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
Results 1-5 of 75
Page 15
... orebodies. (b) Government action. Governments can act to stabilize or change prices. Stabilization may be attempted by building up a stockpile, although the mere building up of a substantial stockpile increases demand and may push up ...
... orebodies. (b) Government action. Governments can act to stabilize or change prices. Stabilization may be attempted by building up a stockpile, although the mere building up of a substantial stockpile increases demand and may push up ...
Page 20
... orebody (a) Ore grade. The concentration of a metal in an orebody is called its grade, usually expressed as a percentage ... orebodies, what the head grade will be. This is the grade of the ore as delivered to the mill (mineral dressing ...
... orebody (a) Ore grade. The concentration of a metal in an orebody is called its grade, usually expressed as a percentage ... orebodies, what the head grade will be. This is the grade of the ore as delivered to the mill (mineral dressing ...
Page 22
... 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. 2.8 Development of an ...
... 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. 2.8 Development of an ...
Page 23
... orebody size permits, rubbertyred equipment is used to produce larger tonnages more economically and shafts are then ... orebodies more etficiantly. Ore is mined by driving two haulage drifts at different levels and connecting them by ...
... orebody size permits, rubbertyred equipment is used to produce larger tonnages more economically and shafts are then ... orebodies more etficiantly. Ore is mined by driving two haulage drifts at different levels and connecting them by ...
Page 28
... 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 possible to its pre-mining form or provide some other ...
... 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 possible to its pre-mining form or provide some other ...
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