Authigenic fluorite in dolomitic rocks of the Floridan Aquifer

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doi: 10.1130/0091-7613(1985)13<390:AFIDRO>2.0.CO;2
Authors:Cook, Douglas J.; Randazzo, Anthony F.; Sprinkle, Craig L.
Author Affiliations:Primary:
Univ. Fla., Dep. Geol., Gainesville, FL, United States
U. S. Geol. Surv., United States
Volume Title:Geology (Boulder)
Source:Geology (Boulder), 13(6), p.390-391. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613
Publication Date:1985
Note:In English. 15 refs.; illus. incl. sketch map
Summary:Fluorite in Eocene carbonate mudstone of Florida is reported for the first time. Fluorite occurs within primary gypsum nodules at a depth of 235-240 m below the surface. Water chemistry indicates undersaturation for gypsum and fluorite, and their survival is attributed to a lack of groundwater circulation. Fluorite probably formed penecontemporaneously with gypsum in a sabkha environment from sea-water-concentrated brine. An additional source of fluoride may have been fluvial transport of salts weathered from Appalachian volcanic rocks. (Authors' abstract) [C.N.]
Subjects:Aquifers; Authigenesis; Authigenic minerals; Carbonate rocks; Carbonatization; Cenozoic; Clastic rocks; Crystal growth; Diagenesis; Dolomitization; Eocene; Fluorides; Fluorite; Ground water; Gypsum; Halides; Minerals; Mudstone; Paleogene; Precipitation; Salt-water intrusion; Sebkha environment; Sedimentary petrology; Sedimentary rocks; Sedimentation; Sulfates; Surveys; Terrestrial environment; Tertiary; Florida; Floridan Aquifer; Hernando County Florida; United States; Aripeka; Environment
Coordinates:N282500 N283000 W0822500 W0824000
Abstract Numbers:87M/1597
Record ID:1985060517
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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