 | | 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 (article/letter/editorial) | | ty'uyamunite, rauvite, hewettite, steigerite, and limonite. The name is for the Navaio Indians. Mrcrarr Fr-nrscrrsa...Vornonru, Viiyryneniiti, [BeMn(POr)(OH, F)], Geologi,(Finland),6, P. 7 (1954). Pteliminary announcement. The...all +.001. G.:3.183. From the Viitaniemi pegmatite, Eriijiirvi, Finland. The name is for Heikki Viiyrynen...and 2.4i4 h. Tavorite occurs in the Supucaia pegmatite, Minas Gerais, intimately intergtown with barbosalite |  | | 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...m pocket in marble.Associated minerals are : “limonite”,smithsonite and gypsum General appearance : Heavily...included in gypsum, and is further associated with limonite and smithsonite, found in one large pocket in...Thucolite , Finland (6,5 X 5 X 3,5 cms) , - (6,5 X 5 X 3,5 .) (Thucholite from Viitaniemi, Finland. -Viitaniemi |  | | 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...in highly convoluted concretionary ironstone (limonite) formation, giving the appearance of crystal-lined |  | | 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 |  | | Book (volume) | | sufficiently complete reference books and databases in this area. The book “The Infrared Spectra of Minerals” (Farmer...2009) from the Yoko-Dovyren massif, Northern Baikal area 14 1 The Application of IR Spectroscopy to the...Ca2[Si2O5(OH)2]·H2O from the YokoDovyren massif, Northern Baikal area Fig. 1.18 IR spectrum of acid triorthosilicate...yegorovite Na4[Si2O4(OH)2]2·7H2O from the Palitra pegmatite, Lovozero massif, Kola peninsula hydrated proton)...Ulexite NaCaB5O6(OH)6·5H2O Locality: Bulganak area of mud volcanos, Kerch peninsula, Crimea, Ukraine |  | | Book | | a fracture, producing such forms as aegirine pegmatite. As well, hot hydrothermal fluids often carry...sediment sometimes form fossils. Orbicular granite, Finland + 99 x 74 x 31 cm. This uncommon type of intrusive...come from deep inside an asteroid, similar to the area deep inside Earth near the border between the core...solutions. a Botryoidal hematite with iridescent limonite coating, Parcocha Mine, Bilbao, Spain * 19 x 19...LEFT: Gold, Bralorne (Pioneer) Mine, Bridge River area, British Columbia, Canada * 7 x 6 x 1 cm 32. | | | Book | | a fracture, producing such forms as aegirine pegmatite. As well, hot hydrothermal fluids often carry...sediment sometimes form fossils. Orbicular granite, Finland * 99 x 74 x 31 cm. This uncommon type of intrusive...However, from deep inside an asteroid, similar to the area deep inside Earth if they are too big for the atmosphere...LEFT: Gold, Bralorne (Pioneer) Mine, Bridge River area, British Columbia, Canada * 7 x 6 x 1 cm 32. |...near Inverary, Strathclyde, Scotland; Outokumpu, Finland; Espedalen, near Lillehammer, Norway. Africa: |  | | Journal (volume) | | Geological Survey of Finland Bulletin 373 Early Proterozoic Karelian and Svec ofenn ian for ma tions...tutkimusk eskus Es poo 1l)l)3 Geological Survey of Finland, Bulletin 37~ E)\.RL Y PROTEROZOIC KARELIAN AND...RAAHE _. LADOGA ORE ZONE, BASED ON THE PIELAVESI AREA, CENTRAL FIl\TLAND by ELIAS EKDAHL with 137 pages... based on the Pielavesi area, central Finland. Geological Survey of Finland, Bulletin 373, 137 pages...Jatulian sedimentation. The sequence in the Pielavesi area can be considered to contain the type sequence of |  | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...oxidation zone of ore deposits, often associated with limonite, calcite, hemimorphite, smithsonite, azurite,...southwestern Transbaikalia, 1u1.d in the Lake Baikal area, USSR; at Pitigliano, Tuscany, Italy; and at the...intense blue-green MODE OF OCCURRENCE: Occurs in limonite voids in the oxidation zone of the Kamariza mining...pearly on cleavages. MODE OF OCCURRENCE: Found in an area along 8 AGRINIERITE the Kipawa River, Villedieu | | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...oxidation zone of ore deposits, often associated with limonite, calcite, hemimorphite, smithsonite, azurite,...southwestern Transbaikalia, and in the Lake Baikal area, USSR; at Pitigliano, Tuscany, Italy; and at the...intense blue-green MODE OF OCCURRENCE: Occurs in limonite voids in the oxidation zone of the Kamariza mining...pearly on cleavages. MODE OF OCCURRENCE: Found in an area along 8 AGRINIERITE the Kipawa River, Villedieu |  | | Book (chapter) | | replacement (austausch) of a component; e.g., limonite after pyrite or fluorite after calcite d. exchange...a pyrite crystal is altered on the surface to limonite. Some authorities quite rightly object to the...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 |  | | Book | | replacement (austausch) of a component; e.g., limonite after pyrite or fluorite after calcite d. exchange...a pyrite crystal is altered on the surface to limonite. Some authorities quite rightly object to the...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 |  | | 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...allowed to alter to lepidocrocite, goethite, or limonite would still be no different than a chemical spill...for quarry Q, mine M, prospect P, locality L, and area A. Example: Newry - Bell Pit, Crooker Q, Dunton |  | | 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 (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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