 | | Journal (volume) | | Survey of Finland Bulletin 314 On the granitic pegmatites of the Eräjärvi area in Orivesi, southern...southern Finland b y Seppo I . Lahti Geologinen tutkimusla itos Espoo 1981 Geological Survey of Finland,...GRANITIC PEGMATITES OF THE ERAJARVI AREA IN ORIVESI, SOUTHERN FINLAND by SE P PO 1. L A H TI with 23 figures...pegmatites of the Eräjärvi area in Orivesi, southern Finland. GeoLogicaL Survey of FinLand, BuLLetin 314...appendices. The pegmatites of the Eräjärvi area (Orivesi, Finland) are middle Proterozoic granitic dyke |  | | Journal (volume) | | Geological Survey of Finland Bulletin 368 Pollucite and its alteration in Finnish pegmatites by David...tutkimuskeskus Espoo 1993 Geological Survey of Finland, Bulletin 368 POLLUCITE AND ITS ALTERATION IN...alteration in Finnish pegmatites. Geological Survey oi Finland, Bulletin 368. 39 pages, 20 figures and 5 tables...mineralogy of pollucite-bearing pegmatites in Finland has been reviewed and combined with recent field...Finnish Precambrian (Luolamäki, Somero; Viitaniemi, Orivesi; Haapaluoma, Peräseinäjoki, and Oriselkä |  | | Journal (volume) | | pegmatites in the Peräseinäjoki-Alavus area, South Pohjanmaa, Finland by Ilmari Haapala Geologinen tutkimuslaitos...PEGMATITES IN THE PERÄSEINÄJOKI-ALAVUS AREA, SOUTH POHJANMAA, FINLAND BY ILMARI HAAPALA WIT I-I 37 FIGURES...joints. A description of the general geology of the area, completed with a petrological and a tectonic map...bodies and fracture fillings. From the Haapaluoma pegmatite the following minerals, inter aha, are described:...and columbite are presented. From the Hunnakko pegmatite mineralogical description of montebrasite, alluaudite |  | | Journal (article/letter/editorial) | | X-ray fluorescence for lepidolite of various pegmatite subtypes, morphology ("book", "scaly", "fine-grained")..."fine-grained"), position within the pegmatite (primary zones, replacement units, pockets), mineral assemblages...Glimmern aus granitischen Pegmatiten Granitische Pegmatite, die dutch fortgeschrittene Anreicherung und Fraktionierung...a high-pressure, low-temperature condition of pegmatite crystallization in contrast to the low-pressure...usually forms late in the consolidation of the pegmatite, occurring as primary "books", or medium- to fine-grained |  | | Journal (article/letter/editorial) | | occurred several hundred yards east of the parking area at the western base of the first east-west ridge...relative uniformity of regional metamorphism of the area. Although triplets of mica were previously unknown... The Chickering mine is located in the Keene pegmatite district of southwestern New Hampshire. Recognized...the Chickering is an important locality. The pegmatite was mined for potassic feldspar for an unknown...Chickering pegmatite is well zoned and contains two zones typified by a quartz-cleavelandite-perthite assemblage |  | | Journal (article/letter/editorial) | | mineralogy and crystallography to the paragenesis of pegmatite minerals. He was the second recipient of the Mineralogical...to mind. The specimen is associated with the cleavelandite variety of albite. John Veevaert specimen and...elbaite, smoky quartz, spodumene cleavages, the cleavelandite variety of albite, lepidolite, and microcline...discovery of many of the now-famous Brazilian pegmatite localities (Cornejo and Bartorelli 2010). The...Specimens in the collection from the Sapucaia pegmatite are incredible, with one noteworthy piece consisting |  | | Journal (article/letter/editorial) | | rare-element granitic pegmatites: Separation Lake area, N.W. Ontario, Canada A. G. Tindle1 and F. W. Breaks2...accepted February 14, 2000 Summary The Separation Lake area is host to the most important rare-element pegmatites...include the Big Whopper and Big Mack petalite pegmatite systems which potentially represent the world's...rare-element-enriched, Li mica-¯uorapatite-cleavelandite pods. Zonation patterns seen in backscattered...F. W. Breaks Die wichtigsten Seltene-Element-Pegmatite von Ontario liegen im Gebiet des Separation Lake |  | | Book | | Painopaikka | Printing house: Lönnberg Print & Promo, Finland ISBN 978-952-217-253-2 (sid.) ISBN 978-952-217-254-9...Geological Survey of Finland Espoo 2017 SUOMEN KORUKIVET Gemstones of Finland Kari A. Kinnunen Risto... In addition, the rock types commonly used in Finland as gemstones, are now documented in detail. Photography...demonstrate that more gemstones are known from Finland than from other Nordic countries.The great activity.... . . . . . . . . . . . . . . . . 31 Western Finland 215 Beauty is born from shape . . . . . . . |  | | Journal (issue) | | Richard A. Bideaux M ineralogist feature articles Pegmatite Phosphates: Descriptive Mineralogy and Crystal...exhibit available to serve such a large geographic area. A good part of the current revival of interest...roundup of the Micro Miner alogists of the Capital Area; the convention at Rochester, New York; the exhibition...much work on the mineralogy of the Oka, Quebec, area, a favorite collecting ground of most M ay—June...Supply Co. $65.00. The Mineralogical Record Pegmatite Phosphates: Descriptive Mineralogy and Crystal |  | | Journal (issue) | | placed seasonally in Spring or Summer. As far as the area and the venue is concerned, we are willing to cooperate...who want to implement the second GeMin in their area. To organize an exhibition is not an easy task and...Thucolite , Finland (6,5 X 5 X 3,5 cms) , - (6,5 X 5 X 3,5 .) (Thucholite from Viitaniemi, Finland. -Viitaniemi...-Viitaniemi pegmatite, Finland. As small black balls in cleavelandite ) Vitaniemi – Vitaniemi ) -NEWS ON...the site of Nychia, a slope full of obsidian. The area is shown on the map below and is relatively easily |  | | Journal (article/letter/editorial) | | ’analysis, 1,231 crystals yielded acceptable area calculations. Area calculations of these 1,231 crystals provide...calcite forms. The most important form, based on total area of the 1,231 crystals, is the prism ( lO.O}. The...4 6 I I I I I llll - The Madoc, Ontario, area is well known for its sulfosalts occurrences: Precambrian...siderite, and wavellite. The typical geology of the area is topsoil, sand, a leach zone of aluminum phosphates...southern portions of the mine. INVESTIGATION OF A PEGMATITE LOCALITY IN WOODBURY, CONNECTICUT. R. C. Huff |  | | Book (volume) | | Sweden, are more numerous than Maine's, as well. An area smaller than Oxford County in Murmansk Ob last,...California, is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines...individuals who have no experience outside of their home area. The first specimen that they see is by definition...for quarry Q, mine M, prospect P, locality L, and area A. Example: Newry - Bell Pit, Crooker Q, Dunton...distinguished from an area (A), by being a specific, "known" spot to obtain a mineral, while an area implies greater |  | | Journal (issue) | | Ginsburg et al. (summa rized in Cemy, 1982b, c). Pegmatite investigators in the U.S., notably Jahns (Jahns...trend in the western U.S. and Mexico. Within the pegmatite group, the complex, zoned intrusive type outnumber...total volume of around 50 km3 of lava, covering an area of around 100 km 2 flowed from at least 12 separate...high fluorine contents. The Brown Derby No. 1 pegmatite in Gunnison County, Colorado, is described by...respects it is a typical lithium-rich, epigenetic pegmatite, though it has an unusually high fluorine content |  | | Book | | Beryl in Rhyolite, 435 Ecuador, 438 339 438 Finland, 438 Early Magmatic, 339 France, French Beryl...public ed. and E., Lapidibus. 27. South-eastern area, of Geology of the and Geology D, Eichholz...obtained Canova, in 16 1537, name called an area the first Captain Pedro Fernandez Valenzuela.... Cheapside Hoard, described by Wheeler 39 an area of and illustrated 40 among faceted which...so that the others. found that analyses of pegmatite beryls 2 = ions Kleeman neutrality. to be |  | | Book (chapter) | | triangular agate, polygonal umgrentzte Achate (Ger.), pegmatite agates, quasicrystals, angle-plated quartz, Zwickelfülling...standards, crystal but also in the central left area. The arrows indicate the zones of dissolution and...with a crack running through the crystal with an area of rather uniform calcite orientation in the center...overall rate is controlled by the large surface area of the cuttlebone. As the reaction progresses the...exhibited in the the surface of a metasomatized area in chlorapatite 900 C, 1000 MPa FAP-KCl brine experiment |  | | Book | | triangular agate, polygonal umgrentzte Achate (Ger.), pegmatite agates, quasicrystals, angle-plated quartz, Zwickelfülling...standards, crystal but also in the central left area. The arrows indicate the zones of dissolution and...with a crack running through the crystal with an area of rather uniform calcite orientation in the center...overall rate is controlled by the large surface area of the cuttlebone. As the reaction progresses the...exhibited in the the surface of a metasomatized area in chlorapatite 900 C, 1000 MPa FAP-KCl brine experiment |  | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...southwestern Transbaikalia, and in the Lake Baikal area, USSR; at Pitigliano, Tuscany, Italy; and at the...pearly on cleavages. MODE OF OCCURRENCE: Found in an area along 8 AGRINIERITE the Kipawa River, Villedieu...Wyoming, South Dakota (cleavelandite). Also in Canada (peristerite), Brazil (cleavelandite), England, Nor- ...ores from Cobalt, Ontario; in ore from the Red Lake area of Ontario; reported in ore from the Consols Mine | | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...southwestern Transbaikalia, 1u1.d in the Lake Baikal area, USSR; at Pitigliano, Tuscany, Italy; and at the...pearly on cleavages. MODE OF OCCURRENCE: Found in an area along 8 AGRINIERITE the Kipawa River, Villedieu...from Cobalr. Ontario; in ore fron1 rhe Red Lale area of Ontario; reponed in ore fron1 the Consols ~line...Occurs in large masses in pegmatite at several mines in the Custer-Pringle area, Custer County, at the Etta |  | | Book (edition) | | feldspar and slightly smoky quartz, (b) Very coarse pegmatite at least 8 m (26 ft) thick at Urubu, near Araçuai...and elsewhere are famous for carrying gold, and pegmatite veins may contain minerals with rare elements...mountains where heat flow may be high over a wide area and the stresses and strains of mountain building...under both igneous rocks (as a stage following pegmatite formation where hydrothermal minerals were formed...precious opal found in volcanic rocks. In the Querétaro area of Mexico, fire opal has formed in cavities in rhyolite |
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