Nabesite

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Chris.urs-o (talk | contribs) at 14:19, 26 July 2016. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Nabesite is a rare silicate mineral of the zeolite group with the chemical formula Na2BeSi4O10·4(H2O). It occurs as colorless to white orthorhombic crystals in thin platy mica like sheets. It has the zeolite structure. Its Mohs hardness is 5 to 6 and its specific gravity is 2.16. The reported refractive index values are nα=1.499, nβ=1.507, and nγ=1.511.

It was discovered in the Ilimaussaq intrusive complex, of southwest Greenland, and first recognized in 2000. It occurs in tugtupite-bearing albitite, a rare highly alkaline igneous rock.

References

External links


Stub icon

This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Nabesite&oldid=731622676"