| | Report (issue) | » F/i. 4/ CRYSTALS NOT PISTOLS v the cover—Turquois crystals from Lynch Station, Virginia; x ca.; phoÂ...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound | | | Journal (issue) | the Virginia Polytechnic Institute, Engineering Experiment Station Series, dealing with Virginia Mineral...Mineral Localities: Virginia Mineral Localities (1960 Edition) Virginia Mineral Localities (Supplement...(Supplement I) Virginia Mineral Localities (Supplement II) Virginia Minerals and Rocks (3rd Edition) Ex LIBRIS...LIBRIS ROCK H. CURRIER BOOK No. _'fl_9_ On the Co•er-Arboreacent cr7atal irroupa of cnlclto from ,avltlu... I !V I ii VIRGINIA POLYTECHNIC INSTITUTE Engineering Experiment Station Series No. 151 Ii !I ·1 | | | Journal (article/letter/editorial) | study of chalcosiderite and turquois. Geol,.Ser., No' 52' 39-53. Iro,T.aNnH.Motr(1951)Thecrystalstructureof]udlamite...pseudohexagonal(orthorhombic) minerals are nin- The Virginia material is soft, earthy, dull, and yellowish...similar to ningyoite and grayite was considered, but no diffraction lines suggesting this lower symmetry...The Fe is mainly from goethite and perhaps clay. No doubt the rare earths, Th, and P, as well as many...Tenr,e 1. X-nav Pomrn Dlre Salisbury, Conn.1 Virginia I (obs.) I (obs.) 10.0 10.1 11.0 11.1 20.0 | | | Report (issue) | marketing----___--______-_-_-_--_---_ 1 2 2 3 4 4 4 6 6 7 8 11 12 12 15 16 16 17 17 22 24 26 Sheet...ILLUSTRATIONS Page PLATE 1. 2. 3. 4. 5. 6. 7. 8. 9. FIGUKE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14...20 23 24 24 26 29 32 III IV TABLES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Theoretical composition...data for mica specimens, arranged by lot and by mine or prospect-_-___--_-___-_-.___---___-_____--_ Results..._______________ 13. Test data for mica (not identified by mine), taken from the production line of the Colonial |
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