Filamentary native gold from the Elatsite porphyry Cu-Au deposit ...

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Au-Ag-Te-Se depositsIGCP Project 486, 2005 Field Workshop, Kiten, Bulgaria, 14-19 SeptemberIvan K. Bonev, Rumen Petrunov, Radostina AtanassovaGeological InstituteBulgarian Academy of Sciences1113 Sofia, Bulgaria;E-mail: bonev@geology.bas.bg
Native gold is known in highly variable morphology- As octahedral, cubic, dodecahedral and more complex crystals- In skeletal and dendritic forms- As irregular grains- As prismatic elongated or platy grains- Rarely, as hair-like and fine fibrous formationsPetrovskaya (1973) assigned them to a morphogenetic type of notwellbounded and rounded crystals
Page 1: Filamentary native gold fromthe Ela
Page 5 and 6: A group of filamentsAn enlargeddeta
Page 7 and 8: Single crystal filament with change
Page 9 and 10: A fibre with longitudinal (111) twi
Page 11 and 12: cDifferent tips of goldfilaments: a
Page 13 and 14: Complex steppedsurfaces of somefila
Page 15 and 16: The ElatsitedepositChemical composi
Page 17 and 18: 10 µmFilamentary crystals ofdiffer
Page 19: Conclusions- The rare in nature fil

Filamentary native gold from the Elatsite porphyry Cu-Au deposit ...

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