CONDITIONS OF THE BE ORES FORMATION OF THE SNEZHNOE DEPOSIT (EASTERN SAYAN, RUSSIA)

摘要

Thus, it was found that all types of ores consistrnof the same minerals in various proportions. Basedrnon the ore mineral paragenesis, we suggest that oreformedrnsolutions were enriched by Be, F, K, Na, Si,rnAl, Fe and Ca. Ore formed by filling of cavities andrncracks due to the cooling of solutions, rather thanrnalteration of the wall rocks. Studied mineralrnparageneses allow us to estimate pH of thernsolutions. Solutions from I and IV types were nearneutralrnrather than alkaline or acidic. Solutionsrnforming II and III ore types had enhanced alkalinity.