Talk:Perlite

Question

Where is an explaination for perlite as a pattern of steel? --217.235.9.187 20:56, 21 Mar 2005 (UTC)

You want Pearlite, not Perlite. -- 143.252.80.124 18:10, 20 July 2005

Image Request

Is it necessary? There are multiple photos in the article. I'd remove the reqphoto tag, but I want more input first.

AngryZinogre (talk) 05:01, 1 October 2017 (UTC)

Vermiculite Reference

Vermiculite was tagged here as only used in horticulture, which is not accurate. Perlite and Vermiculite are "cousins", with many exfoliators making products using both lightweight aggregates.--Achim 23:34, 27 August 2006 (UTC)

The reason was that horticulture is the main application in which vermiculite competes with perlite.

Similarly, diatomite, is not only used for filter-aids, but it is the main application in which diatomite competes with perlite.--FocalPoint 15:32, 28 August 2006 (UTC)

Element box

An element box is needed for this article.Anwar 16:05, 31 May 2007 (UTC)

fix dup ref

Someone might consider consolidating refs (currently #s 2+5) to "http://minerals.usgs.gov/minerals/pubs/commodity/perlite/mcs-2008-perli.pdf" (I don't remember how to do it; somehow involves assigning an ID to the first ref, then referencing that ID at subsequent citations).

philiptdotcom (talk) 13:39, 14 August 2009 (UTC)

 Done —EncMstr (talk) 15:45, 14 August 2009 (UTC)

Mineral composition?

Perlite is a rock name or perhaps primarily a rock name. What is the mineral composition of this rock? Is it perhaps microcrystalline vermiculite that gives the expansion?150.227.15.253 (talk) 09:43, 11 January 2018 (UTC)

Being an amorphous glass it has no mineral crystals, but the article includes a typical chemical composition. Vermiculite is a clay mineral, so the two are entirely unrelated. The expansion in perlite is also due to the evaporation of trapped water, but there the similarity ends. Mikenorton (talk) 10:12, 11 January 2018 (UTC)

External links modified (January 2018)

Hello fellow Wikipedians,

I have just modified one external link on Perlite. 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:

• Added archive https://web.archive.org/web/20050808082154/http://www.mii.org/Minerals/photoperlite.html to http://www.mii.org/Minerals/photoperlite.html

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

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).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 09:08, 22 January 2018 (UTC)

Density

The source that is given as proof of the density of perlite does not give any information on density. where does this information come from?  77.87.228.70 (talk) 11:41, 11 December 2024 (UTC)

Request information on ARTIFICIAL hydration of source rock for making Perlite

Considering the statement that Perlite is "a non-renewable resource" and the great usefulness of Perlite, particularly in expanded form, plus dependence on the NATURALLY hydrated source rock, Obsidian, I would like to know more about the possibilities of ARTIFICIAL hydration of source rock for making Perlite. From the related article on Obsidian, it seems likely that the hydration can be greatly accelerated by shattering Obsidian into dust. Is that not logical? Surely the non-hydrated source rock is not in short supply. Or is it? Also, are there other source rocks that might be used in place of Obsidian? As that Obsidian article states, "Obsidian is formed from quickly cooled lava. Extrusive formation of obsidian may occur when felsic lava cools rapidly at the edges of a felsic lava flow or volcanic dome, or when lava cools during sudden contact with water or air."

Please clarify and expand, if possible.

Thank you. YodaWhat (talk) 21:04, 12 October 2025 (UTC)