An Introduction to Economic Geology and Its Environmental ImpactAs it has grown in length and level through successive edtions, the same author's Introduction to Ore Geology (now Ore Geology and Industrial Minerals) has left behind its original audience: first- and second -ear students. This new textbook, designed to fill that niche , was written specifically for introductory courses. Introduction to Economic Geology and Its Environmental Impact covers oil, coal, water and nuclear fuels, as well as economically important ores and bulk minerals. In keeping with current concerns and constraints, particular attention is paid to the impact of mining and drilling on the environment |
From inside the book
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Page 15
... due to abnormal circumstances such as natural disasters, war, other political events, fire, strikes at the mines of big suppliers; (2) improved technique in exploitation; (3) discovery and exploitation of large new orebodies.
... due to abnormal circumstances such as natural disasters, war, other political events, fire, strikes at the mines of big suppliers; (2) improved technique in exploitation; (3) discovery and exploitation of large new orebodies.
Page 20
2.3.2 Some important factors in the evaluation of a potential orebody (a) Ore grade. The concentration of a metal in an orebody is called its grade, usually expressed as a percentage or in parts per million (ppm).
2.3.2 Some important factors in the evaluation of a potential orebody (a) Ore grade. The concentration of a metal in an orebody is called its grade, usually expressed as a percentage or in parts per million (ppm).
Page 22
... mining of low grade orebodies. As can be seen from Fig. 2.8, a time comes during exploitation when the waste-to-ore ratio becomes too high for profitable working; for low grade ores this is around 2:1 and the mine must be abanFig.
... mining of low grade orebodies. As can be seen from Fig. 2.8, a time comes during exploitation when the waste-to-ore ratio becomes too high for profitable working; for low grade ores this is around 2:1 and the mine must be abanFig.
Page 23
Haulage always used to be by narrow gauge, electrically operated railways but now, if the orebody size permits, rubbertyred equipment is used to produce larger tonnages more economically and shafts are then gentle spiral declines up ...
Haulage always used to be by narrow gauge, electrically operated railways but now, if the orebody size permits, rubbertyred equipment is used to produce larger tonnages more economically and shafts are then gentle spiral declines up ...
Page 28
But here we must return to Stevenson's predicament-orebodies are finite and non~renewable and if exploited cannot be replaced. The best the miner can do is to show environmental responsibility and return the mined area as nearly as ...
But here we must return to Stevenson's predicament-orebodies are finite and non~renewable and if exploited cannot be replaced. The best the miner can do is to show environmental responsibility and return the mined area as nearly as ...
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Contents
| 1 | |
Part 2 Examples of the More Important Types of Ore Deposit | 83 |
Part 3 Mineralization in Time and Space | 319 |
Index | 353 |
Other editions - View all
An Introduction to Economic Geology and Its Environmental Impact Anthony M. Evans No preview available - 2009 |
An Introduction to Economic Geology and Its Environmental Impact Anthony M. Evans No preview available - 1997 |
Common terms and phrases
acid aquifers Archaean areas associated Australia banded iron formation baryte basins beds Bushveld Complex carbonate carbonatite chalcopyrite chemical chromite clay coal Complex concentration contain continental country rocks crust crystals deposit type deposits occur dolomite economic environment evaporites example exploitation facies faults fields first fluid fracturing Geology geothermal gold grade grains granites ground water heavy minerals host rocks hydrothermal igneous important industrial minerals intrusions iron formation isotopic kimberlite komatiitic lamproites layers lead limestone magma magnetite manganese massive sulphide deposits material metamorphic mining molybdenum nickel oceanic orebodies oxide pegmatites peridotite Phanerozoic phosphate plutonic porphyry copper deposits Precambrian precipitation present processes production Proterozoic pyrite quartz region reserves sand sandstone Section sedimentary sediments shale significant silicate skarn stockwork stratiform sulphide sulphur surface temperature thick tion tonnage ultrabasic uranium usually veins volcanic wall rock alteration water table zone
Bibliographic information
| Title | An Introduction to Economic Geology and Its Environmental Impact |
| Author | Anthony M. Evans |
| Publisher | John Wiley & Sons, 2009 |
| ISBN | 1444313525, 9781444313529 |
| Length | 384 pages |
| Subjects | › › Science / Earth Sciences / General |
| Export Citation | BiBTeX EndNote RefMan |