Neutron activation analysis of celestite from the Findlay Arch district, NW Ohio, SE Michigan and SW Ontario

Conference · Fri Apr 01 00:00:00 EST 1994 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:7141160

Carlson, E H; McFarland, B P ^[1]; Talnagi, Jr, J W ^[2]

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1. Kent State Univ., OH (United States). Dept. of Geology
2. Ohio State Univ., Columbus, OH (United States). Nuclear Reactor Lab.

Neutron activation analysis of celestite that is present in the Findlay Arch district of northwestern Ohio, southeastern Michigan and southwestern ontario, has provided new geochemical data with important genetic implications. Celestite occurs chiefly as vug fillings in rocks of Middle Silurian to Middle Devonian age. Two generations of celestite (I-early, II-late), both with wide distributions, were recognized in the paragenetic sequence of the district. Minor and trace element contents were determined for 21 specimens of various color and habit from several rock units at 16 sites. Color (blue, colorless, white) and habit (tabular, prismatic) are independent of generation. Ranges of minor and trace elements that were detected (ppm) are as follows: Ba, 140--83,400; Co, < .005--.59; Fe, 4.0--55; La, < .01--1.1; Na, < 2--30; Sc, < .001--.01; and Zn, < .14--1.8. Variations of Ba content in celestite correlate closely with its paragenetic position, reinforcing their view that celestite I and II originated in different environments. Trends are not readily apparent in the data for Co, Fe, Na, Sc, and Zn. No correlation exists between color and concentrations of the elements detected.

• OSTI ID: 7141160
• Report Number(s): CONF-9404217-; CODEN: GAAPBC
• Journal Information: Geological Society of America, Abstracts with Programs; (United States), Vol. 26:5; Conference: 27. annual conference of the North-Central Section of the Geological Society of America (GSA), Kalamazoo, MI (United States), 28-29 Apr 1994; ISSN 0016-7592
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
GEOLOGIC DEPOSITS
GEOCHEMISTRY
MICHIGAN
OHIO
ONTARIO
STRONTIUM SULFATES
NEUTRON ACTIVATION ANALYSIS
CHEMICAL COMPOSITION
ACTIVATION ANALYSIS
ALKALINE EARTH METAL COMPOUNDS
CANADA
CHEMICAL ANALYSIS
CHEMISTRY
DEVELOPED COUNTRIES
NORTH AMERICA
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
SULFATES
SULFUR COMPOUNDS
USA
580000* - Geosciences