engleski

Melanterite and rozenite from Allchar Mine, Macedonia

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. 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.

melanterite ; rozenite ; crystal morphology ; chemical content ; Allchar ; Macedonia

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