Two Paragenetic Types of Cookeite From the Dolní Bory-Hatě Pegmatites, Moldanubian Zone, Czech Republic: Proximal and Distal Alteration Products of Li-Bearing Sekaninaite

2015 ◽  
Vol 53 (6) ◽  
pp. 1035-1048
Author(s):  
Milan Novák ◽  
Renata Čopjaková ◽  
Marek Dosbaba ◽  
Michaela VAŠINOVÁ Galiová ◽  
Dalibor Všianský ◽  
...  
Keyword(s):  
Czech Republic ◽  
Moldanubian Zone

Apatite with lamellae of sulfide and other phases in ultrahigh-pressure eclogites from Nové Dvory, Moldanubian Zone, Czech Republic

2018 ◽  
Vol 83 (1) ◽  
pp. 95-105
Author(s):  
Shah Wali Faryad ◽  
Radim Jedlicka ◽  
Maria Perraki
Keyword(s):  
Czech Republic ◽  
Surface Charge ◽  
Closed System ◽  
Ultrahigh Pressure ◽  
Temperature Decrease ◽  
Moldanubian Zone ◽  
Sector Zoning ◽  
Growth Plane ◽  
Close Relationship ◽  
Preferential Uptake

AbstractExsolution lamellae of baryte, Fe sulfides, Cu sulfides and Fe oxides were observed in apatite enclosed in garnet and omphacite and their intergranular spaces in ultrahigh-pressure eclogite in the Moldanubian Zone, Czech Republic. Micro-textural relations and compositional mapping of the apatite indicates a close relationship between the density of the exsolution lamellae and compositional domains that are rich in sulfur and iron. No relation between compositional domains and fluorine or chlorine content or any evidence of apatite metasomatisation was observed. On the basis of cathodoluminescence images, the compositional domains reflect sector zoning in apatite crystals by preferential uptake of elements due to differences in surface charge and morphology on the growth plane. It is concluded that the lamellae are products of exsolution in a closed system resulting from temperature decrease during metamorphism.

scholarly journals Evidence for partial melting of eclogite from the Moldanubian Zone of the Bohemian Massif, Czech Republic

2016 ◽  
Vol 111 (6) ◽  
pp. 405-419 ◽  
Author(s):  
Takahiro MIYAZAKI ◽  
Daisuke NAKAMURA ◽  
Akihiro TAMURA ◽  
Martin SVOJTKA ◽  
Shoji ARAI ◽  
...  
Keyword(s):  
Czech Republic ◽  
Partial Melting ◽  
Bohemian Massif ◽  
Moldanubian Zone
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