Minerals economic data

Revista de estadistica, monthly, 1938-. Supersedes Revista de economia y estadistica, 1933-36. Statistical review. Principal economic data on production (agricultural, mineral and metal, electrical energy, and industrial), prices and cost of living, foreign trade, finance, and transportation. In LC. 

Appendix G Economic Data for Metals, Industrial Minerals and Electricity... 

Applications of geological reference samples to mineral prospecting and economic evaluation of ore potential is the only application with a history dating back before the issuance of G-i and W-i in 1951. It is an area in which data quality or lack thereof has serious economic impacts, hence the very early development of certified reference materials mentioned previously. An extensive study of the state of ore analysis was undertaken by the Institute of Geological Sciences (now the British Geological Survey). Nineteen ores and concentrates, of varied matrix, were distributed to 38 laboratories more than 1532 results were received (Lister and Galagher 1970). 

New Zealand GIS data package and prospectivity modelling. Published jointly by Crown Minerals, Ministry of Economic Development and Institute of Geological Nuclear Sciences. 

Atacamate (Cu2(OH2)C1 Cu = 44.6%, SG — 3.8) is common to the Atacoma desert in Chile, for which this mineral was named. As an individual mineral, it does not have any significant economic value. No data on the floatability of this mineral are known. 

D GIS provides a particularly useful method to address the challenges of deep mineral exploration as it permits spatial data analysis in a rigorous fashion (de Kemp 2007). Based on examples from the Noranda camp, one of Canada s most mature and economically important mining camps, the present paper highlights innovative approaches that can be... 

The interpretation of lithogeochemical data from basaltic structural domes is complicated by lithological changes associated with the transition from basalt to overlying siliciclastic rocks, as well as by the polydeformed nature of the host sequence. Ferroan carbonate alteration is well developed, and low-level Au enrichment extends for a considerable distance away from zones of economic interest. Arsenic and Sb/AI anomalies are restricted to within approximately 10 m of mineralized zones. Sericite alteration is indicated by Na depletion and K enrichment in basalt within 20 to 40 m of mineralized zones. A number of other elements, including Mn, P, S, Zn, Mo, Cu, Se and Ba, are variably enriched within the rocks hosting Au mineralization, but it is not clear whether elevated concentrations of these elements are a product of syn-sedimentary exhalative activity or result from later hydrothermal alteration. 

Abstract strong commodity prices in the last few years have led to a remarkable renaissance of uranium exploration in Labrador, focused in a complex and geologically diverse region known as the Central Mineral Belt (CMB). Potentially economic epigenetic U deposits are mostly hosted by supracrustal rocks of Paleoproterozoic and Mesoproterozoic age, and are difficult to place in the traditional pantheon of uranium deposit types. Recent exploration work implies that structural controls are important in some examples, but the relationships between mineralization and deformation remain far from clear. Geochronological data imply at least three periods of uranium mineralization between 1900 and 1650 Ma. It seems likely that the Labrador CMB represents a region in which U (and other lithophile elements) were repeatedly and sequentially concentrated by hydrothermal processes. The current exploration boom lends impetus for systematic research studies that may ultimately lead to refined genetic models that may be applicable elsewhere. 

In defining the nutritional equivalence of dairy foods, FDA considered only 11 to 15 nutrients for milk substitutes, 1 nutrient for cream substitutes, and 4 to 9 nutrients for cheese substitutes (FDA 1978). Yet, data from the Consumer and Food Economics Institute, USDA (1976), reveal that traditional milk, cream, and cheese contain an array of nutrients including protein, fat, carbohydrate, and at least 15 minerals and vitamins and 18 amino acids. Thus, under FDA s proposal (FDA 1978), which has been withdrawn (FDA 1983) but, as mentioned above, may in effect be applied, a substitute dairy product could be declared nutritionally equivalent to its traditional counterpart and yet (1) not contain all of the nutrients in the traditional food, or (2) contain some or all of these other nutrients but in lesser quantities, or (3) contain some of the nutrients such as sodium in excessive amounts, or (4) contain more or less energy (NDC 1983C). 

We wish to express our gratitude to Dr. J. Shih for his assistance in the economic analyses and to Mr. L.A. Young for his process control and data analysis programming for these experiments. We also thank Occidental Minerals, Inc. for partial funding of this research. 

Sampling and analysis for thermally-released Hg in soils can be carried out easily and economically. The resulting data are effective in exploration for concealed mineral deposits. 

There are a number of disciplines in addition to geochemistry where judgment guided by experience is required to reach the desired objective. These include medicine, where a diagnosis of the cause of an illness may be based on a physician s subjective evaluation of symptoms as well as on the objective results of laboratory tests. Likewise, in economic geology, a decision of where to drill for mineral deposits depends on the skill of the exploration geologist as well as on data from cores and seismic lines, and on structural, sedimentologic or tectonic conceptual models. 

It should also be remembered that the total resource base of any fossil fuel (or, for that matter, of any mineral) will be dictated by economics (Nederlof, 1988). Therefore, when coal resource data are quoted some attention must be given to the cost of recovering those reserves. And, most important, the economics must also include a cost factor that reflects the willingness to secure total, or a specific degree of, energy independence, including some serious consideration of the very, real environmental aspects of coal usage. 

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