The objective of this research is to determine all processes in the magmatic evolution and related hydrothermal activities that created the volcanic rocks and associated ore-forming systems of the Bafq ‎mining district. Several iron oxide-apatite (IOA) deposits were investigated in this area with a focus on the Sechahun ore deposit. The Bafq ‎mining district is well known for hosting significan...

This study describes a method used to improve ore grade estimation in a limestone deposit in India. Ore grade estimation for the limestone deposit was complicated by the complex lithological structure of the deposit. The erratic nature of the deposit and the unavailability of adequate samples for each of the lithogical units made standard geostatistical methods of capturing the spatial variatio...

This paper presents the mineralogy and chemical composition including iron ore impurities to ascertain its suitability for industrial applications. The Asanje deposit is hosted in Precambrian volcano-sedimentary rocks Mayamaya-Hombolo Belt Dodoma region, within Lake Nyanza Superterrane. Iron ores are found two parallel ridges trending NW-SE. Ridge I occurs as vein banded hematite-type II massiv...

Cultured bovine aortic endothelial cells were examined for renin activity by biochemical, immunological, and immunohistochemical techniques. When cell sonicates were incubated with renin substrate, linear generation of angiotensin I was observed (1.12 ± 0.2 ng angiotensin I/10 cells per hr). The effect of pH on this activity was similar to that of bovine renal renin, and renin antibodies inhibi...

The colour plate which appears in this number of the Canadian Mineralogist iliustrates the advantage of microscopic observation of mineralized rocks in polished thin-section by incident and transmitted cross-polarized light simultaneously: the identities and relationships of opuqrr" and translucent minerals in contact are immediately evident. The principle is not ne.w; more than a hundred years...

Two types of refractory bricks were used in reaction tests with slag from a production kiln for iron ore pellet production. Electron microscopy was used to characterize morphological changes at the slag/brick interface and active chemical reactions. Phases such as kalsilite, nepheline and potassium β-alumina form, in a layered structure, as a consequence of alkali metals migration in the brick....

different samples have been prepared from different products in chadormalu iron ore concentrator plant: low intensity magnetite separators concentrate (magnetite concentrate), reverse flotation tail (final hematite concentrate), flotation concentrate (apatite concentrate), final tail (l.i.m.s. tail + reverse flotation concentrate+ apatite flotation tail). the samples were used for rare earth el...

Natural or artificial light allows us to see and analyze matter with our eyes, which are the first tools used in several experiments. In geosciences, particularly mineralogy, is for optical microscopy observations. Reflected transmitted applied study of ore deposits can be useful discriminate between gangue from precious phases. Knowledge structural morphological characteristics, combined quant...

Estimation of ore reserves is one of the most critical aspects of mining geology. The accurate assessment of the tonnage and grade of run of mine may be the difference between a healthy profitable operation and an expensive early mine closure. The first step in ore reserve estimation is to determine the boundary of ore body or ore/waste contacts. This paper presents a specific mining applicatio...