Fluid inclusion and stable isotope study of fault-related mineralization in Tyndrum area, Scotland

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Authors:Curtis, S. F.; Pattrick, R. A. D.; Jenkin, G. R. T.; Fallick, A. E.; Boyce, A. J.; Treagus, J. E.
Author Affiliations:Primary:
Leeds University, United Kingdom
Other:
University of St. Andrews, United Kingdom
University of Nottingham, United Kingdom
University of Glasgow, United Kingdom
University of Liverpool, United Kingdom
Volume Title:Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science
Source:Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science, Vol.102, p.B39-B47. Publisher: Institution of Mining and Metallurgy, London, United Kingdom. ISSN: 0371-7453
Publication Date:1993
Note:In English. 45 refs.; illus. incl. 3 tables, geol. sketch maps
Summary:Gold-bearing structures in this area formed from CO2-bearing fluids containing 6 eq.wt.% NaCl at 290-350 degrees C. Loss of CO2 (phase separation) from the fluids was one cause of mineral precipitation. Oxygen and H isotopic data suggest that the fluids were magmatic in origin but included an extra component: probably Lower Devonian meteoric water. Sulphur isotope ratios indicate two sources of S, one magmatic in character and the other the country rocks. In contrast, historically exploited base-metal veins in the area formed from highly saline (approx 15 eq.wt.% NaCl), relatively low T (140-200 degrees C) fluids with a different stable isotope signature from that of the Au veins. Comparison with data from other mineralization in the region suggests that the genesis of the Tyndrum Au veins is related to Caledonian magmatism; the mineralizing fluids could have evolved from an underlying magma that was either granitic or appinitic. [R.E.S.]
Subjects:Carbon dioxide; Copper ores; D/H; Devonian; Fault zones; Faults; Fluid inclusions; Gold ores; Hydrogen; Hydrothermal alteration; Inclusions; Intrusions; Iron ores; Isotope ratios; Isotopes; Lead-zinc deposits; Lower Devonian; Metal ores; Metasomatism; Mineral deposits, genesis; Mineralization; O-18/O-16; Ore-forming fluids; Oxygen; P-T conditions; Paleozoic; S-34/S-32; Stable isotopes; Stratiform deposits; Sulfides; Sulfur; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Hydrothermal processes; Tyndrum Scotland
Abstract Numbers:94M/575
Record ID:1993032053
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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040 |a ViAlAGI  |c ViAlAGI 
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072 7 |a 02D  |2 georeft 
100 1 |a Curtis, S. F.  |e analytic author  |u Leeds University, @GBR 
245 1 0 |a Fluid inclusion and stable isotope study of fault-related mineralization in Tyndrum area, Scotland 
300 |a p. B39-B47 
500 |a In English. 45 refs. 
500 |a Abstract number: 94M/575 
500 |a Abstractor: R.E.S. 
500 |a Affiliation: Leeds University; ; GBR; United Kingdom 
500 |a Affiliation: University of St. Andrews; ; GBR; United Kingdom 
500 |a Affiliation: University of Nottingham; ; GBR; United Kingdom 
500 |a Affiliation: University of Glasgow; ; GBR; United Kingdom 
500 |a Affiliation: University of Liverpool; ; GBR; United Kingdom 
500 |a Key title: Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science 
500 |a Source note: Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science, Vol.102, p.B39-B47. Publisher: Institution of Mining and Metallurgy, London, United Kingdom. ISSN: 0371-7453 
500 |a Publication type: journal article 
504 |b 45 refs. 
510 3 |a GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom 
520 |a Gold-bearing structures in this area formed from CO<2`-bearing fluids containing 6 eq.wt.% NaCl at 290-350 degrees C. Loss of CO<2` (phase separation) from the fluids was one cause of mineral precipitation. Oxygen and H isotopic data suggest that the fluids were magmatic in origin but included an extra component: probably Lower Devonian meteoric water. Sulphur isotope ratios indicate two sources of S, one magmatic in character and the other the country rocks. In contrast, historically exploited base-metal veins in the area formed from highly saline (approx 15 eq.wt.% NaCl), relatively low T (140-200 degrees C) fluids with a different stable isotope signature from that of the Au veins. Comparison with data from other mineralization in the region suggests that the genesis of the Tyndrum Au veins is related to Caledonian magmatism; the mineralizing fluids could have evolved from an underlying magma that was either granitic or appinitic. 
650 7 |a Carbon dioxide  |2 georeft 
650 7 |a Copper ores  |2 georeft 
650 7 |a D/H  |2 georeft 
650 7 |a Devonian  |2 georeft 
650 7 |a Fault zones  |2 georeft 
650 7 |a Faults  |2 georeft 
650 7 |a Fluid inclusions  |2 georeft 
650 7 |a Gold ores  |2 georeft 
650 7 |a Hydrogen  |2 georeft 
650 7 |a Hydrothermal alteration  |2 georeft 
650 7 |a Inclusions  |2 georeft 
650 7 |a Intrusions  |2 georeft 
650 7 |a Iron ores  |2 georeft 
650 7 |a Isotope ratios  |2 georeft 
650 7 |a Isotopes  |2 georeft 
650 7 |a Lead-zinc deposits  |2 georeft 
650 7 |a Lower Devonian  |2 georeft 
650 7 |a Metal ores  |2 georeft 
650 7 |a Metasomatism  |2 georeft 
650 7 |a Mineral deposits, genesis  |2 georeft 
650 7 |a Mineralization  |2 georeft 
650 7 |a O-18/O-16  |2 georeft 
650 7 |a Ore-forming fluids  |2 georeft 
650 7 |a Oxygen  |2 georeft 
650 7 |a P-T conditions  |2 georeft 
650 7 |a Paleozoic  |2 georeft 
650 7 |a S-34/S-32  |2 georeft 
650 7 |a Stable isotopes  |2 georeft 
650 7 |a Stratiform deposits  |2 georeft 
650 7 |a Sulfides  |2 georeft 
650 7 |a Sulfur  |2 georeft 
651 7 |a Europe  |2 georeft 
651 7 |a Great Britain  |2 georeft 
651 7 |a Scotland  |2 georeft 
651 7 |a United Kingdom  |2 georeft 
651 7 |a Western Europe  |2 georeft 
653 |a Hydrothermal processes 
653 |a Tyndrum Scotland 
700 1 |a Pattrick, R. A. D.,  |e analytic author 
700 1 |a Jenkin, G. R. T.,  |e analytic author 
700 1 |a Fallick, A. E.,  |e analytic author 
700 1 |a Boyce, A. J.,  |e analytic author 
700 1 |a Treagus, J. E.,  |e analytic author 
773 0 |t Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science  |d London : Institution of Mining and Metallurgy, Apr. 1993  |x 0371-7453  |y TIAEA7  |n Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science, Vol.102, p.B39-B47. Publisher: Institution of Mining and Metallurgy, London, United Kingdom. ISSN: 0371-7453 Publication type: journal article  |g Vol. 102  |h illus. incl. 3 tables, geol. sketch maps