Kyanite In Kenya
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The Rift Valleys and Geology of East Africa
Author | : John Walter Gregory |
Publisher | : |
Total Pages | : 1018 |
Release | : 1921 |
Genre | : Geology |
ISBN | : |
Mineral Trade Notes
Author | : |
Publisher | : |
Total Pages | : 626 |
Release | : 1946 |
Genre | : Mineral industries |
ISBN | : |
A monthly inventory of information from U.S. Government Foreign Service offices and other sources that may not otherwise be made available promptly.
Mineral Trade Notes
Author | : United States. Bureau of Mines |
Publisher | : |
Total Pages | : 802 |
Release | : 1955 |
Genre | : Mineral industries |
ISBN | : |
Mineral Facts and Problems
Author | : United States. Bureau of Mines |
Publisher | : |
Total Pages | : 1124 |
Release | : 1965 |
Genre | : Mineral industries |
ISBN | : |
Minerals & Gemstones of East Africa
Author | : Bruce Cairncross |
Publisher | : Penguin Random House South Africa |
Total Pages | : 372 |
Release | : 2019-10-01 |
Genre | : Nature |
ISBN | : 1775846989 |
East Africa is famous for its world-class gemstones and mineral specimens, most notably the highly sought-after blue tanzanite, found only in Tanzania in a very small area in the northeast. Many other minerals and gemstones are mined in the region and this is the first publication to showcase and examine those occurring in the five countries that make up East Africa – Kenya, Tanzania, Rwanda, Uganda and Burundi. The book includes: An introduction to the fascinating geology of the region, including a map depicting underlying geology and mineral occurrence; detailed descriptions of minerals, including their gemological properties, history, occurrence and diverse uses across all spheres of life (from jewellery to numerous household items and even space-shuttle components); multiple full-colour photographs of each mineral and gem specimen. An invaluable reference for collectors, gemologists, students and anyone with an interest in the earth sciences. Sales points: A first, fascinating record of East African minerals and gemstones; numerous beautiful photographs of each mineral in full colour; concise, authoritative and accessible text.
Minerals Yearbook
Author | : United States. Bureau of Mines |
Publisher | : |
Total Pages | : 1060 |
Release | : 1998 |
Genre | : Mineral industries |
ISBN | : |
Rock-Forming Minerals: Orthosilicates, Volume 1A
Author | : William Alexander Deer |
Publisher | : Geological Society of London |
Total Pages | : 940 |
Release | : 1982-12-01 |
Genre | : Science |
ISBN | : 9781897799888 |
A second edition, in two parts, of Volume 1 of this well-known reference series. This volume deals mainly with the olivine and garnet groups and also the humite group, zircon, sphene, vesuvianite, the Al2SiO5 (including mullite), topaz, staurolite and chloritoid. The disilicates and ring-silicates are covered in Volume 1B. In the years since the first edition was published, the quantity and scope of research on the olivines, garnets and the aluminosilicates has grown enormously and has given rise to a wide variety of literature. This book, which has been completely rewritten and considerably expanded, summarizes the important research results and presents them in an organized fashion. Each mineral chapter is divided into sections on structure, chemistry, optical and physical properties, distinguishing features and paragenesis. Each chapter is headed by a tabulation of mineral data and a sketch showing optical orientation, and concludes with full references to the literature. Diagrams of the crystal structures are presented and are followed by a discussion of the structural features. The chemical sections include a large number of analyses from which structural formulae have been calculated, illustrating the chemical and paragenetical variation exhibited by each mineral; phase equilibria in relevant systems are fully considered. In the sections on optical and physical properties, particular attention is paid to the correlation of these properties with chemical composition. The principal modes of occurrence are described and discussed in the paragenesis sections; here again correlation with chemistry is emphasized. 11 volumes are available in this series.