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W-Sn skarn deposits and related metamorphic skarns and granitoids
Distributors for the United States and Canada, Elsevier Science Pub. Co.
1 online resource (xvi, 451 pages) : illustrations
Intended as a reference for the academically-oriented geologist as well as the practising economic geologist, this book is concerned with the study of skarn deposits having anomalously high tin or tungsten contents, or both. Unlike many other books on economic geology, both economic W-Sn skarns and non-economic examples are covered, in order to enable the academically-oriented reader to grasp the full range of such deposits, and also to aid the economic geologist in distinguishing between W-Sn skarns having economic potential and those which do not. W-Sn skarns are notoriously complex,
Front Cover; W-Sn Skarn Deposits and Related Metamorphic Skarns and Granitoids; Copyright Page; Dedication; Table of Contents; Preface; Acknowledgements; Chapter 1. Introduction and General Features of W-Sn Skarns; 1. What is a skarn?; 2. The Economic Importance of W-Sn skarns; 3. Where do W-Sn skarns form?; 4. When do W-Sn skarns form?; 5. How do W-Sn skarns form? -- an overview; Chapter 2. The Meanings and Features of W-Sn skarns; 1. Introduction; 2. Metamorphic versus Ore (or Metasomatic)skarn; 3. Previous classifications of W-Sn skarns; 4. General features of W-Sn skarns.
Classification used here. Chapter 3. Metamorphic Skarns in W-Sn Ore skarn Environments; 1. Introduction; 2. Metamorphic Skarn Mineralogy; 3. Some Physio-chemical Restraints on Metamorphic Skarns; 4. Types of metamorphic skarns; 5. Endoskarns; 6. The cause of metamorphic skarn zonation; 7. The conditions of metamorphic skarn zonation; Chapter 4. Some General Features of W-Sn Skarns; 1. Introduction; 2. The sources, possible compositions and modification of skarn-generating solutions; 3. Some characteristics of solutions exsolved from crystallizing (granitoid) magmas.
4. The chemical effect on ore solutions of reaction with carbonate5. The chemical effect on ore solutions of reaction with rocks other than carbonate; 6. Permeability and porosity of ore skarns; 7. Is ore skarn genesis a constant volume process?; 8. Depth and skarn genesis; 9. Zoning of Assemblages in W-Sn Skarns; Chapter 5. The Geochemistry and Mineralogy of W and Sn in skarns; 1. Introduction; 2. Tungsten minerals in skarns; 3. Tin minerals in skarn; 4. The solution geochemistry of tungsten; 5. The solution geochemistry of tin.
6. An overview of fluid inclusions in W-Sn skarns and their thermal evolution7. An overview of stable light isotopes in W-Sn skarns; 8. The determination of conditions of ore skarn genesis; Chapter 6. W-Sn related Granitoids and their Alteration; 1. Introduction; 2. General Characteristics of Granitoids associated with W-Sn skarns; 3. W-Skarn granitoids; 4. Sn-skarn granitoids; 5. Distribution of granitoids associated with W-Sn skarns; 6. The hydrothermal alteration of granitoids associated with W-Sn skarns; Chapter 7. Proximal W-skarns; 1. Introduction.
2. Magnetite + Andradite (oxidized) W-skarns3. Andradite (oxidized) W-skarns; 4. Grossularite -- Andradite and Grossularite -- Almandine (Reduced) W-Skarns; 5. Examples where tungsten is a minor proportion of the ore; Chapter 8. Proximal Tin Skarns; 1. Introduction; 2. Total versus acid soluble tin in skarns; 3. Magnetite-tin skarns; 4. Andradite + WoUastonite Sn-Skarns; 5. Magnetite + Fluoride + Vesuvianite Skarns; 6. Forsterite + Pyroxene ±Spinel Skarns; Chapter 9. Greisenized, Greisen, and Distal Sn-Skarns; 1. Introduction; 2. Greisenized and Greisen skarns; 3. Greisenized skams.
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Includes bibliographical references (pages 401-439).
Amsterdam ; New York : Elsevier : Distributors for the United States and Canada, Elsevier Science Pub. Co., 1987