Pb-Isotopic Study of Galena by LA-Q-ICP-MS: Testing a New Methodology with Applications to Base-Metal Sulphide Deposits
Abstract
:1. Introduction
2. Summary of the Bathurst Mining Camp Geology and Sampling
3. Methodology
3.1. LA-Q-ICP-MS Instrumentation
3.2. Ablation Condition
4. Standardization
5. Results
6. Discussion
6.1. Limits of Precision and Accuracy
6.2. Exploration Implications
7. Conclusions
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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No. | Deposit | Drill Hole | 206Pb/204Pb | 2σ | 207Pb/204Pb | 2σ | 208P/204Pb | 2σ | 207Pb/206Pb | 2σ | 206Pb/208Pb | 2σ |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Ablation condition: 23 µm, 3 Hz, 1 J·cm−2, 25 s ablation duration | ||||||||||||
n = 20 | Caribou | 62-55-115 | 18.294 | 0.044 | 15.738 | 0.044 | 38.270 | 0.100 | 0.8593 | 0.0022 | 0.4783 | 0.001 |
n = 19 | Key Anacon East zone | 94-DL-32 | 18.243 | 0.040 | 15.725 | 0.043 | 38.320 | 0.120 | 0.8623 | 0.0020 | 0.4769 | 0.001 |
n = 20 | Brunswick No. 6 | B-259 | 18.155 | 0.038 | 15.628 | 0.043 | 38.060 | 0.110 | 0.8627 | 0.0020 | 0.4762 | 0.001 |
n = 20 | Restigouche | CP39-123 | 18.181 | 0.037 | 15.680 | 0.037 | 38.090 | 0.100 | 0.8621 | 0.0021 | 0.4771 | 0.001 |
n = 20 | Halfmile Lake Deep zone | HN-119 | 18.157 | 0.044 | 15.568 | 0.045 | 38.070 | 0.110 | 0.8614 | 0.0023 | 0.4765 | 0.001 |
Ablation condition: 44 µm, 2 Hz, 0.35 J·cm−2, 40 s ablation duration | ||||||||||||
n = 18 | Caribou | 62-55-115 | 18.193 | 0.038 | 15.663 | 0.033 | 38.120 | 0.100 | 0.8572 | 0.0015 | 0.4787 | 0.001 |
n = 20 | Key Anacon East zone | 94-DL-32 | 18.156 | 0.026 | 15.595 | 0.030 | 38.082 | 0.097 | 0.8599 | 0.0015 | 0.4773 | 0.001 |
n = 20 | Brunswick No. 6 | B-259 | 18.123 | 0.031 | 15.668 | 0.033 | 38.000 | 0.100 | 0.8605 | 0.0016 | 0.4793 | 0.001 |
n = 19 | Restigouche | CP39-123 | 18.320 | 0.030 | 15.697 | 0.033 | 38.140 | 0.100 | 0.8586 | 0.0015 | 0.4784 | 0.001 |
n = 9 | Halfmile Lake Deep zone | HN-99-119 | 18.170 | 0.042 | 15.611 | 0.048 | 38.000 | 0.140 | 0.8594 | 0.0023 | 0.4794 | 0.002 |
Ablation condition: 60 µm, 2 Hz, 0.35 J·cm−2, 60 s ablation duration | ||||||||||||
n = 23 | Caribou | 62-55-115 | 18.264 | 0.018 | 15.637 | 0.021 | 38.170 | 0.068 | 0.8563 | 0.0010 | 0.4782 | 0.001 |
n = 20 | Caribou | 62-55-115 | 18.267 | 0.019 | 15.645 | 0.016 | 38.157 | 0.046 | 0.8566 | 0.00063 | 0.4783 | 0.001 |
n = 20 | Key Anacon East zone | 94-DL-32 | 18.190 | 0.016 | 15.634 | 0.015 | 38.130 | 0.059 | 0.8589 | 0.00073 | 0.4765 | 0.001 |
n = 20 | Brunswick No. 6 | B-259 | 18.203 | 0.017 | 15.653 | 0.016 | 38.070 | 0.047 | 0.8603 | 0.00062 | 0.4781 | 0.001 |
n = 20 | Restigouche | CP39-123 | 18.247 | 0.017 | 15.673 | 0.016 | 38.185 | 0.047 | 0.8586 | 0.00065 | 0.4786 | 0.001 |
n = 20 | Halfmile Lake Deep zone | HN-119 | 18.203 | 0.017 | 15.661 | 0.017 | 38.135 | 0.048 | 0.8606 | 0.00063 | 0.4763 | 0.001 |
Reference values [34,35] | ||||||||||||
Brunswick No. 12 | 18.187 | 0.018 | 15.649 | 0.016 | 38.10 | 0.04 | ||||||
Austin Brook | 18.247 | 0.018 | 15.658 | 0.016 | 38.14 | 0.04 | ||||||
Heath Steele A1 | 18.199 | 0.018 | 15.652 | 0.016 | 38.12 | 0.04 | ||||||
Stratmat | 18.207 | 0.018 | 15.641 | 0.016 | 38.12 | 0.04 | ||||||
Wedge | 18.275 | 0.018 | 15.662 | 0.016 | 38.20 | 0.04 | ||||||
Armstrong A | 18.287 | 0.018 | 15.655 | 0.016 | 38.17 | 0.04 | ||||||
Rocky Turn | 18.319 | 0.018 | 15.668 | 0.016 | 38.27 | 0.04 | ||||||
Orvan Brook | 18.305 | 0.018 | 15.653 | 0.016 | 38.20 | 0.04 | ||||||
Murry Brook | 18.309 | 0.018 | 15.669 | 0.016 | 38.22 | 0.04 | ||||||
Chester | 18.302 | 0.018 | 15.659 | 0.016 | 38.22 | 0.04 | ||||||
Strachans Lake BK. | 18.223 | 0.018 | 15.649 | 0.016 | 38.19 | 0.04 | ||||||
Canoe Landing Lake | 18.243 | 0.018 | 15.653 | 0.016 | 38.19 | 0.04 | ||||||
Willett Showing | 18.295 | 0.018 | 15.651 | 0.016 | 38.19 | 0.04 | ||||||
Armstrong B | 18.298 | 0.018 | 15.660 | 0.016 | 38.23 | 0.04 | ||||||
Portage Lakes | 18.230 | 0.018 | 15.647 | 0.016 | 38.14 | 0.04 | ||||||
Captain | 18.279 | 0.018 | 15.657 | 0.016 | 38.16 | 0.04 | ||||||
Brunswick No. 6 | 18.277 | 0.018 | 15.663 | 0.016 | 38.22 | 0.04 | ||||||
Key Anacon | 18.247 | 0.018 | 15.658 | 0.016 | 38.14 | 0.04 | ||||||
Caribou | 18.276 | 0.018 | 15.654 | 0.016 | 38.19 | 0.04 | ||||||
Halfmile Lake | 18.217 | 0.018 | 15.659 | 0.016 | 38.15 | 0.04 | ||||||
Restigouche | 18.241 | 0.018 | 15.648 | 0.016 | 38.16 | 0.04 | ||||||
Reference values [36] | ||||||||||||
Wedge | 18.281 | 0.007 | 15.725 | 0.01 | 38.159 | 0.01 | ||||||
Heath Steele | 18.229 | 0.007 | 15.658 | 0.01 | 38.13 | 0.01 | ||||||
Brunswick 12 | 18.237 | 0.007 | 15.671 | 0.01 | 38.203 | 0.01 | ||||||
Restigouche | 18.257 | 0.007 | 15.7 | 0.01 | 38.197 | 0.01 |
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McFarlane, C.R.M.; Soltani Dehnavi, A.; Lentz, D.R. Pb-Isotopic Study of Galena by LA-Q-ICP-MS: Testing a New Methodology with Applications to Base-Metal Sulphide Deposits. Minerals 2016, 6, 96. https://doi.org/10.3390/min6030096
McFarlane CRM, Soltani Dehnavi A, Lentz DR. Pb-Isotopic Study of Galena by LA-Q-ICP-MS: Testing a New Methodology with Applications to Base-Metal Sulphide Deposits. Minerals. 2016; 6(3):96. https://doi.org/10.3390/min6030096
Chicago/Turabian StyleMcFarlane, Christopher R. M., Azam Soltani Dehnavi, and David R. Lentz. 2016. "Pb-Isotopic Study of Galena by LA-Q-ICP-MS: Testing a New Methodology with Applications to Base-Metal Sulphide Deposits" Minerals 6, no. 3: 96. https://doi.org/10.3390/min6030096