Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 89-95 |
| Number of pages | 7 |
| Journal | Applied Earth Science |
| Volume | 128 |
| Issue number | 3 |
| Early online date | 11 Mar 2019 |
| DOIs | |
| Publication status | Published - 2019 |
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Keywords
- chalcopyrite
- copper mineralisation
- gold
- Caledonides
- cold crush gases
- Britain
- Ireland
- Chalcopyrite
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences (miscellaneous)
Cite this
Methane in sulphides from gold-bearing deposits, Britain and Ireland. / Parnell, John (Corresponding Author); Spinks, Sam; Blamey, Nigel.
In: Applied Earth Science, Vol. 128, No. 3, 2019, p. 89-95.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Methane in sulphides from gold-bearing deposits, Britain and Ireland
AU - Parnell, John
AU - Spinks, Sam
AU - Blamey, Nigel
N1 - We are grateful to J. Armstrong and C. Rice for provision of samples. J. Johnston is thanked for skilled technical support.
PY - 2019
Y1 - 2019
N2 - The direct measurement of gases trapped in sulphide minerals shows that samples from gold-bearing deposits in Britain and Ireland are anomalously rich in methane. Chalcopyrite samples in deposits of Palaeozoic age sited in Neoproterozoic basement (Caledonides greenschist), Munster Basin (Variscides greenschist) and the Carboniferous cover (diagenetic) were compared using mass spectrometry of cold-crushed gases. All host sequences contain sources of organic matter. The content of non-aqueous gas is greater in both sets of greenschist-hosted deposits than in the diagenetic-hosted deposits. However, chalcopyrite accompanying gold in the Neoproterozoic is methane-rich, but in the low-gold Munster Basin it is methane-poor. These gas data from opaque minerals complement fluid inclusion data from gangue minerals, and add support to models for the involvement of organic species in orogenic gold mineralization.
AB - The direct measurement of gases trapped in sulphide minerals shows that samples from gold-bearing deposits in Britain and Ireland are anomalously rich in methane. Chalcopyrite samples in deposits of Palaeozoic age sited in Neoproterozoic basement (Caledonides greenschist), Munster Basin (Variscides greenschist) and the Carboniferous cover (diagenetic) were compared using mass spectrometry of cold-crushed gases. All host sequences contain sources of organic matter. The content of non-aqueous gas is greater in both sets of greenschist-hosted deposits than in the diagenetic-hosted deposits. However, chalcopyrite accompanying gold in the Neoproterozoic is methane-rich, but in the low-gold Munster Basin it is methane-poor. These gas data from opaque minerals complement fluid inclusion data from gangue minerals, and add support to models for the involvement of organic species in orogenic gold mineralization.
KW - chalcopyrite
KW - copper mineralisation
KW - gold
KW - Caledonides
KW - cold crush gases
KW - Britain
KW - Ireland
KW - Chalcopyrite
UR - http://www.mendeley.com/research/methane-sulphides-goldbearing-deposits-britain-ireland
UR - http://www.scopus.com/inward/record.url?scp=85070921907&partnerID=8YFLogxK
U2 - 10.1080/25726838.2019.1588517
DO - 10.1080/25726838.2019.1588517
M3 - Article
VL - 128
SP - 89
EP - 95
JO - Applied Earth Science
JF - Applied Earth Science
SN - 0371-7453
IS - 3
ER -