Naslov
Childrenite and crandallite from the Stari Trg mine (Trepča), Kosovo: new data

Autori
Bermanec, Vladimir ; Šćavničar, Stjepan ; Zebec, Vladimir

Izvornik
Mineralogy and Petrology (0930-0708) 52 (1995), 3-4; 197-208

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
childrenite; crandallite; eosphorite; Trepča

Sažetak
Childrenite and crandallite are described as two new phosphate members in the paragenesis of the Stari Trg mine which comprises vivianite, ludlamite and struvite. Crandallite crystals with very simple rhombohedral habit grow on rhombohedral carbonate and childrenite crystals. The crystal morphology of childrenite is very similar to that at described from other localities. Following forms were measured: {; ; 100}; ; , {; ; 100}; ; , {; ; 110}; ; , {; ; 120}; ; , {; ; 121}; ; , {; ; 221}; ; and {; ; 342}; ; . The average chemical composition is Ch91 Eo9 (Ch-childrenite, Eo-eosphorite). Pseudo-orthorhombic unit cell dimensions were calculated: a = 10.390(4) A, b = 13.390(4) A and c = 6.920(2) A. Growth sectors and sector twins of childrenite are described.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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