Английская Википедия:Cahnite
Шаблон:Infobox mineral Cahnite (Cahnit in German, Cahnita in Spanish, Канит in Russian[1]) is a brittle white or colorless mineral that has perfect cleavage and is usually transparent. It usually forms tetragonal-shaped crystals and it has a hardness of 3 mohs.[2][3] Cahnite was discovered in the year 1921.[1] It was named Cahnite to honor Lazard Cahn (1865–1940), who was a mineral collector and dealer.[2] It is usually found in the Franklin Mine, in Franklin, New Jersey,[3][2] but has also been found in Japan[4] as well as in the Vallerano quarries in Rome, Italy.[5] The geological environment that it occurs in is in pegmatites cutting a changed zinc orebody.[1][2][3] The chemical formula for cahnite is Ca2B[AsO4](OH)4.[3][6][7] It is made up of 26.91% calcium, 3.63% boron, 25.15% arsenic, 1.35% hydrogen, and 42.96% oxygen. It has a molecular weight of 297.91 grams.[3] Cahnite is not radioactive.[2] Cahnite is associated with these other minerals: willemite, rhodonite, pyrochroite, hedyphane, datolite, and baryte.[1]
References
- ↑ 1,0 1,1 1,2 1,3 Mindat data sheet for Cahnite.
- ↑ 2,0 2,1 2,2 2,3 2,4 Mineral Data sheet for Cahnite.
- ↑ 3,0 3,1 3,2 3,3 3,4 Database entry from Mineral Collecting.Шаблон:Dead link
- ↑ Article stating that veins of cahnite were found in Okayama Prefecture. Шаблон:Webarchive
- ↑ Шаблон:Cite web
- ↑ Database entry for Cahnite from Mincryst.
- ↑ Database entry for Cahnite from Japanese database.
