Bibliographische Detailangaben
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Personen und Körperschaften:
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Martin, K (VerfasserIn); Zagorevski, A (VerfasserIn); Mihalynuk, M G (VerfasserIn); Joyce, N L (VerfasserIn); Creaser, R (VerfasserIn) |
| Format: |
Zeitschrift
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| Sprache: |
English
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| veröffentlicht: |
British Columbia Ministry of Energy and Mines, 2016 |
| Gesamtaufnahme: |
GEM2: Geo-mapping for Energy and Minerals
, British Columbia Ministry of Energy, Mines and Petroleum Resources, Paper 2016-1, 2016 p. 77-94, Earth Sciences Sector, Contribution Series
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| Schlagwörter: |
Igneous Rocks;
Plutonic Rocks;
Plutons;
Polymetallic Ores;
Mineralization;
Silver;
Bismuth;
Copper;
Molybdenum;
Lead;
Zinc;
Porphyry Deposits;
Porphyries;
British Columbia;
Iskut River;
Surprise Mountain;
Zeitschrift;
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| Quelle: |
GEOSCAN
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| Zusammenfassung: |
Polymetallic mineralized quartz veins are hosted by quartz diorite to quart...
Polymetallic mineralized quartz veins are hosted by quartz diorite to quartz monzodiorite near Surprise Mountain, western Iskut River area. The intrusion is a homogeneous calc-alkaline, magnetite series granitoid that crosscuts an Early Jurassic thrust. New 40Ar/39Ar hornblende ages (178±2 and 179±2 Ma) from quartz diorite and a Re-Os molybdenite (180.2±0.8 Ma) age from a mineralized quartz vein provide minimums for the time of pluton emplacement. Both age and composition suggest affiliation with the Cone Mountain plutonic suite. Polymetallic quartz veins contain pyrite, galena, and molybdenite; minor bismuthinite, covellite, chalcocite, chalcopyrite and pyrrhotite; and traces of sphalerite. Geochemical analysis of veins reveals elevated Ag, Bi, Cu, Mo, Pb and Zn. Overall, the sporadic mineralization lacks clear horizontal metal zonation but may be related to polymetallic Ag-Pb-Zn±Au or Cu±Ag quartz deposit type, or may be peripheral to skarn or porphyry mineralization. Weak alteration, erratic and weak Au enrichment, and lack of metal zonation differentiates this occurrence from other Jurassic deposits in the area.
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