[1] Friedrich Schiller Univ, Inst Geosci, Burgweg 11, D-07749 Jena, Germany
[2] Comenius Univ, Dept Mineral & Petrol, Mlynska Dolina G, Bratislava 84215, Slovakia
[3] Goethe Univ, Dept Geosci, Altenhoferallee 1, D-60438 Frankfurt, Germany
[4] Slovak Acad Sci, Earth Sci Inst, Dubravska Costa 9,POB 106, Bratislava 84005, Slovakia
[5] State Geol Inst Dionyz Stur, Mlynska Dolina 1, Bratislava 81704, Slovakia
[6] Natl Museum, Dept Mineral & Petrol, Cirkusova 1711340, Prague 19300 9, Czech Republic
[7] Univ Salzburg, Dept Chem & Phys Mat, Jakob Haringer Str 2a, A-5020 Salzburg, Austria
[8] Slovak Acad Sci, Earth Sci Inst, Dumbierska 1, Banska Bystrica 97411, Slovakia
[9] Czech Acad Sci, Inst Geol, Rozvojova 269, Prague 16500 6, Czech Republic
[10] Czech Geol Survey, Geol 6, Prague 15200 5, Czech Republic