 | | Journal (article/letter/editorial) | | therefore might be viewed as boring or irrelevant to an advanced collector or high-end mineral dealer. What...Schaller and Vlisidis (1958) and named after the Ajo district where it was found. They characterized the species...of kaolinite, 8.2 cm, from Artonvilla, Musina district, South Africa; collected ca. 2008. Ronnie McKenzie... 8.9 cm, from the Artonvilla diggings, Musina district, South Africa, 8.9 cm. Ronnie McKenzie specimen...recovered from the Artonvilla diggings, Musina district, South Africa. It measures 1.35 meters by 90 cm |  | | Book | | for within several months they asked me to render an opinion as to its suitability for translation and...neglecting the truly important European localities. As an amateur handbook, this one makes no pretense at being...method of indicating increasing quality by the use of an increasing number of exclamation points within parentheses...version are truly those intended in the original. As an outgrowth of this study a number of errors in the...renditions are all the more remarkable because he is an ardent amateur mineral collector and is therefore |  | | Report (volume) | | ___________________.__________ 36 Park City district..----........--------------------------- 37 ...-------------------------------- ^ 37 Ophir district- -------._..___________._____-_-.___________-...Counties___----_-_-_-------------------------Erickson district.__________________________-_-_---_-_---_ Black...Manganese-ore production, Staats and Pratt mines, Detroit district, Juab and Millard Counties.________--_-____.____...production, Guy group (Black Jack mine), Detroit district._______________________________________ 9. Manganese-ore |  | | Report (volume) | | report on manganese resources in the Little Grand district and areas to the eqst, west, and south UNITED...________________________________ Little Grand district.______________________________________________...__-_---__--_-__--__ Area east of Little Grand district.____--_____-_-_____----__-_--______ Deposit west...CONTENTS Area west and south of Little Grand district--_._._ ___________________ Deposit near Saucer...ILLUSTRATIONS Page PLATE 2. Map of Little Grand district, Utah, showing location of manganese deposits |  | Bonnet, Nicolas J., Beauvais, Anicet, Arnaud, Nicolas, Chardon, Dominique, Jayananda, Mudlappa (2014) First 40Ar/39Ar dating of intense Late Palaeogene lateritic weathering in Peninsular India. Earth and Planetary Science Letters, 386. 126-137 doi:10.1016/j.epsl.2013.11.002 | Journal (article/letter/editorial) | | The S2 surface levels the summits of the belt over an altitude range of 900 to 1100 m and exposes deep...∼1000–1016 m. Our study is mainly focused on the Mn ore open-pit mines carved in this surface (Fig. 2b–c). Relicts...Relicts of paleo-land surface S3 extends below S2 over an altitude range of 750 to 850 m (Fig. 2c), and are...surface S3d occur as benches below the S3 surface over an altitude range of 700–750 m above the modern river...3). Description of samples precisely located on open-pit mine benches allowed the establishment of log |  | | Journal (article/letter/editorial) | | Geological Setting The small abandoned Smartt open pit mine is located in the southeastern part of the...contrast, is composed of todorokite, manjiroite, pyrolusite, residual braunite and chalcedony. The altered...the asbestiform veinlets and cryptomelane and pyrolusite form at the expense of todorokite, manjiroite...polish very poorly, whereas manjiroite fibres take an excellent polish. Densely packed asbestiform manjiroite...(Figure 2C). They are intergrown with euhedral pyrolusite crystals (Figure 2B) and coated by thin films |  | | Report (volume) | | MANGANESE DEPOSITS OF THE LYNDHURST-VESUVIUS DISTRICT AUGUSTA AND ROCKBRIDGE COUNTIES VIRGINIA BY MAXWELL...Geologic map and sections of the LyndhurstVesuvius district, Augusta and Rockbridge Counties, Va............Virginia, showing location of Lyndhurst-Vesuvius district............... 164 Map of Lyndhurst mine and Vicinity............. 182 Nap and cross sections of main open pit of Mine Bank mine, Augusta County, Va........... MANGANESE DEPOSITS OF THE LYNDHURST-VESUVIUS DISTRICT, AUGUSTA AND ROCPCBRIDGE COUNTIES, VIRGINIA By |  | | Journal (article/letter/editorial) | | deposits. Cherokee County also contains an iron ore district. An important iron industry flourished in...until shortly after the War Between the Left: Pyrolusite, dendritic habit, length of largest central group...vugs in schist, West Pit Barite—four distinctive types, see text of article, West Pit Beraunite—deep red...West Pit Bornite—disseminated grains or small massive areas occur in schist and quartz, West Pit Cacoxenite—sprays... West Pit Chalcanthite (tentative)-observed as coatings on the underside of boulders, West Pit Chalc |  | | Report (issue) | | ore reserves. In the summer of 1917 the Pioche district was examined by J. B. Umpleby and some of the...1918, E. L. Jones, jr., examined the Las Vegas district. The Siegel and Nevada districts and several of...J. T. Pardee. The description of the Las Vegas district was written by E. L. Jones, jr., and the remainder...Mountain district. The Darky and Black Metals mines and the deposits in the Nevada district have features...manganese is more or less abundant, and in the Pioche district the manganese occurs as manganiferous siderite |  | | Report (volume) | | ................................ Cartersville district.................................................................................. Cave Spring district.................................................region................................ Batesville district.................................................................................. 132 Butte district.................................................................................... Leadville district.............................................. |  | | Journal (issue) | | Articles Famous mineral localities: Bleiberg, Carinthia, Austria ...........................................Cuprocassiterite discredited as mushistonite; and an unnamed tin mineral from the Etta mine ..........................383 by P. J. Dunn & W. L. Roberts An author's guide to writing locality articles for the...6 cm, from the Stefanie mine at Bleiberg, Carinthia, Austria. Photo by Werner Lieber. For a detailed review...designed envelopes printed up for the oc casion, with an appropriate illustration (called a “cachet”) on the |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...combination of space for growth, sufficient time and an adequate supply of chemical nutrients. Well-formed...unimpeded by nearby crystals, in places such as open fractures and cavities in are discovered and collected...them with crystals. In the larger open spaces, the crystals can reach an impressive size. Among the many...carbonate. Geologists can figure out how quickly an igneous rock formed by the calcium carbonate can |  | | Book (edition) | | groups: The number of new mineral species may grow as an avalanche, flooding the mineral population with tens...lepidolite, wolfrarnite). In many cases, minerals have an intermediate composition between theoretical end-members...to crystallographic tenns (e .g. prismatine), to an organization (e.g .. mgriite). to a journal (minrecordite)...form. Many minerals display characteristic twinning, an intergrowth of two or more individual crystals of...Miller indices are used. For instance, the symbol for an orthorhombic dipyramid form is { 111}, for a hexagonal |  | | Journal (issue) | | F. J. Parker Tveitite from the Barringer Hill District, Texas..................................387 byW...slide competition. e. “PRO” if you do not qualify as an amateur as defined above. 2. Maximum of two entries...water-color artist, George was an authority on Arizona mineral localities, an interest he acquired through...two small occurrences were uncovered in the two open pits o f the Rokana mine, Zambia, which contained...world. A total of 11 under ground mines and eight open pits are operated on the Copperbelt by the ibethenite |  | | Journal (article/letter/editorial) | | Gold M. From Rte. 634 at clus ter of white houses an abandoned woodroad leads N. 1 Mi. N keep straight...of ore 3 Mi. S of Linden. John Marshall operated an area 1 Mi. ENE of Chester Gap (Rte. 522), nr Ap...Freezeland off Rte. 638 and about 2 Mi. N of Linden. A pit remains % Mi. E of Road. Some operations showed copper...Bealton and nr Deerfield Farms sign. This has been an old sawmill site and the trenches are sawdust filled...no explanation is available. Kemper Barite M. is an old shaft across the road now nearly filled and a |  | | Journal (issue) | | Arthur Roe Famous Mineral Localities: The Brumado District, Bahia, Brazil..................................in lo c al c u rre n c y to th e fo llo w in g : C an a d a : M rs. J.W P e at. 36 D e e p w o o d C re...was made possible by more than a hundred donors, an enthusiastic audience, the Tucson Show Committee...Clarence Maier officiated again this year, and did an admirable job of working with the huge audience,...available at the original retail price.) Despite an offer to buy copies of the Colorado Issue (vol.7 |  | Pačevski, Aleksandar, Cvetković, Vladica, Šarić, Kristina, Banješević, Miodrag, Hoefer, Heidi Eva, Kremenović, Aleksandar (2016) Manganese mineralization in andesites of Brestovačka Banja, Serbia: evidence of sea-floor exhalations in the Timok Magmatic Complex. Mineralogy and Petrology, 110 (4) 491-502 doi:10.1007/s00710-016-0425-7 | Journal (article/letter/editorial) | | lumps and nests filling cracks and cavities within an autoclastic andesite, which was deposited in a subaqueous...pumpellyite-Mn, orientite, bustamite) and Mn oxides (pyrolusite, manganite). Micrometer-scale mineral intergrowths...rare associated minerals are hollandite, crednerite, an unknown REE mineral, powellite, pyrite, barite and...vein-style Mn mineralization filling cracks and open spaces in andesitic autobreccias and suggested a...composition were dated radiometrically revealing an age range of 83–80 Ma (Table 1). The TMC magmatic |  | | Report (volume) | | Bulletin 931-M MANGANESE DEPOSITS IN THE NEVADA DISTRICT WHITE PINE COUNTY, NEVADA, BY RALPH J. ROBERTS...bodies..../.. Northwest pit............ Central pit............... Southeast pit............ 295 295 299...Geologic map and sections of part of the Nevada district, White Pine County, Nevada. ....................Nevada district............................. 296 30. Geologic map and section of the Northwest pit, Essex...Geologic map of Central pit, Essex claim...... 33. Geologic map of Southeast pit, Essex No. 1 claim... |  | | Book (edition) | | Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Atlases in Geoscience...Geoscience 3 THE ORE MINERALS UNDER THE MICROSCOPE An Optical Guide Second Edition Bernhard Pracejus Sultan...environment that has not yet been examined adequately. An example for such a situations can be seen in euhedral...(previous and new) were electronically enhanced through an increased resolution (not sharpness) to counter fuzziness...al. (1999), Naldrett (2005), Strunz et al. (1958). An enormous wealth of data regarding mineral associations |  | | Journal (article/letter/editorial) | | MINNESOTA'S IRON RANGES Figure 1: Open pit mine on a direct shipping orebody, Mesabi Range. Light gray...glacial drift. Dark material in the base of the pit is hematite ore. Medium gray bedded material in the...represent the same period of sedimentation and to be an offshore continua tion of the Mesabi. The rocks...2: Initial stage in the development of an open pit mine on an orebody along the Mesabi Range. (Photo...formation of the early Precambrian Ver milion District is frequently called jaspillite, a term also used |  | | Book (edition) | | ARIZONA • Wu!fenite. Red Cloud mine, Si/district, Trigo Mountains, La Paz County, Arizona. Smithsonian...Hydrothermal Deposits 63 The Bisbee District, Cochise County 64 The Tombstone District, Cochise County 70 The Mammoth-St...augmented; a discussion of the classical Tombstone district has been inserted between those of Bisbee and...time wasted. We disagree. We believe that view to be an unproductive assessment of the human relationship...C., et al., 1976 [ ] Not included in total; not an accepted species * Found in meteorites ' 8 Introduction |  | | Book (edition) | | Anthony, Sidney A. Williams, and Richard A. Bideaux AN THE UNIVERSITY OF ARIZONA PRESS TUCSON, ARIZONA...inclusion of color reproductions in this volume. AN 75 ( / ye wae ye 7 st 4 a 4 uf THE UNIVERSITY...significant share of the literature research while an undergraduate in geology at the University of Arizona...sometimes tiring bibliographic investigations with an exceptional maturity of scholarship. Without the...2. Porphyry Copper-Related Deposits The Bisbee District The Mammoth-St. Anthony Mine, Tiger Lee Le 2A | | | Book (edition) | | significant share of the literature research while an undergraduate in geology at the University of Arizona...sometimes tiring bibliographic in vestigations with an exceptional maturity of scholarship. Without the...2. Porphyry Copper-Related Deposits The Bisbee District Tl1e Mammoth-St. Anthony Mine, Tiger 17 17 21...calcite Malachite in calcite Malachite replacing an azurite crystal Cuprite Cerussite Cerussite on dioptase...working in the state, augmented by the contributions of an ever-increasing number of skilled amateur collectors |  | | Journal (article/letter/editorial) | | Twinning on (01 I } and contact Dr. Robert B. Cook, an executive editor of Rocks & Minerals, is a professor...which includes the familiar species cassiterite, pyrolusite, and plattnerite, and is trimorphous with anatase...hydrothermally altered rocks and is often seen as an accessory mineral in a variety of regional and c...pyrophyllite. Microscopic rutile inclusions play an important role in star stones and cat’s eyes, and...has been produced commercially from the Roseland district of Amherst and Nelson Counties. Excellent specimens |  | | Journal (article/letter/editorial) | | Tennessee Mineral Locality Index 300 T ennessee covers an area of 41,220 square miles in the southeastern United...and mineral resources of the state. Mining has been an important part of Tennessee industry, and later publications...City zinc district, the Bumpass Cove iron-zinc-manganese district, the Sweetwater barite district, and the...deposits. The Ducktown copper district represents the most complex mining district and contains the largest...1.25 miles ENE of Weatherly Switch: hematite, pyrolusite, psilomelane, wavellite (Stose and Schrader 1918b) |
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