Formerly Kapnik, Hungary.
References:
- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 963, 1101.
- Huber, P. & Muresan, I. (1996): Mineralienübersicht der wichtigsten Bergbaue des Bezirkes Maramures. Lapis, 21 (7), 60. (in German).
- Szakáll, S., Ed. (2002): Minerals of the Carpathians. Christian Weise Verlag, Munich, Germany, 480 pp.
