Pickeringite, Halotrichite and Niter from the Gold-Silver Deposit Obichnik (Eastern Rhodopes, Bulgaria)

Kunov, A. / Velinov, I. / Nakov, R. | British Library Online Contents | 1995

Adularia-Sericite Type of Wall-Rock Alteration of the Epithermal Au-Ag Mineral Occurrence of Obichnik (Eastern Rhodopes, Bulgaria)

Kunov, A. / Velinov, I. / Yanev, Y. et al. | British Library Online Contents | 1994

Andesitic Obsidian from the Dambalak Oligocene Volcano (Eastern Rhodopes)

Yanev, Y. / Todorova, S. / Bardintzeff, J.-M. et al. | British Library Online Contents | 1997

Granites from the Bela reka Uplift Periphery, Eastern Rhodopes

Belmustakova, H. / Boyanov, I. / Ivanov, I. et al. | British Library Online Contents | 1995

A New Genetic Type of Zeolitic Rock in the Northeastern Rhodopes, Bulgaria

Djourova, E. / Milakovska, Z. | British Library Online Contents | 1993