NASC 130 Essentials3_ch12

Depends upon consumption rates and reserve amounts

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Unformatted text preview: and conservation Substitution Recycling Doing without Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Environmental Issues Extraction and processing has large impacts Air Surface water Ground water Soils Biota Aesthetics Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Environmental Issues Acid mine drainage (AMD) Sulfides exposed to O2 create sulfuric acid Water from spoil piles is acidified (pH < 5.7) AMD creates toxic conditions Mobilizes heavy metals Mobilizes Kills stream organisms Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources Environmental Issues Spoil – material removed to expose ore Tailings – mineral processing wastes Both have large adverse environmental impacts Acid leachates contaminate ground and surface water Acid Aesthetic disruption Respirable dusts Essentials of Geology, 3rd edition, by Stephen Marshak Chapter 12: Riches in Rock: Energy & Mineral Resources W. W. Norton & Company W. Independent and Employee-Owned This concludes the Norton Media Library This PowerPoint Slide Set for Chapter 12 PowerPoint Essentials of Geology Essentials 3rd Edition (2009) by Stephen Marshak by...
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This document was uploaded on 11/25/2013.

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