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| Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...COLUMBIA Ice River complex. The Ice River complex is an intrusive body of alkaline igneous rocks where sodalite...ilmenite specimens have come from an unusual calcite vein-dike occurrence with an exposure very near, indeed...consists of ilmenite. magnetite, anatase, biotite, microcline and minor fluorapatite (Robinson and Chamberlain...2008, when extensive blasting for construction of an extension to High,, ay 5 revealed veins of massive |
 | | Report (issue) |
| 5371-2-7 Printed in Germany Above: Schor! and microcline from Pakistan's world famous Gilgit area. The.......... 54 Alfredo Petrov • Burmese Tourmaline - An Historical Perspective ........................ 58.... . ......... 68 Maximilian Glas • Pegmatites - An Overview .............70 William B. Simmons • From...19 sapphires, 26 spinels, 25 emeralds, 15 rubies, an aquamarine and 20 pearls. The large (39.5 x 36.5...bedecking the crown, especially the sapphires, are of an exceptional quality. Seven of the sapphires, all |
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| . . . . .. . . . . . . . . . . . . . . 12 MICROCLINE GRANITES . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . 14 PEGMATITE OCCURRENCES . .. .. . .........................18 THE PEGMATITE OCCURRENCE OF LUOLAMÄKI . . . . . . . . . . . . . . . . . . . 19 PEGMATITE OCCURENCES... . . . . . . . . . . . THE PEGMATITES OF THE MICROCLINE GRANITES. . . . . . . . . . . . . . . . 21 22...host r ocks in the vicinity of the village of Torro, an area on the boundary between the communes of Somero |
 | | Report (issue) |
| extralapis No. 13: Topas Das prachtvolle Mineral, der lebhafte Edelstein with the permission of Christian...topazes, weighing a total of 3.03 carats on the lower wings. The small stones in the wings, totaling 19...forms desirable collector specimens. The mineral is an aluminum fluorosilicate with the composition Al2SiOiF...pinacoid {001} is conspicuous. Topaz crystals from pegmatite pockets are commonly etched, and crystals from...hydroxyl that form a mixed, close-packed array with an ABCB stacking sequence (graphic page 6). In topaz |
 | | Journal (article/letter/editorial) |
| and, similarly, in the gem gravels of the Mogok district of Burma. Emeralds, especially, were known to...probably knew of pegmatite outcrops but paid no attention to them, and where pegmatite exploration was...such efforts resulted in the production of the pegmatite minerals that we prize so highly, including beryl...larger ions of oxygen. The symmetry of these rings on an atomic structural scale is reflected in the symmetry...megascopic scale. The central space in each ring forms an unbroken channel parallel to the c-axis and is large |
 | | Book (volume) |
| considering its age — this could almost be considered an updated version). This is by no means a complete...Minerals are capitalized while rocks have been left lower case. This is the 5th printing and each time updates...Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers |
 | | Book (volume) |
| considering its age — this could almost be considered an updated version). This is by no means a complete...Minerals are capitalized while rocks have been left lower case. This is the 5th printing and each time updates...Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers |
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| ......................258 Missouri – New Lead District Map .........................................................325 New Jersey – Franklin Mining District Map ............................................Texas – Fluorite in the Terlingua Quicksilver District .................................455 Texas – Sulfur..............502 Vermont – Orange County Copper District Site Map ...................................503...considering its age — this could almost be considered an updated version). This is by no means a complete |
 | | Book (volume) |
| pans. Many other gem crystal species occur in pegmatite exposures, such as Aquamarine, Beryl, some Ruby-red...GRAYSVILLE, SE 1½ mi., in Knox dolomite exposed in an abandoned quarry Barite, Calcite, Fluorite (purple...shark teeth. CHATTOOGA COUNTY GORE, N 6 mi., along lower slopes of Taylor RidgeHalloysite. SUMMERVILLE:...areaAlmandite garnet; (g) harmony Church, area pegmatite outcropsBeryl; (h) Hickory Flat, 2 mi. NE on rd....mi. region surrounding this town contains many pegmatite dike minesMica minerals, Quartz crystals, Aquamarine |
 | | Report (chapter) |
| area . Lucy pegmatite. Results of the drill program . ..... . .. . . . Artdon pegmatite Subsurface pegmatite..... . . ... . . Molly and Bendum claim s Deer pegmatite , West Hawk Lake. . . . . . . . . . . . . . ....Lake .. ... . . . ... ..... .. . . . . . Beryl pegmatite north of Telford. 7 7 9 9 12 12 12 15 16 17 17...Lake/Cat Lake areas General statement 19 19 Pegmatite dykes in the Pointe du Bois area (Lac du Bois...Lamprey Falls) Lac du Bois pegmatite K-1 pegmatite . Lucky NO.3 pegmatite Pine claim , Winnipeg River |
 | | Report (volume) |
| Bulletin 922-T TIN-BEARING PEGMATITES OF THE TINTON DISTRICT LAWRENCE COUNTY, SOUTH DAKOTA A PRELIMINARY REPORT...Oligoclase-quartz-muscovlte pegmatite............ Tourmaline-bearing pegmatite and quartz-tourmaline veins....... Albite-quartz pegmatite.......................... Spodumene-quartz pegmatite...................... lenses................... Mlcrocline-quartz pegmatite...................... Alblte-quartz-muscovite...IV 90. Geologic map and section of the Tinton district, South Dakota................. In pocket 91o Geologic |
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| Elizabeth Queen 5500 Egypt the part is anywhere an beryl deposits, of fine crystal Sinkankas has ...Poisons and Venomous Bites, Pregnancy, 127 Austria, Vision and Diseases of the Epilepsy, 124 Russia...Treatment for Cabochons, Australia, 363 331 Austria, Beryl Carvings, 332 Faceted Gems, and Gems...edge are which contains turquoise, The much an the National stones in their relation to mankind...but I hope that the material included presents an adequate portrait of a mineral whose history |
 | | Journal (article/letter/editorial) |
| BUTTE PEGMATITE BELT Silver Bow and Jefferson Counties, Montana E618 By R A Y M O N D L A S M A N I...collection from the Butte, Montana Pegmatite Beit. During boyhood days, I took an occa sional trip via train...mineral shop of Hugh A. Ford. I would then spend an hour or more rating the pros and cons of various...on dis play compare with the best from other pegmatite regions, such as Colorado, New England, etc.)...vugs contain crystals of quartz, orthoclase, and microcline, with interstitial sericite and minor black tourmaline |
 | | Journal (article/letter/editorial) |
| Sierrita Mountains. Barbara Muntyan photo. I have been an avid field collector for more than forty years. Most...Kingston"] at 08:13 13 August 2013 Figure 6 (below). An Evan Jones aquamarine, 2 inches in width, from the...Sierrita Mountains. In September 2008, I purchased an Arizona aquamarine crystal; it was a simple prism...matrix, that is now in the collection of Evan Jones, an Arizona collector/dealer. My newly acquired aquamarine...locality was allegedly “lost.” There is actually an urban myth regarding a graduate student from the |
 | | Journal (article/letter/editorial) |
| • An unique mineral suite in a syenite pegmatite at Virikkollen, Sandefjord, Larvik Plutonic Complex...Introduction In April 2010, a cavity in a small syenite pegmatite dike was discovered at Virikkollen, Sandefjord...all belonging to the hydrothermal stage of the pegmatite formation, have so far been identified from the...Norway is reported from here, besides the find of an aspedamite-like mineral (UK-H). In this paper we...this cavity. Regional geology The Virikkollen pegmatite belongs to the Larvik Plutonic Complex (LPC) which |
 | | Journal (article/letter/editorial) |
| Corps Base CA Blue Mine X Yucca Valley Gem Pegmatite Landers Joshua tree MICHAEL P. HUNERLACH 148...significant gem-bearing pegmatite north of the well-known Southern California gem pegmatite fields. Early in...in 2006, Dave, an avid field-collector friend, asked me to identify an unknown blue “hexagonal” crystal...Desert area. Dave’s locality, the California Blue pegmatite, Downloaded by [Heriot-Watt University] at 15:13...you have an eleven!” This encouraged him to dig into the deposit and better expose the pegmatite. To my |
 | | Book (volume) |
| (lined with crystals); (b) Hamilton Quarry, the lower Warsaw section at the top of the quarry (see map)...fossils. There are no igneous or metamorphic rock outcrops in Indiana. The four great periods of glaciations... This and adjoining Brown Co. have also produced an astonishing 30 Diamonds over the last century. These... of most of central and southern Indiana produce an abundance of these minerals.) COXVILLE, area coal...Marcasite, or Pyrite. WASHINGTON COUNTY PEKIN, W 1¼ mi., an abandoned quarry⎯Barite, Calcite, Selenite, Sphalerite |
 | | Book (volume) |
| (lined with crystals); (b) Hamilton Quarry, the lower Warsaw section at the top of the quarry (see map)...fossils. There are no igneous or metamorphic rock outcrops in Indiana. The four great periods of glaciations... This and adjoining Brown Co. have also produced an astonishing 30 Diamonds over the last century. These... of most of central and southern Indiana produce an abundance of these minerals.) COXVILLE, area coal...Marcasite, or Pyrite. WASHINGTON COUNTY PEKIN, W 1¼ mi., an abandoned quarry⎯Barite, Calcite, Selenite, Sphalerite |
 | | Report (volume) |
| Geological Survey studied and mapped the pegmatites in an area of about 58 square miles near Middletown. The...siltstone of Triassic age, bounded by normal faults. An east-trending fault of indeterminate age probably...similar to the main part of the body. This type of pegmatite is of limited economic value. About 25 percent...center of the pegmatite. As many as five distinct units, or zones, parallel to the pegmatite wall-rock contact...contact have been noted in an individual pegmatite. In some pegmatites fracture-filling units of quartz |
 | | Journal (issue) |
| a oolle-ction can be made and cared for; to keep an accurate and permanent record of all mineral looalities...Association and enjoy all the advantages which such an ,affiHation affords. A number of clubs hold membership...membership in the Association, participate in the an,.ual outings, and co-operate in many ways in furthering...Briefly it says that in cutting and polishing diamonds an electric arc is now being used running a current...Lapidary Technic, pp. 89-126. It is 6 x 9¼ in size, has an attractive yellow and green / aper cover, and sells |
 | | Journal (issue) |
| Zoned eosphorite from Lavra da Ilha, Taquaral district, M inas Gerais, Brazil ................................................. 418 by J. S. White, Jr. An uncom m on margarite/corundum assem blage from Sterling...p p le m e n t in th is issue). Photo by H arold an d Erica Van Pelt. Copyright 1990 © by the Mineralogical...room. For this project we have also commissioned an English translation of the Latin preface, compiled...Hermes, the Parisian purveyor of silks, has produced an attractive silk print cloth covered with eighteenth-century-style |
 | | Journal (issue) |
| Zoned eosphorite from Lavra da Ilha, Taquaral district, M inas Gerais, Brazil ................................................. 418 by J. S. White, Jr. An uncom m on margarite/corundum assem blage from Sterling...p p le m e n t in th is issue). Photo by H arold an d Erica Van Pelt. Copyright 1990 © by the Mineralogical...room. For this project we have also commissioned an English translation of the Latin preface, compiled...Hermes, the Parisian purveyor of silks, has produced an attractive silk print cloth covered with eighteenth-century-style |
 | | Journal (article/letter/editorial) |
| granite itself is traversed by numerous small pegmatite dikes. I t is interesting to note that the Older...albitization. In addition to these three groups the pegmatite suite also includes quartz-tourmaline w~ins and...and quartz-sillimanite veins. (a) Microcline-quartz-pegmatites.---The bulk of the pegmatites within the...the Older Granites are simple microcline-quartz types. They also occur in the schists and gneisses but...contain cassiterite and columbite-tantalite. (b) Microcline-quartz-mica-pegmatites.--The bulk of the economic |
 | | Journal (article/letter/editorial) |
| these minerals which I obtained in 1936. The pegmatite from which they came is the old, classic locality...done in the early days was conducted on an exposure of pegmatite on the upper flank of the mountain forming...side of Lac Pied du Monts, about one mile from the lower end of the lake. These workings lie about 600 feet...about 12 leet wide, cutting dark gneiss,and with an apparent northeasterly strike. At the east end, the...side, and at the lower, or west end, two short tunnels have been driven. The lower of these has been |
 | | Report (issue) |
| 15th DJST., DeKALB COUNTY, GEORGIA, SHOWING PEGMATITE DIKE IN MICA SCHIS'.r. FRONTISPIECE GEOLOGICAL...and a second detailing the nature of the rock pegmatite and the uses, values, and the like, of its most...LIS'J' OF ILLUSTRATIONS CHAPTER I. iii iv PEGMATITE . . . . . • • . . . . . . . . . . . . . . . ....Lincoln, Wilkes, Taliaferro, Greene, Putnam, Jasper an•l .Tones counties .................................Pntt•ut ()fl'ic·e on methncls for extrading pot,sh an |
