New method of sampling by section types
Abstract
The proposed sampling method is based on a regular relationship between the structure of ore deposits in terms of thickness and the content of valuable mineral. The main object of the study was a deposit where the largest ore deposits are genetically and spatially associated with a primarily well‑stratified rock complex. The main reason for the formation of the stratified complex of rocks and ore deposits is crystallization differentiation, which apparently consisted in the following: a) movement of crystallizing magmatic melt; b) gravity; c) large accumulation of elements forming volatile compounds; d) increasing viscosity of the crystallizing melt; e) non‑uniform (consecutive from top to bottom) cooling of the intrusive body; f) two periods of melt crystallization: first – slow crystallization of mainly leucocratic minerals, second – faster crystallization of all other minerals of magmatic origin.
None
References
- Ivanov N.V. New mineralogical method of sampling. Zapiski Vsesoyuznogo mineralogicheskogo obshchestva, 1957, part 86, No. 1. (in Russian)
- Ivanov N.V. Some data clarifying the coefficient of variation. Zapiski Gornogo Instituta, 1951, vol. 25, iss. 2. (in Russian)
- Ivanov N.V. Methods of sampling of Karabash deposits by ore types. Sovetskaya geologiya, 1941, No. 4. (in Russian)
- Ivanov N.V. New methodology of sampling by ore types. Razvedka nedr, 1946, No. 6. (in Russian)