Sulfides

Sulfides are a group of minerals that contain sulfur combined with one or more metals. They are typically found in ore deposits and can have economic significance due to the metals they contain.

Chemical Composition

Sulfides are characterized by the chemical formula M_xS, where M represents a metal and x represents the ratio of metal to sulfur atoms. Some common sulfide minerals include pyrite (FeS₂), galena (PbS), and chalcopyrite (CuFeS₂).

Physical Properties

Sulfide minerals can exhibit a range of physical properties. They may be metallic or non-metallic in luster, and can have varying hardness and color. Many sulfides have a distinct metallic luster and are opaque.

Occurrence and Uses

Sulfide minerals are commonly found in hydrothermal veins, sedimentary rocks, and igneous rocks. They are important as sources of metals such as lead, zinc, copper, and iron. These metals are widely used in various industrial applications, including construction, electronics, and transportation.

Study Guide

1. What is the chemical formula for pyrite?
2. Where are sulfide minerals commonly found?
3. What are some of the economic uses of sulfide minerals?
4. Describe the physical properties of sulfide minerals.