Natura Croatica, Vol. 2 No. 1, 1993.
Kratko priopćenje
Melanterite and Rozenite from Allchar Mine, Macedonia
Vladimir Zebec
; Croatian Natural History Museum, Demetrova 1, 10000 Zagreb, Croatia
Vladimir Bermanec
; Department of Mineralogy and Petrology, Faculty of Sciences, University of Zagreb, Demetrova 1, Zagreb, Croatia
Darko Tibljaš
; Department of Mineralogy and Petrology, Faculty of Sciences, University of Zagreb, Demetrova 1, Zagreb, Croatia
Sažetak
In the old mine Allchar, situated near village Majdan, Macedonia greenish-blue crystals of melanterite were found, They are rich in crystal faces and following forms were measured by two circle reflecting goniometer: {001}, {010}, {110}, {103}, {101}, {111}, {121}, {123), {112} and {121}. Crystal form {123} is new for melanterite. Crystal habit is shown on Fig. 1. Chemical content is determined by ICP AES and gravimetric analysis (for SO3). Dehydration of melanterite to rozenite is observed on natural samples as well as in dry conditions of laboratory. Both minerals are determined by XRD powder method.
Ključne riječi
melanterite; rozenite; crystal morphology; chemical content; Allchar; Macedonia
Hrčak ID:
296259
URI
Datum izdavanja:
30.6.1993.
Posjeta: 304 *