Talk:Nepheline

Geology Mid‑importance

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Rocks and minerals Mid‑importance

	Earth sciences portal Nepheline is part of WikiProject Rocks and minerals, an attempt at creating a standardized, informative, comprehensive and easy-to-use rocks and minerals resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.Rocks and mineralsWikipedia:WikiProject Rocks and mineralsTemplate:WikiProject Rocks and mineralsRocks and minerals articles
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Funny[edit]

I think this sentence is perhaps a bit funny. "It is very occasionally found in mica schist and gneiss."

Someone who agrees?

What is the stuff for?!?![edit]

Ok...now that we know...

Nepheline, also called nephelite (from Greek: nephos, "cloud"), is a feldspathoid: a silica-undersaturated aluminosilicate, Na3KAl4Si4O16, that occurs in intrusive and volcanic rocks with low silica, and in their associated pegmatites. It is very occasionally found in mica schist and gneiss.

...what the heck is the stuff most commonly used for?!?! That should be in the first paragraph as well. —Preceding unsigned comment added by 199.227.45.26 (talk • contribs) 14:49, 18 November 2007

Mother nature uses it to make quartz free igneous rocks. In some regions these rocks hold up trees and houses... Some of these rocks, nepheline syenite, are used in glassmaking. Why should that be in the first paragraph? Vsmith (talk) 15:04, 18 November 2007 (UTC)[reply]

I agree - nepheline is a major resource in Kyrgyzstan. But what is it used for? —Preceding unsigned comment added by 75.108.249.4 (talk) 13:52, 13 June 2010 (UTC)[reply]

Radioactivity[edit]

NaAlSi04 is not radioactive but KNa3Al4Si4O16 which is the typical composition of natural nepheline would be very sligtly radioactive due to the potassium.95.192.20.73 (talk) 23:59, 26 November 2017 (UTC)[reply]