Shkol'nik,E.L., Zhegallo,E.A., Baturin,G.N., Khamkhadze,N.I., Eganov,E.A. and Kuz'mina,T.G.(2010): Phosphorites of the Chiatura manganese deposit and specific features of their formation. Lithology and Mineral Resources, 45(3), 275-284.

『チアツラマンガン鉱床の燐灰岩およびその形成の特徴』


Abstract
 The paper presents results of the detailed study of phosphorites from manganiferous beds of the Chiatura deposit. The relatively high -grade (P2O5 20-28%) phosphorites are represented by various rocks ranging from the variety dominated by massive phosphates with a rare aleuritic admixture of quartz and feldspar grains to rocks mainly composed of terrigenous material with phosphates in the matrix. Phosphates make up the matrix of various organic remains: differently preserved diatom algae and microbial species. Some relatively large organic remains (in particular, sponge spicules) are typically composed of iron minerals (with manganese admixture) rather than phosphates. Manganese ores comprise phosphorite fragments composed of phosphatized cyanobacterial mat. Phosphorites of the Chiatura deposit were likely formed in a shallow-water zone away from the continental land.』

(Introduction)
Materials and methods
Results
Discussion
Acknowledgments
References


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