| | 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 | | | 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 |
|