 | | Journal (article/letter/editorial) | | Minerals of the axinite group from Norwegian localities Fred Steinar Nordrum, Alf Olav Larsen og Muriel...Erambert Introduction The mineral known today as axinite was first described by Schreiber in 1781, but thought...thumerstein, thumite and glasschorl. The name axinite was first applied by Hauy in 1799, in reference...the common axe-like shape of the crystals. The axinite group minerals are complex cyclosilicates. The...end-members are ferroaxinite, manganaxinite and magnesia-axinite, named after the second most abundant cations, |  | | 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 |  | | Journal (issue) | | ......125 by W. E. Wilson The rediscovery of axinite at Thornberry Mountain near Coarsegold, Madera...& G. Schnorrer-Kohler Arizona's Silver mining district ................................................of a single species figured from one locality (calcite from Derbyshire, England; 466 drawings), and the...differ with every place of discovery, and when the occurrence is exhausted, the crystals are like extinct animals...account for a third of all the crystal drawings: calcite (2,544 drawings), quartz (855), barite (739), pyrite |  | | 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...of increasing hardness: AMR WN talc . gypsum calcite fluorite apatite 2 CON feldspar . quartz topaz...Cleavage: prismatic. Fracture: uneven to poor. CALCITE Luster: to length of crystals; brittle. Hardness:...parting. Violet—Brown Fracture: shell, uneven. AXINITE Luster: glassy. Hardness: 6.5-—7. Streak: uncolored... ZA aX Description of Minerals Actinolite Occurrence: Occurs generally in crystalline schists and |  | | 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...of the following minerals: fluorite, axinite, tourmaline, calcite, idocrase, diopside, and phlogopite...highest part beneath the general area above the Calcite drift (pl. 7). In general the cupola trends N. |  | | 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_________...Wollastonite rcplaced by spadaite; D, Preservation of calcite cleavage lines in jasperoid _ __ _ 96 9. A, Elongated |  | | 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...in 1801. Apparently, study of the cleavage of calcite led Hauy to suggest that crystals are made up of...characteristic shape. He illustrated his hypothesis with calcite and three cubic crystals (Figure 2-2). He also...cleavage rhombohedron, building up a crystal of calcite in the form of the scalenohedron v {2131} [shown |  | | 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 |
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