in the formulas):

Cordierite (mineralogy) or iolite (gemology) is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with a series formula: (Mg,Fe)2Al3(Si5AlO18) to (Fe,Mg)2Al3(Si5AlO18). A high-temperature polymorph exists, indialite, which is isostructural with beryl and has a random distribution of Al in the (Si,Al)6O18 rings.

You call that a definition of an encyclopedia topic? It's a mere page of a Ph.D. thesis, taken out of context and making sense only to a specialist.

2. Your first sentence begins:

"Cordierite (mineralogy) or iolite (gemology) is ...

It's not English. When's the last time you read an English sentence, four of the first five words of which are nouns, strung together unintelligibly? And parentheses are rarely legitimate in English writing. Get rid of them and reword the sentence, with proper linking rhetoric standing in for them.

3. You are telling us that cordierite is not a mineral. Read the first sentence. Where do you tell us it's a mineral? All you say is that cordierite is a yadda-yadda cyclosilicate. What reader knows what a cyclosilicate is? It'd be like saying, in an article about, say, Honda Civic, "The Civic is a model of Honda," without telling us what a Honda is—a car. Since I have to be obvious, here's what the reader expects, and needs, to see when they go to an encyclopedia: "Cordierite is a [if desired, insert adjectival phrase here—even cyclosilicate?] mineral." So do it.

And here I am, a man on the street, telling ostensibly elite scientists how to write. Unbelievable.

Jimlue (talk) 18:53, 18 May 2022 (UTC)[reply]