Chemistry:Zultanite
Zultanite is a gem variety of the mineral diaspore, mined in the İlbir Mountains of southwest Turkey at an elevation of over 4,000 feet.[1] The mineral's name is a trade name and is equivalent to the trade name Csarite.[2]
Turkey is the only place where the gem quality material has been found,[3]: 154 and at the Ilbir Dağ deposit it has been "formed in open spaces by hydrothermal remobilization of bauxite components".[1] The gem quality material was first discovered in the early 1980s.[4]
Zultanite has a hardness of 6.5 to 7.[5] Depending on its light source, zultanite's color varies between a yellowish green, light gold, and purplish pink.[1] Its color can be pastel green in outdoor light and beige pink in incandescent light.[6]: 105
References
- ↑ 1.0 1.1 1.2 Hatipoğlu, Murat; Türk, Necdet; Chamberlain, Steven C.; Akgün, A. Murat (February 2010). "Gem-quality transparent diaspore (zultanite) in bauxite deposits of the İlbir Mountains, Menderes Massif, SW Turkey". Mineralium Deposita 45 (2): 201–205. doi:10.1007/s00126-009-0262-2. Bibcode: 2010MinDe..45..201H.
- ↑ Rosen, Lisa. "A Short History of Diaspore and its trade names Zultanite and Csarite". https://www.gemsociety.org/article/short-history-diaspore-trade-names-zultanite-csarite/.
- ↑ (in en) PROCEEDINGS 4th International Congress on "Science and Technology for the Safeguard of Cultural Heritage in the Mediterranean Basin" VOL. II. Angelo Ferrari. ISBN 978-88-96680-32-2. https://books.google.com/books?id=uuRLHs472RsC&dq=Zultanite&pg=PA154.
- ↑ "New Acquisitions - Diaspore". http://mineralsciences.si.edu/collections/newacquisitions/2008/diaspore08.htm.
- ↑ "Zultanite: A Color Changing Stone" (in en). https://www.geologyin.com/2020/07/zultanite-color-changing-stone.html.
- ↑ (in en) Jewelry & Gems - The Buying Guide, 7th Edition. Gemstone Press. 2009. ISBN 978-0-943763-71-2. https://books.google.com/books?id=WUBWz22wRtEC&dq=Zultanite&pg=PA206.
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