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Term for the structure of a rock which has been broken up severely by strong dynamic metamorphism or faulting. Common features are bent, broken or ground-up minerals.
Minerals may be identified by different physical and chemical properties. It is important to understand that a minerals is usually identified by a variety of properties. No single property is diagnostic for all minerals. Common diagnostic properties include: •Color •Streak •Luster •Hardness
Minerals: Their Constitution and Origin is an introduc-tion to mineralogy for undergraduate and graduate students in the fields of geology, materials science, and environmental science. It has been designed as a textbook for use on a semester course and covers all aspects of mineralogy in a thoroughly modern and integrated way.
The Glossary of Geology (Bates and Jackson, 1980, p. 401) defines a mineral as "a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties." Minerals differ from rocks, which are naturally occurring solids composed of one or more minerals.
Minerals are defined as: naturally-occurring, inorganic, solid materials, with a crystalline structure, and a well-defined chemical composition that can be written as a chemical formula. Geologists give proper names to different minerals.
This Mineral Names Dictionary contains mineral names that the average mineral collector will encounter while collecting minerals, attending shows and visiting museum displays. In addition to the most common min‐ eral names, there are some unofficial names which you will still find on labels.
Rocks are naturally occurring aggregates of one or more minerals. In the case of porosity or fracturing, they also contain fluid phases. With respect to their geological genesis and processes, rocks are divided into three major groups: igneous rocks (magmatites); metamorphic rocks (metamorphites); sedimentary rocks (sediments).
