1) Sodium mineral
Found on
https://www.crosswordclues.com/clue/nosean
Nosean, also known as Noselite, is a mineral of the feldspathoid group with formula: Na8Al6Si6O24(SO4). It forms isometric crystals of variable color: white, grey, blue, green, to brown. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 2.3 to 2.4. It is fluorescent. It is found in low silica igneous rocks. There is a solid solution bet...
Found on
http://en.wikipedia.org/wiki/Nosean
variety of the feldspathoid mineral sodalite (q.v.).[1 related articles]
Found on
http://www.britannica.com/eb/a-z/n/57
Nosean is a sodium aluminium silicate sulphate mineral with a vitreous lustre discovered by the German mineralogist Karl Nose, after whom it is named, and confirmed as a distinct species in 1815. Nosean is found in extrusive igneous rocks, especially in alkali-rich, silica-poor lavas, and in phonolite. It has a relative hardness of 5 to 5.5.
Found on
http://www.probertencyclopaedia.com/browse/HN.HTM
No exact match found.
