منابع مشابه
THE OCCURRENCE AND ORIGIN OF ZABUYELITE (Li2CO3) IN SPODUMENE-HOSTED FLUID INCLUSIONS: IMPLICATIONS FOR THE INTERNAL EVOLUTION OF RARE-ELEMENT GRANITIC PEGMATITES
Solid – liquid – vapor fluid inclusions in spodumene in rare-element granitic pegmatites commonly contain one or more highbirefringence minerals. Optical examination and laser Raman spectroscopic analyses of over 500 crystal-rich fluid inclusions in spodumene from Bikita and Kamativi, Zimbabwe, and Bernic Lake (Tanco), Manitoba, indicate that the high-birefringence phase is zabuyelite (Li2CO3)....
متن کاملTWO ANDALUSITE PEGMATITES FROM RIVERSIDE COUNTY. CALIFORNIA RonBnr W. Wnnn, Uniaersity of California, Los Angeles, Col'ifornia. CoNrnNrs
Int roduct ion. . . Coahuila Mountain Area. Sketch of the Regional Geology. Geological Relations of the Pegmatites General Statement. . . . . Pegmatites of Group I Pegmatites of Group Il Mineralogy of the Pegmatites. Group I General Mineralogy. . . . Andalusite. . . . Other Minerals. Group II General Mineralogy. Evidence for Two Generations of Pegmatites Winchester Area. . . Sketch of the Regio...
متن کاملintroduction to the geology and mineralogy of pegmatites located south of mashhad (first report of li-bearing pegmatites from iran)
the granites south of mashhad are located in the north-east of iran and occur in the suture zone between the binalud and kopeh dagh areas. these s-type granites are peraluminous with an upper triassic age and include intersecting pegmatites. these pegmatites are homogenous and show simple mineralogical combinations which include k-feldspars (microcline and orthoclase), plagioclase, quartz, mica...
متن کاملMineral chemistry of tourmaline and comparison of its types in pegmatites of Zamanabad Area, Hamadan province
Zamanabad area is located in southern of Hamedan Province and belong to Sanandaj-Sirjan magmatic-metamorphic Zone. Lithologic units of this area comprising slate, phyllite, andalusite-garnet bearing schists, metamorphic complex including sillimanite bearing schists, hornfels, pegmatitic unit and recently alluviums. The most important of geological unit is Alvand granitoid pluton at age middle J...
متن کاملThe study of petrography and mineral chemistry in aplite-pegmatites from Simin valley (south of Hamedan)
Aplitic and pegmatitic dykes exposed in southeast of Hamedan in the Simin area. From the margin to the center of these dykes, two typical textural areas present that obviously indicate effect of crystallization progress: 1- In the marginal zone, fabrics consist of anisotropic textures of the outer zones, including fine-grained units, graphic intergrowths, and unidirectional solidification text...
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ژورنال
عنوان ژورنال: The Journal of the Geological Society of Japan
سال: 1970
ISSN: 0016-7630,1349-9963
DOI: 10.5575/geosoc.76.13