A Field Guide to Rocks and Minerals

Fülszöveg

A F1ELD GUIDE TO ROCKS AND MINERALS FOURTH EDITION FREDERICK H. POUGH Here is an authoritative guide that presents the beginner with both the i-nf ormát ion and the stimulus to start a good basic coliection, and the experienced coliector with an índispensable pocket reference. Its descríptions cover all rocks that can be identified in their rough state and all of the common minerals. in this revised editíon 268 photographs are now conveníently grouped at the center, 156 of them in color and 143 entirely new. The locaiities of occurrence have been updated and expanded in the text, and an additionai number of the rare and intriguing minerals are discussed and illustrated, The first section of the book contains a summary of the various kinds of rocks, foilowed by brief chapters about the physical and chemica! properties of minerals, crystaliography, and certain home-laboratory" techniques of Identification. In the second section 270 minerals are grouped according to chemical... Tovább

Fülszöveg

A F1ELD GUIDE TO ROCKS AND MINERALS FOURTH EDITION FREDERICK H. POUGH Here is an authoritative guide that presents the beginner with both the i-nf ormát ion and the stimulus to start a good basic coliection, and the experienced coliector with an índispensable pocket reference. Its descríptions cover all rocks that can be identified in their rough state and all of the common minerals. in this revised editíon 268 photographs are now conveníently grouped at the center, 156 of them in color and 143 entirely new. The locaiities of occurrence have been updated and expanded in the text, and an additionai number of the rare and intriguing minerals are discussed and illustrated, The first section of the book contains a summary of the various kinds of rocks, foilowed by brief chapters about the physical and chemica! properties of minerals, crystaliography, and certain home-laboratory" techniques of Identification. In the second section 270 minerals are grouped according to chemical composítion and treated individuaily. Emphasis is piaced on recognition by geographical area and geoíogical environment, important physicai attributes and crystal forms, and by other distinguishing characteristics revealed through a few relatívely simple tests. With these methods the process of identification is quickly narrowed to a handful of similar species, spartng the coliector the effort of separating the specimen in hand from hundreds of others. For the reader's convenience there is a metric conversíon rule prínted on the inside of the back cover. Vissza