Phosphate minerals in northwestern Utah have been known since 1905. In 1909, Frank Edison and Edward Bird located claims on Utahlite Hill and produced variscite until 1910. Now the location is known as the Utahlite claim. This locality is important as a source of lapidary-grade variscite and well-formed microcrystals of metavariscite and variscite. The number of mineral species occurring at this location is limited, but interesting. Currently, one small oval open pit has been developed for mining lapidary material. North of this pit is a small variscite prospect, the Alice claim.

Over the last 30 years, Dr. Nikita V. Chukanov has collected IR spectra of about 2000 mineral species, including 247 holotype samples. In this book, he presents 3309 spectra of these minerals with detailed description and analytical data for reference samples. In the course of this work, about 150 new mineral species have been discovered. After an introductory chapter, infrared spectra of minerals are given together with the descriptions of standard samples used (occurrence, appearance, associated minerals, empirical formula etc.) and some comments. Sections are organized according to different classes of compounds (silicates, phosphates, arsenates, oxides etc.).

"How to find and identify gem minerals. Including a complete directory of the best hunting locations with 89 detail maps and 8 pages of color photographs"--Jacket.

Box Elder County displays a variety of lithologic types in each of the major rock divisions: sedimentary, igneous, and metamorphic, in a typical Basin and Range setting. True to the basic structure most of its mountain ranges generally trend north-south, but the Raft River Range trends east-west. Each mountain range exhibits a variety of structural situations: most stratigraphic units are folded and faulted, and many are intruded by igneous rocks. 251 pages + 3 plates