 | | Journal (article/letter/editorial) | | boundary between the Central Iberian Zone and the Galicia Trás-os-Montes subzone (Fig. 1), where different...mineralization were described at Carris and Las Sombras (20 km NNW of Borralha), and are assumed to be...at Bouzadrago (Galicia, Spain); (2) W-Sn, (Cu, Mo,Bi) at Las Sombras (Galicia, Spain), Carris and Borrageiro;...(4) W, (Cu,Mo,Bi) at Borralha. K-Ar dating of muscovite associated with molybdenite from the Venise breccia...chalcopyrite + sphalerite ± pyrite and secondary muscovite (Fig. 3d); and (5) Fe,Mg-chlorite with molybdenite |  | | Journal (article/letter/editorial) | | WESTERN SPAIN J MANGAS and A ARRIBAS Departamento de Geologia, Facultad de Ctenctas del Mar, Las Palmas...0009-2541/87/$03 50 subject from Spare are those on the Las Sombras ( Sider, 1979) and Golpejas (Mangas, 1981, Mangas...present, the largest producer of tin and tungsten m Spain These deposits belong to the following types (Arrlbas...association consists of quartz, alblte, K-feldspar, muscovite, cassiterlte, columblte-tantahte, tapiohte, apatlte...leucogramtes and/or twomica granites Apart from quartz, muscovite, apatite and tourmaline, the ore minerals are |  | | Journal (article/letter/editorial) | | CANALITA, NAVASFRÍAS Sn–W DISTRICT, SALAMANCA, SPAIN Teresa LLORENS§ and Maria Candelas MORO Department...Salamanca, Spain Abstract The La Canalita pegmatites in the Navasfrías Sn–W district, in Spain, are a group...lepidolite subtype, La Canalita, Navasfrías district, Spain. Sommaire Les pegmatites de La Canalita, du district...southwestern part of the province of Salamanca, in Spain, belongs to the tin–tungsten Variscan belt of Western...Rye 1979). In Spain, relevant examples are the Las Sombras mine (Sider 1979), San Finx mine (Mangas & Arribas |  | | Journal (article/letter/editorial) | | distingu6es des veines min$ralis$es du faisceau de Las S o m b r a s montrant en terrains points des accumulations...Pico de N e v o s a i / '~ f /,--. JSas Sombras I //i .1--.~.f...~AsA/has 2 F////il/il///s ...filons rnin6ralis6s en tungst~ne-6tain du secteur Las S o m b r a s - D o s Carris. La puissance des bandes...trSs r6guli6re Nord-Sud pour les 6pisy6nites de Las Sornbras-Dos Carris, Esi-Ouest pour les 6pisy6nites...lib6r6s lots de la chloritisation des biotites. La muscovite est affect~e par des d~forrnations plastiques: |  | | Journal (article/letter/editorial) | | jusqu'/t des granites alcalins /~ deux micas ou & muscovite seule. D'apr~s leurs caract6res p~trographiques...d'6tain dans certains faci6s de granite alcalin it muscovite). Cet enrichissement s'explique par la quantit6...min6ralisations ~t tungst6ne-6tain. L'6tude de la mine de Monteneme nous a conduit /~ poser le probl6me...stannowolframifhre de Monteneme. a. Position de la mine de Monteneme (MTM) darts la g4ologie r6gionale du...5: Principaux gisements A tungsthne ou 4tain; MTM mine de Monteneme, SC Santa-Comba (W Sn), SF San Finx |  | | Journal (article/letter/editorial) | | quartz; stability of albite, orthodase, microline, muscovite and accessory minerals—hematite, zircon, monazite)...successive replacements of biotite, chlorite and muscovite, K-feldspar, plagioclase by albite as irregular...alteration parageneses (a) replacement of feldspars by muscovite (magmatic or authigenic) (b) day minerals alteration:...Na Bokan Mountain (Si) K (-F.ki -Quartz -Muscovite H 1 1 1 1 + Phenglt« + Chlorlt«l Albitite + Albite...quartz (eubedral crystals or radial textures, muscovite, intermediate filling types may exist. M. CATHELINEAU |  | | Journal (article/letter/editorial) | | GAGNY 1983) p o u r l'aplo-pegmatite lit& de la mine W-Sn de Santa C o m b a (Galice, N W Espagne). Ce...ainsi que des cristaux plus petits de beryl et de muscovite. Le Iitage a &6 observ8 288 + 15 MA (F. Cottard...d'un gisement intragranitique ~ tungst~ne-&ain: la mine de Santa Comba, (NW Galice, Espagne). I1 s'agit...Lovios-Geres. Le modhle de mise en place de la mine de Las Sombras (Sn-W-MoBi), (Sud Galice, Espagne). - Th~se...woiframite, magma diff6renci6 de l'endogranite de la mine de Santa Comba (Galice, Espagne).-Bull. Soc. G4ol |  | | Book | | de Geologia Universidad de Oviedo 33005 Oviedo, Spain GARCIA ISBN-13 :978-3-642-83982-5 e-ISBN-13 :978-3-642-83980-1...Circum-Atlantic Paleozoic Orogens) in Sept. 1986 in Oviedo, Spain. 1. Geology, Stratigraphic-Precambrian-Congresses...Stratigraphic-Paleozoic-Congresses. 3. Geology-Spain-Congresses. 4. Geology-Portugal-Congresses. I. Dallmeyer...international conference in September 1986, in Oviedo, Spain. The conference focused on the geologic evolution...Geologia, Universidad de Oviedo, 33005 Oviedo, Spain eastern margin is covered by post-Hercynian and |
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