Phosphate microminerals of the Indian Mountain area

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Authors:Gordon, Jennings B.; Hollabaugh, Curtis L.
Author Affiliations:Primary:
West Ga. Coll., Dep. Geol., Carrollton, GA, United States
Volume Title:Mineralogical Record
Source:The Mineralogical Record, 20(5), p.355-362. Publisher: Mineralogical Record, Inc., Tucson, AZ, United States. ISSN: 0026-4628
Publication Date:1989
Note:In English. 16 refs.; illus. incl. 1 table, geol. sketch map
Summary:The sedimentary iron formations in the Indian Mountain area of W Georgia and E Alabama have been an important source of excellent strengite, cacoxenite, kidwellite, dufrenite, rockbridgeite and beraunite specimens for more than 30 years. These species clearly postdate goethite and were formed by phosphatic waters reacting with the iron oxides. Botryoidal textures and rhythmic colour banding indicate that many of the phosphates may have formed by crystallization from a gel. The probable order of formation is rockbridgeite-dufrenite-strengite-kidwellite. Most of the best collecting sites lie on the fault contact between the Chilhowee group and the Shady dolomite. [G.W.R.]
Subjects:Crystals; Mineral inventory; Mineralogy; Minerals; Occurrence; Phosphates; Popular geology; Alabama; Cherokee County Alabama; Georgia; Polk County Georgia; United States; Indian Mountain; Microminerals
Coordinates:N330000 N340000 W0850000 W0860000
Abstract Numbers:90M/3732
Record ID:1990000693
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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