Chapter 12, Problem 71AP

(a)

Interpretation Introduction

Interpretation: The minerals contain indium, the mining site and the process used to get pure indium should be explained.

Concept Introduction:

Indium is silver grey in color. It is a highly luster metal with low melting point. It is almost never exist in Earth’s crust in pure form. It is exist as stray ions trapped in the base metal minerals crystals. It is essential in liquid crystal display. Its low melting point and high conductivity makes it important in electrical components and formation of alloys.

(b)

Interpretation Introduction

Interpretation: The environmental problems from mining indium should be explained.

Concept Introduction: Mining can have many environmental effects such as soil erosion, sinkholes, soil and surface/ground water pollution. The chemical released during the mining process also affects health of local population.