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| BULLETIN 527 ORE DEPOSITS OF THE HELENA MINING REGION MONTANA BY ADOLPH KNOPF WASHINGTON GOVERNMENT............................ Historical sketch of mining...................................................................................... Field work and acknowledgments............................................................ ............ Character and distribution of the rocks................................................................ Cambrian and Devonian systems................................ |
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| MINERAL AND ENERGY RESOURCE ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA Edited by...Ludington2 , and A.E. McCafferty1 Open-File Report 96-683-A This report is preliminary and has not been... or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government... MINERAL AND ENERGY RESOURCE ASSESSMENT OF THE HELENA NATIONAL FOREST, WEST-CENTRAL MONTANA U.S. GEOLOGICAL...GEOLOGICAL SURVEY OPEN-FILE REPORT 96-683-A * The Helena National Forest (the Forest) covers about 975,000 |
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| Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER UNITED STATES..._.....________-__-__-.___-_-----------_-__ Area and field work.__-.-.________-___-__-___.-_----_-----__-Arrangement...____________________________________ Topography and geology.-__-__-____--.-___-_-_-.----------__._ Ore...work..__.......__._____________.____ 8 History and production._________-;.-___-__---__-_-_-_-__---____...(Algonkian)._______________________________ Paleozoic and Mesozoic rocks--______.______-.__.._.____ Tertiary |
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| 1951 GEOLOGY AND GROUND-WATER RESOURCES OF THE HELENA VALLEY, MONTANA By Howard W. Lorenz and Frank A. Swenson........... Purpose and scope of investigation........................... Location and extent of .rea........................................ Agriculture and vegetation................................... History...irrigation.........................o.............. Mining....................................................... Faults and earthquakes................................... Geologic formations and their water-bearing |
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| WASHINGTON November 3, 2007 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...has been up to this summer. Bring your microscopes and something for the free table to share with others...what localities are actively producing material and are good bets for collecting trips. N No guest speaker...share, bring them along; we will have a projector and screen waiting. There should be ample time to enjoy...looking at each other’s special pieces, and swapping stories and information about collecting. I5 The |
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| Districts of the United States By A. H. KOSCHMANN and M. H. BERGENDAHL GEOLOGICAL SURVEY PROFESSIONAL...description of the geology, mining history, and production of the major gold-mining districts in 21 States...----------------Scope and objectives -------------------------1\uthorship and acknowledgments -------------Distribution...relations ---------------------------History of gold mining and trends in production_ J\labama -------------...--------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska |
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| STATES**-^ COMPILED BY FRANK C. SCHRADER, RALPH W. STONE AND SAMUEL SANFORD A revision of Bulletin 585 WASHINGTON.......................................... 102 District of Columbia ......................................... 139 144 146 153 158 163 169 . 172 174 Montana........................................................................................ Glossary and index.............................................. Compiled by FRANK C. SCHRADER, EALPH W. STONE, and SAMUEL SANFORD. INTRODUCTION. The volumes of the |
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| always run uniform, always be available promptly and be dependable in all other respects. To be sure that...is founded upon our ability to make good. Samples and Literature for the asking PENSHCOU TAR 8 TURPENTINE...owned, American citizens. controlled and managed by British and The Corporation owns over fifty patents...Canadian and Mexican patents which include th* BASIC PATENTS and principal improvements covering and controlling...wish to use its processes, and to give licensees all possible advice and technical assistance. The licensed |
 | Finch, John Wellington, Bateman, Alan M., Butler, B. S., Loughlin, G. F., McLaughlin, D. H., Singewald, J. T. Jr. - Eds. (1933) Ore Deposits of the Western States. The American Institute of Mining and Metallurgical Engineers, New York. | Book |
| Published by THE AilIERICAN I NSTITUTE OF :\IrnING AND METALLURGICAL ENGINEERS sponsored by the ROCKY...professwnal peers, as an express-ion of their appreciation and admfration FOREWORD O honor the name of Waldemar...altogether a natural and fitting tribute. For 46 years Geologist Lindgren has contributed, and contributed largely...Llrnt his pains taking methods of thorough field and laboratory study were made an essential part of the...world's store of knowledge and of metals. Later, as a teacher in a great scientific and technical institute |
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| new information that has accumulated is so large and so different in character that a companion volume...volume became a necessiry. Not only have obscure and forgotten gemstone deposits been profitably reopened...the continent. Beautiful specimens of record size and quality have been found, as well as entirely new...yielded surprising data on the origin, structure. and properties of gemstone class~s, which is particularly...class of stone-precious, industrial, rare, massive, and organic-is covered separately, with deposits described |
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| "^'^^S'''^^^''^ 107 V, '^'^M^i^ JULY TO DECEMBER 1913 Mining and 429 MARKET STREET Scientific Press SAN FRANCISCO...company report Abosso mine. West Africa Acacia Mining Co., Colorado 270, Editorial. Accident prevention... . . Queen Co.'s mine, Arizona Accident Gold Mining Co., Subil mine, French Gulch, Rules, Copper California... 301, ing plants— I, II, III, IV Administration and Mexico 595 892 830 955 634 472 864 226 755 876 750...apreciatlon. On fissure veins i Ahmeek Copper Mining . . . Co., . .F. . . 620 386 366 1 978 |
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| GENESIS AND NATURAL CLASSIFICATION BY DR. PAUL NIGGLI !'ROl'&S50R TRANSLATED OP' MINERALOGY AND PETROLOCY...MASSACHUSBTTS AND SUPPLEMENTED CANADA JNSTlTUTE THROUGHOUT OP TECHNOI.OGV BY DR. NIGGLI AND DR. R. L...a I I I PRISTED IS GREAT BRITAIN BY BILLING AND SONS LTD., Gl:JLDFORD ASD ESHER ., 'I I PREFACE...reached similar conclusions, and I am indebted to him for certain suggestions and additions. The lectures...translation was first suggested by Dr. H. C. Boydell, and Dr. Robert L. Parker, Lecturer in Mineralogy at Zurich |
