 | | Report (volume) | | ILLUSTRATIONS. Page. PLATE I. Topographic map of tin region, showing location of metalliferous prospects ___...Cassiterite lode; B, Surface exposure showing occurrence of fluorite silicate rock adjoining veinlets...tin in the York region by the Geological Survey in 1900 the tin deposits of this district have been discussed...that were incidental to other work, and as this district had attracted much notice as a possible source...time permitted, to determine the laws of their occurrence and origin. It was thought best to emphasize |  | | Report (volume) | | ............................... Seven Troughs district.................................................Outlook for the district................................................. Rosebud district................................................... Red Butte district........................................................................ Chafey and the Sierra district.......................................... Kennedy............................................ 64 Axinite............................................... |  | | Book | | the earlier history, indeed the prehistory, of a region. Conglomerates speak of a time when high nearby...direction, parallel to the length. Luster: LIMONITE Streak: brown to yellow. Fracture: granular....Cleavage: prismatic. Figure 7 Graphite Figure 8 Limonite COLOR KEY TO MINERALS 15 Fracture: WOLFRAMITE...direction, parallel to the length. Fracture: uneven. LIMONITE Luster: glassy to dull, submetallic to dull...parting. Violet—Brown Fracture: shell, uneven. AXINITE Luster: glassy. Hardness: 6.5-—7. Streak: uncolored |  | | Report (volume) | | ___________ -- _________________________ -___ General occurrence of tin-tungsten minerals in the Lost River area___...Lost River area is but a small part of a larger region in the Seward Peninsula that contains lode and...channels for mineralizing solutions. GENERAL OCCURRENCE OF TIN-TUNGSTEN MINERALS IN TliE LOST RIVER AREA...mixtures of the following minerals: fluorite, axinite, tourmaline, calcite, idocrase, diopside, and phlogopite...products in the veins eonsist of clay minerals, limonite, gypsum, manganese compounds, malachite, and a |  | | Report (issue) | | INTRODUCTION. reports are those on the Mercur district, by J. E. Spurr and S. F. Emmons; the Bingham...Bingham The senior author, J3. S. Butler, began district, by J. M. Boutwell, Arthur Keith, and field work on...deposits of Utah in the S. F. Emmons; the Park City district, by J. M. FIELD .WORK AND AUTHORSHIP. summer...the Plateau region. The junior author, G. F. Loughlin, began work in the Tintic district in 1911 in collaboration...the Tin tic and Thomas ranges, of the Leamington district, and of districts in theW asatch Range. Several |  | | Book (edition) | | localities but not at others, and an individual occurrence of an ore mineral might change with time from...Chapter 5, "The Genesis of Minerals," and the occurrence data given in the mineral descriptions in Chapters...illustration it might be noted that the mineral axinite has been described in twenty different settings...{hkl} Minerals * 2 2 2 plagioclase, kyanite, axinite, turquoise In the accompanying stereographic projections...diagnostic of this class. It should be noted that the occurrence of striations on the faces of s{l 121} or 's{2111} |  | | Report (issue) | | Professional Paper 177 THE GOLD HILL MINING DISTRICT U'TAH BY T. B. NOLAN UNItED STATES GOVERNMI£NT...______ ___ ___ ___ _ __ ____ ___ ______ Clifton district _ _ __ History of mining and production__ ___...119 II Mines and prospects-Continued. Clifton district-Continued. Mines and prospects-Continued. Veins...Evans__________ _________________ Willow Springs district. ____ __ _ __ ___ _ ____ ___ History and production_________...the ranges in the Great Basin. The climate of the region, like that of the major province, is relatively |
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