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Aguachile Beryllium-Bearing Fluorspar District, Coahuila, Mexico

1963; Geological Society of America; Volume: 74; Issue: 6 Linguagem: Inglês

10.1130/0016-7606(1963)74[735

1943-2674

William N. McAnulty, C. R. SEWELL, D Atkinson, J. M. RASBERRY,

Geological and Tectonic Studies in Latin America

Research Article| June 01, 1963 Aguachile Beryllium-Bearing Fluorspar District, Coahuila, Mexico W. N McANULTY; W. N McANULTY The Dow Chemical Company, Freeport, Texas Search for other works by this author on: GSW Google Scholar C. R SEWELL; C. R SEWELL The Dow Chemical Company, Freeport, Texas Search for other works by this author on: GSW Google Scholar D. R ATKINSON; D. R ATKINSON The Dow Chemical Company, Freeport, Texas Search for other works by this author on: GSW Google Scholar J. M RASBERRY J. M RASBERRY The Dow Chemical Company, Freeport, Texas Search for other works by this author on: GSW Google Scholar Author and Article Information W. N McANULTY The Dow Chemical Company, Freeport, Texas C. R SEWELL The Dow Chemical Company, Freeport, Texas D. R ATKINSON The Dow Chemical Company, Freeport, Texas J. M RASBERRY The Dow Chemical Company, Freeport, Texas Publisher: Geological Society of America Received: 20 Sep 1961 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1963, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1963) 74 (6): 735–743. https://doi.org/10.1130/0016-7606(1963)74[735:ABFDCM]2.0.CO;2 Article history Received: 20 Sep 1961 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation W. N McANULTY, C. R SEWELL, D. R ATKINSON, J. M RASBERRY; Aguachile Beryllium-Bearing Fluorspar District, Coahuila, Mexico. GSA Bulletin 1963;; 74 (6): 735–743. doi: https://doi.org/10.1130/0016-7606(1963)74[735:ABFDCM]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Reactions of fluorine- and beryllium-bearing hydrothermal fluids with Cretaceous limestone formations in brecciated zones near dikes of rhyolite porphyry, under conditions of low temperature and low pressure, produced sizeable fluorspar deposits, some of which are potential economic sources of beryllium in the Aguachile district, Coahuila, Mexico.Bertrandite (Be4OH2Si12O7) is intermingled with fluorite in the "lower" contact zone along a ringdike which encircles a subsidence basin (cauldron collapse) in the central part of Aguachile Mountain. Fluorspar deposits outside Aguachile Mountain contain 5 to 20 ppm beryllium in ionic (?) combination with fluorite.A pluglike mass of quartz microsyenite, younger than the rhyolite dikes, intrudes the floor of the subsidence basin; a few still younger small dikes and irregular-shaped bodies of analcite diabase are present elsewhere in the district.The hydrothermal fluids probably were late emanations from a parent magma which gave rise to one or more of the types of intrusive igneous rocks. Both the quartz microsyenite and the bertrandite probably came from the same parent magma. Bertrandite mineralization followed two generations of fluorite and appears to have been essentially contemporaneous with a third, weak generation of fluorite mineralization. The ionically combined beryllium probably accompanied the earlier, stronger fluoritization. Greater concentration of beryllium in deposits around Aguachile subsidence basin may be the result of more open connections with a deep-seated, beryllium-enriched alkalic magma. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.