What is acid rock drainage?

Slides:

Advertisements

Similar presentations

12-1 Environmental Geology James Reichard Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Advertisements

Acid Mine Drainage. Terms Acid Mine Drainage (AMD) –Water that is polluted from contact with mining activity Acid Rock Drainage (ARD) –Natural rock drainage.

Fossil Fuels Environmental Implications. Fossil Fuels and the Environment  Environmental Consequences of  Extraction: drilling, mining  Transportation:

Acid Mine Drainage: From Formation to Remediation CE Aquatic Chemistry Julie Giardina Dominike Merle.

EARTH SCIENCE Verneil Bungco I-Amethyst Nina Batara Marielle Encabo Ms. Charity Mulig Proposed to: Mr. Businessman.

Environmental Science Chapter 16 Review

An Introduction to Acid Mine Drainage by George Mitchell and Tim Craddock.

PYRITE Earth Science 11 Rocks and Minerals Eva Xie 11A.

By AJ& Courtney. We chose pyrite  We got pyrite.  Pyrite is a mineral.  Its nickname is fools gold.

Chemical Weathering What is it? How does it happen? What do the effects look like? What is it? How does it happen? What do the effects look like?

Geology, Mining, and Water Quality by Matthew A. Sares.

Types of Chemical Weathering. Carbonation Carbonation- the reaction between calcite and weak acids in rain water and acids in groundwater. Rocks that.

Lecture 9 SULFUR GES175, Science of Soils. Relevance of Soil Sulfur * Used in amino acids, vitamins * Plant Deficiency   small and spindly plants.

Weathering A process that breaks down rocks into smaller fragments.

 The primary acid-generating process at these sites is the dissolution of pyrite: 2FeS 2 + 7O 2 + 2H 2 O > 2Fe S O 4 + 2H 2 SO 4  Iron and/or sulfur.

Refers to the leaching of acidic waters from previously mined metal or coal sources. Sulfuric acid (acid rock drainage) comes from natural oxidation of.

Acid Mine Drainage. Yellow boy in a stream receiving acid drainage from surface coal mining. An Enviromental problem in coal- Mining region Degrades water.

To Be or Not To Be a Mineral? Copy the list below on a sheet of paper and write either Yes or No next to each substance below you think is or is not a.

Chapter 8 Supplemental Information. Humus Plants drop leaves, twigs, and other material to the ground Over time, this leaf litter decomposes into dark,

Acid Mine Drainage Ran Liu. srmwww.gov.bc.ca/clrg/britannia/background.html What’s Acid Mine Drainage? Acid mine drainage (AMD) is polluted water discharged.

Useful metals come from rocks and minerals in the Earth’s crust. Metals-1-1 Image: G. Plumlee, USGS.

Protecting against acid rock drainage is important at mines where sulfide minerals are present. Image: G. Plumlee, USGS Metals-4-1.

Mining Rocks and The Undesirable Effects of Obtaining Mineral Resources.

What is acid rock drainage? Metals-7-1 Image: G. Plumlee, USGS.

Test May 4 Defining mineral characteristics Identify minerals Match mineral group to property Match mineral to group Rank hardness Multiple choice Open.

Types of Minerals Chapter 4.2.

Earth Science With Mr. Thomas Minerals All rocks & minerals on earth are made of elements. How is a rock different than an mineral? Rocks are made of.

Have you seen… Potholes in roadways? Broken concrete in sidewalks and curbs? These are examples of Weathering.

Weathering and Soil Formation

A PowerPoint Presentation By Benjamin Garza ACID MINE DRAINAGE (AMD)

Chapter 8 Percentage Composition. Water is made of hydrogen and oxygen. How many grams of each are in the sample of water below?

Minerals to Know.

Reduction Oxidation and Potentials. Definitions Reduction – The process of an atom or ion becoming more negatively charged –They gain electrons (which.

Section 1: Weathering Processes

Minerals Day 3 Student Notes Quiz Monday!. MINERALS Elements are the basic building blocks of minerals! But what is a mineral? ◦ Naturally Occurring ◦

Minerals Chapter 2.2. Definition of a Mineral 1. Naturally occurring 2. Solid substance 3. Orderly crystalline structure 4. Definite chemical composition.

MINING. Mineral Resource: Naturally occurring material in or on Earth’s crust that can be extracted and processed into useful materials for a profit.

Intro to Minerals. What is a rock? A consolidated mixture of minerals.

BY..ARMANDO Y HUNTER. Weathering  Mechanical weathering-is simply the breakdown of rock into smaller pieces by physical means.  Chemical weathering-chemical.

Acid Mine Drainage (AMD) By Alyssa Ruggiero. What is AMD? AMD is…  The orange/yellow discoloration- also known as Yellow Boy- in streams caused by the.

Weathering The breakdown of rocks into small particles at the Earth’s surface.

Extracting metals.

Pyrite By Cara Chae-Banks And Ian Gevanthor. Distiguishing Characteristics Color: Yellowish gray (often mistaken for gold) Class: Sulfides Luster: Metallic.

Biogeochemical cycles

Metals Ores, Alloys, Corrosion and Smelting

Useful metals come from rocks and minerals in the Earth’s crust.

Protecting against acid rock drainage is important at mines where sulfide minerals are present. Image: G. Plumlee, USGS Metals-4-1.

Acid Mine Drainage (AMD)

Environmental Issues in Canada

What is acid rock drainage?

Weathering and Soil Chapter 7.

1.2 Understanding How Weathering Wears down the Land

What is the Earth’s Crust made of?

How metals are recovered from rock

Weathering, Erosion, and Deposition

What is acid rock drainage?

Environmental Issues in Canada Canadian Shield & Timber Industry

2.2 Minerals Textbook, pp

What are the environmental implications?

Rusting What is rust? Can you give examples of things that rust?

Percentage Composition Chapter 8 Percentage Composition.

GES175, Science of Soils Lecture 9 SULFUR.

Protecting against acid rock drainage is important at mines where sulfide minerals are present. Image: G. Plumlee, USGS Metals-4-1.

Advanced Placement Environmental Science

Minerals Chapter 4.

Mining – Environmental Impacts

How metals are recovered from rock

Presentation transcript:

What is acid rock drainage? Image: G. Plumlee, USGS Metals-7-1

Rocks that contain useful metals commonly contain sulfide minerals - minerals that combine metal with sulfur. Image: Travis Hudson Sulfide minerals in a rock sample Metals-7-2

The most common sulfide mineral is pyrite - or “Fool’s Gold” - a combination of iron and sulfur. Image: R. Busch Metals-7-3

Pyrite occurs widely in rocks including disseminations through this entire mountain. Image: G. Plumlee, USGS Metals-7-4

When pyrite comes in contact with oxygen in air or water it “oxidizes” or turns into rusty iron oxides and sulfuric acid. Certain bacteria make this process go faster. Oxygen Sulfuric Acid Pyrite Bacteria Images: USGS, DeAtley Design Metals-7-5

The sulfuric acid produced by oxidation of pyrite makes nearby soil and water acidic - this is acid rock drainage. Acid rock drainage can harm habitat. Image: Travis Hudson Metals-7-6

Acid rock drainage occurs naturally and is an environmental concern where sulfide minerals are mined. There are several ways to control or prevent acid rock drainage at mines. Image: Travis Hudson Metals-7-7