 | | Report (issue) | | William "Skip" Simmons and Alexander Falster, pegmatite specialists from the University of New Orleans...pegmatites. Most ore beryl occurs in massive pegmatite zones where crystals may reach considerable size...can be found adjacent to the core margin of the pegmatite and in Suggested Chromophores for Beryl Color-generating...the world's largest known beryl crystal is a pegmatite at Malakialina, Madagascar, which produced one...the giant-sized crystals found in the massive pegmatite portions. Morphology Beryl crystals are hexagonal |  | | Journal (article/letter/editorial) | | The gemmy, intense purple apatites from this pegmatite mine have made Pulsifer the premier locality for...County, Massachusetts. Rather than a granite pegmatite, the geological environment in which this specimen...variety of albite, calcite, epidote, muscovite, quartz, titanite, chabazite, and stilbite. Another important...caught my breath and hoped it wasn’t a shard of quartz. Carefully, I used just my index finger to push...coated and uncoated with chlorite and a few small quartz specimens, but no more fabulous apatites. Of course |  | | Journal (issue) | | CONTENTS Page Feature Articles: The Coolgardie pegmatite field, Western Australia Mark I. Jacobson ......minerals associated with ironstones in the Olary region, South Australia P.M. Ashley, B.G. Lottermoser...sapphires, rubies, zircon, topaz, tourmaline, garnets, quartz and many other minerals used as gemstones. ln 9Chapters...Mineralogy Vol 3, No 2, December 1997 %e Coo(gardie Pegmatite :fie[� 'Western .9Lustrafia Mark I. Jacobson Chevron...70593 California, USA This n otable Australian pegmatite locality has produced a range of lithium minerals |  | | Journal (issue) | | ................................. 2 Himalaya pegmatite,...................................................................................... 2 Unnamed pegmatite occurrence, Volcan Mountains ....................................... 3 Brown Derby no. 1 pegmatite ............................................................................... 3 Ridgefield pegmatite,............................................................................... 3 Strickland pegmatite, ............................................ |  | | Journal (article/letter/editorial) | | report of euhedral serendi bite crystals from this region. Most of the serendibite is massive, occurring...rhombohedra of dolomite, and transparent, pris matic quartz crystallized concurrently. Phase 3 included Volume...throughout the Wausau complex. I n the massive pegmatite, it commonly forms brown prismatic crystals surrounded...surrounded by pleochroic halos. I n some quartz pods in the interior zones of pegmatites in the Stettin...pyrochlore, rutile, anatase, brookite, feldspars, and quartz. It is one of the most abundant and easily obtainable |  | | Journal (article/letter/editorial) | | schroeckingerite, monohydrocalcite, and two new unnamed ( 1 0 ) ( 9 5 1 ,6 6 6 , 1 0 . 2 . ) , 2 . 4 3(...Ca and a little contains new carbonate One unnamed pegmatite ijolite-urtite of in zone in the central cavernous...531 (both -+0.002). Probably orthoGrimselite. Unnamed Carbonates (K.Ca and K.Ca-Mg) rhombic. The strongestX-ray...massesup to 3 X 3 X 2 cm in size in quartz-microcline pegmatite at Fusamata, Kawamatamachi, Fukushima...from the nearby Suishoyama (formerly Iisaka) pegmatite as an alteration product of thalenite. The name |  | | Journal (article/letter/editorial) | | Mines and Minerals of the California Pegmatite Province Downloaded by [Pennsylvania State University]...of the past century, the Southern California pegmatite province has been the source of some of the world’s...(bottom left page). Map of the Southern California pegmatite province, including location of major specimen-producing...The Southern California pegmatite province is a mountainous, semiarid region located within the Peninsular...Ranges of Southern California. Pegmatites in the region are usually clustered into individual districts |  | | Journal (article/letter/editorial) | | MINERALOGY OF AN EVOLVED DICKINSON COUNTY, MICHIGAN, PEGMATITE. T. W. Buchholz1, A. U. Falster 2, W. B. Simmons2...(1961) documented approximately ninety known pegmatite occurrences in central Dickinson County in the...Upper Peninsula of Michigan. A small beryl-rich pegmatite was investigated to describe its mineralogy and...determine its degree of geochemical evolution. The pegmatite is emplaced in Lower Proterozoic metamorphic rocks...probable that the pegmatite is late- to post-Penokean in age. Local control for pegmatite emplacement appears |  | | Journal (article/letter/editorial) | | cross-section and were individually scattered in pyrite-quartz matrix. The grains could be scratched by a pin...phlogopite, prehnite, pyrite, pyroaurite, pyrrhotite, quartz, schorl, shandite, sphalerite, thompsonite, vesuvianite...Hampton submitted several samples from an unnamed pegmatite feldspar mine in Middleton. Two of the specimens...cleavelandite variety of albite, buff microcline, smokey quartz, lepi dolite, pink elbaite, altered zircon, uraninite...found, as well as one single crystal on smokey quartz 2 x 1 cm. Within this cluster of locations, the |  | Kampf, A. R., Adams, P. M., Kolitsch, U., Steele, I. M. (2009) Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. American Mineralogist, 94 (5) 720-727 doi:10.2138/am.2009.3134 | Journal (article/letter/editorial) | | includes (in approximate order from early to late) quartz, barite, apatite-(CaF), goethite, rockbridgeite...quarry in Victoria, Australia, and at an unnamed pegmatite prospect near Linopolis, Minas Gerais, Brazil...phosphatic-argillite of late Paleozoic age. Veins consisting of quartz, barite, pyrite, argentiferousgalena, and sphalerite...(in approximate order from 721 early to late) quartz, barite, apatite-(CaF), goethite, rockbridgeite...leucophosphite, muscovite, and quartz on a specimen from an unnamed pegmatite prospect near Linopolis, Minas |  | | Journal (issue) | | turquoise crystals on either a mica schist or a white quartz breccia recovered from the dumps of this small...but Espenshade (1954) identifies it as a short unnamed inclined adit accompanied by a small dump about...penetrated schist and also a brecciated zone of white quartz; breccia specimens are commonly cemented by turquoise...specimen consists of irregular fragments of glassy quartz which are in part cemented together by thin veins...fragments of the glassy quartz. The turquoise, with its many included quartz fragments, polishes well |  | | Journal (article/letter/editorial) | | igneous rock in which nearly equal proportions of quartz (SiO2), plagioclase, and alkali feldspar (as separate...variety morganite, spodumene variety kunzite, with quartz, lepidolite, and albite, 26 × 17 × 13 cm, Kunar...textural, and mineralogical attributes of a layered pegmatite dike from near Palomar Mountain, San Diego County...innermost feldspathic intermediate zone and the quartz core, as is typical of many occurrences (also see...in composition, and for convenience, the term pegmatite will refer to those of granitic composition in |  | London, D., Morgan, G. B., Paul, K. A., Guttery, B. M. (2012) Internal Evolution of Miarolitic Granitic Pegmatites at the Little Three Mine, Ramona, California, USA. The Canadian Mineralogist, 50 (4) 1025-1054 doi:10.3749/canmin.50.4.1025 | Journal (article/letter/editorial) | | the thinner (Swamp) dike. Fluid inclusions within quartz and topaz from miarolitic cavities of the Main...the temperatures recorded by feldspars in the pegmatite that surrounds the miarolitic pockets, then the...compositions. Keywords: miarolitic, granitic pegmatite, modal analysis, bulk composition, alkali feldspars...Little Three mine are located within the Ramona pegmatite district, ~7.5 km east of Ramona, San Diego County...The Main dike contains the thickest section of pegmatite, 1026 the canadian mineralogist up to ~2.5 |  | | Journal (article/letter/editorial) | | beryllium and the crustal Be cycle from migmatite to pegmatite JOSEPH M. EVENSEN*† and DAVID LONDON School of...melt and alkali feldspars, plagioclase feldspars, quartz, dark mica, and white mica were determined by experiment...alkali feldspar (0.38 – 0.19 from 680 – 850°C), quartz (0.24 at 800°C), and albite (0.10 at 750°C). The...alkali feldspar (0.18 – 0.14 from 680 –700°C), and quartz (0.17– 0.08 from 750 – 800°C), but higher in the...the final stages of the petrogenesis of granite–pegmatite systems. In combination with reported data on |  | | Journal (article/letter/editorial) | | hambergite, danburite, and axinite from three pegmatite dikes (named Main, US Swamp, and Spessartine)...patterns of δ11BTur from margin-to-core of each pegmatite attest to a negligible fractionation of boron...only the bulk isotopic US composition of the pegmatite-forming melts. KEYWORDS AC CE PT ED M AN...influx of fluids from the host rock into the pegmatite (Trumbull et al., 2013). 3 ACCEPTED MANUSCRIPT...using the boron isotopic composition of each pegmatite to ascertain the likely source of the T boron |  | | Book | | Rare-earth minerals in the Alpine ar,d Subalpine region [Switzerland,Austria and Iti:Jy](by C. M. Gramaccioli)...Strontian crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto)...21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil 25:165-170 9 AUTHOR/TITLE...Cassedanne) 8:382-387 Amethyst from the Thunder Bay region, Ontario (by D. G. Ellion) 13:67-70 New data on...on the cause of smoky and amethystine color in quartz (by A. J. Cohen) 20:365-367 Amethyst occurrences |  | | Book | | Roland Bouhelier in 1973 from the "Bouhelier pegmatite", and shortly thereafter acquired by the Canadian...Organic compounds 491 Partially studied and unnamed MSH minerals 494 Gemstones 514 Pseudomorphs...an accumulated repository of partially studied (unnamed) minerals. This is likely to continue for many...and partially studied and unnamed (UK) minerals. For the unresolved unnamed minerals, all available technical...named Monteregie is now the current name of the region. he name Mont Saint-Hilaire is used interchangeably |  | | Report (issue) | | mica ................ Garnet .................. Quartz .................. Accessory minerals ............. 42 ?. Muscovite in the vail zone of the pegmatite in tha Meadow mine, Avery Co. ..................area in the northeastern part of the Spruce Pine pegmatite district* on the Blue Ridge upland in western...abundance are plagioclase, perth.it ic mlcrocline, quartz, and muscovite. All of thess mineral*, as well...which make the mining district accessible* The region is drained by the Toe River and its numerous tributaries |  | | Book (volume) | | Carolina is a source of true emeralds and outstanding quartz crystals. New Hampshire has also yielded a few...California, is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines...rule is usually true only for special items from a region. The common minerals are not usually thus affected...specimens sell for a premium is that visitors to a region seldom arrive when the supply of minerals is being...specimens is sometimes disastrous as well. While rose quartz crystals frequently occur on a stained matrix and |  | | Report (issue) | | 113 Deposits in lower Tertiary rocks Precambrian quartz-pebble conglomerate deposits Phosporite deposits...- Photograph of monazite pocket in the Nambe pegmatite, Rio Arriba County . . . . . . 1 6 0 Figure 40...roll-type tabular Wch (or river) Placer sandstone Quartz-pzbble mglcanerate W i n e black shale Phosphorite...roll-type tabular Wch (or river) placer sandstone Quartz-psChle conglomerate m i n e black shale Phosphorite...sandstone, vein-type, hydrothermal-vein, and pegmatite deposits scattered throughout the state (Fig. |  | | Journal (issue) | | e r a lo j g ic a l Volume Eight/Number Two PEGMATITE ISSUE #1 p u b lis h e r ls * h n Q n i. • ;...83 by R. Lasmanis The Clear Creek Pegmatite: A Rare Earth Pegmatite in Burnet County, Texas............. Iores K IO i DITOR Here it is: our first Pegmatite Issue! Actually this accumulation is a happy accident;...our file of articles I realized we had enough pegmatite-related papers to fill an issue. One advantage...a certain article. The article on the Harding pegmatite, for instance, may not cause “Vol. 8, no. 2!” |  | | Journal (issue) | | Wulfenite | Erupción Mine, Mexico 11 x 10.5 x 5.2cm Quartz var. japan law twin, Ganesh Himal, Nepal, 10 cm...with tourmaline, have sustained the Golconda pegmatite field’s reputation as among the most important...districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a familiar name to mineral collectors...Consequently the authors (CC and AB) traveled to the region in June 2017 and March 2018 to tour the various...for mica produced in Minas Gerais. A rich, new pegmatite deposit in the Brazilian Golconda area, best known |  | | Journal (volume) | | INSIDE THIS ISSUE: • The geology of Double Rock pegmatite • The Kemble family, long-term Franklin mineral...Photos From the Field 11 Geology of Double Rock Pegmatite From the Buckwheat Open Cut, Richard A.Volkert...crystals, epidote crystal druses, stromatolites, pegmatite with a pink scapolite/ diopside mix, and sparkly...on a large wedge of marble with purple fluorite, quartz crystals, and stromatolite patterns. Collectors...International License. Geology of Double Rock Pegmatite From the Buckwheat Open Cut Richard A. Volkert |  | | Journal (issue) | | localities: Spruce Ridge in King County, Washington (for quartz and pyrite) and the Rock Candy mine in British...tourmaline, danburite, forsterite, fluorapatite, topaz, quartz and zircon, plus rare species like hibonite, johachidolite...or even a group of discrete mines but rather a region where, most commonly, crystals are taken from thousands...fine specimens of hambergite, pollucite, topaz, quartz, aquamarine beryl and lepidolite (Hla Kyi et al...gemmy red elbaite crystals clustered on matrix with quartz and feldspar have emerged from Pyinygi Taung, where |  | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...major associations of Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially |
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