Montmorillonite from Bulgaria


Bulgaria
Dobrich Province Balchik Municipality Obrochishte ⓘ Obrochishte deposit	Kanazirski, M. (1985): Origin of manganese ore in the Obrochishte deposit as determined by the chemical processes of ore formation. Doklady Bolgarskoi Akademii Nauk 38(7), 879-882. Aleksiev, B. (1967): Barite in manganese ore deposits of Obrochishte. Doklady Bolgarskoi Akademii Nauk 20(10), 1053-1055 (in Russian).
Haskovo Province Mineralni Bani Municipality Spahievo Spahievo ore field ⓘ Chala mine	Kunov, A. & Petrov, P. (2001): Beaverite from the Chala gold-base metal ore deposit: a new mineral for Bulgaria. Geokhimiya, Mineralogiya i Petrologiya 38, 67-71.
Kardzhali Province Kardzhali Municipality Beli Plast ⓘ Beli Plast complex	Dimowa, Louiza, Nadia Petrova, Yana Tzvetanova, Ognyan Petrov, and Iskra Piroeva. (2022) "Structural Features and Thermal Behavior of Ion-Exchanged Clinoptilolite from Beli Plast Deposit (Bulgaria)" Minerals 12, no. 12: 1576. https://doi.org/10.3390/min12121576 Georgiev, V., Kolkovski, B., Metodiev, N., & Milovanov, P. (2002). Metallogeny of the Zlatoustovo volcanotectonic depression (Estern Rhodopes). Аnn. Univ. Min. and Geol, 45(1), 51-56.
Sofia City Province Stolichna Municipality ⓘ Lozen	Georgiev, V., Kolkovski, B., Metodiev, N., & Milovanov, P. (2002). Metallogeny of the Zlatoustovo volcanotectonic depression (Estern Rhodopes). Аnn. Univ. Min. and Geol, 45(1), 51-56.

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