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

https://hrcak.srce.hr/296259

Datum izdavanja:

30.6.1993.

Posjeta: 157 *