| Title | Multiparameter geophysical logging at the Yava lead deposit: a statistical approach |
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| Author | Cinq-Mars, A; Mwenifumbo, C J; Killeen, P G; Chouteau, M |
| Source | Geophysical Prospecting vol. 40, no. 8, 1992 p. 829-848, https://doi.org/10.1111/j.1365-2478.1992.tb00555.x |
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| Year | 1992 |
| Alt Series | Geological Survey of Canada, Contribution Series 16692 |
| Publisher | Wiley-Blackwell |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Nova Scotia |
| Area | Yava Lead deposit |
| Subjects | metallic minerals; geophysics; general geology; statistical analyses; statistical methods; mineral exploration statistics; mineralization; sulphides; galena; clay minerals; lead; sphalerite |
| Illustrations | graphs; diagrams; histograms; plots |
| Program | Canada-Nova Scotia Mineral Development Agreement, 1984-1989 |
| Released | 1992 11 01 |
| Abstract | The present study describes multiparameter geophysical logging carried out at the Yava sandstone lead deposit, Nova Scotia, Canada. Statistical analysis of the multiparameter data set shows that the
spectral gamma-gamma ratio log (SGG ratio) is the most useful technique
for characterizing the disseminated sulphide mineralization. Principal component analysis (PCA) indicates that the apparent chargeability
(IP parameter) responds to the
presence of clay minerals in the sandstone in addition to disseminated sulphides, so that the induced polarization method (IP) does not accurately delineate the disseminated galena content as was originally assumed in the preliminary log
interpretation. PCA has also confirmed that the SGG ratio and density are related to lead content and that lithological variations can be delineated with natural radioactivity and resistivity. The zinc content of the deposit was poorly characterized
by geophysical logs. Sphalerite occurrences seem to be localized as narrow bands (< 1 cm) which were not geophysically detectable. |
| GEOSCAN ID | 204062 |
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