Металлы платиновой группы это важнейшее стратегическое сырье, в связи, с чем потребность в их обнаружении представляет очень важную задачу для геологии. С каждым годом увеличивается потребность в золоте и металлах платиновой группы. К числу перспективных на благороднометалльное оруденение относится Центральный регион России. Необходимо развитие социально-экономического положения этого региона за счет увеличения минерально-сырьевой базы.

1. Геологическое строение и полезные ископаемые водораздела рек Нижней Тунгуски, Сухой Тунгуски и Бахты

Геолого-петрологический очерк сульфидных и железорудных месторождений реки Северной (бассейн реки нижней Тунгуски)

Many of the methods now used for gold extraction are based on techniques that have been known or established for centuries. Gravity concentration, amalgamation, cyanide leaching, chlorination, zinc precipitation, and carbon/charcoal adsorption are all processes that have been used for at least a hundred years, and combinations of these remain as the basis for most gold recovery flowsheets.

В дайной брошюре обобщен опыт работы центральной и экспедиционных лабораторий Северо-Западного геологического управления Министерства геологии и охраны недр СССР по организации и производству массовых анализов руд и пород, содержащих редкие элементы: ниобий, тантал, бериллий, цирконий, литий, рубидий, цезий и группу редких земель.

GAROFALO, P. S. & RIDLEY, J. R. Gold-transporting hydrothermal fluids in the Earth’s crust: an introduction
POKROVSKI, G. S., AKINFIEV, N. N., BORISOVA, A. Y., ZOTOV, A. V. & KOUZMANOV, K. Gold speciation and transport in geological fluids: insights from experiments and physical-chemical modelling
GAROFALO, P. S., FRICKER, M. B., GU¨ NTHER, D., BERSANI, D. & LOTTICI, P. P. Physical-chemical properties and metal budget of Au-transporting hydrothermal fluids in orogenic deposits

Within the last decade, the high and continuing demand for gold has prompted a global gold rush on a scale never before seen, not even in the heady days of Ballarat, California and the Yukon. Gold is being sought on every continent and, with very few exceptions, in every country around the world. Such interest and fierce competition has demanded considerable innovation and improvement in exploration techniques paralleled by a rapid expansion of the geological database and consequent genetic modelling for the many different types of gold deposits now recognized.

The Republic of South Africa is a metal producer of the first rank. Gold is the most important of the metals and up to the end of 1971, U.S.$ 32 billion had been realized from its sale. This figure was equivalent to 80% of the total value of all metals sold. The gold province is located on the Kaapvaal craton which is composed of Precambrian sedimentary-volcanic and granite-greenstone assemblages ranging in age from 1,750 to 3,500 million years. This craton forms the southern part of the Southern African Shield. No significant gold mineralization has yet been found beyond the boundaries of this shield. On the Kaapvaal craton, five Proterozoic sedimentary-volcanic basins lie on an Archean basement.  <...>

The geology, tectonics and stratigraphy of the Monchegorsk region (Kola Peninsula, Russia) is briefly described in the guidebook. The geological structure, ore localization and mineralogy of Cu-Ni-PGE and Cr occurrences in the major layered intrusions (Monchepluton, Imandra lopolith, Monchetundra intrusion) are presented in more detail.

Air, sea, surface water and soil support life, from which comes our food; the fossil remains of life, that is: coal, oil and gas, together with solar and terrestrial radiation provide energy; but almost all the artifacts of human civilization are made from substances taken from the earth's crust.

We are facing a global mineral resource crisis. In fact, we have two of them. First, Earth has a finite supply of minerals for a population that is growing faster than at any time in history
(Figure 1.1). Second, mineral consumption is growing even faster than the population. Until recently, we were deeply concerned that most minerals were used in more developed countries (MDCs) with smaller consumption in less developed countries (LDCs) (Table 1.1).