Economic geology : bulletin of the society of economic geologists, Vol. 106 N° 6. Economic geology and the bulletin of the society of economic geologists - Septembre/Octobre 2011
| Titre : | Economic geology : bulletin of the society of economic geologists, Vol. 106 N° 6. Economic geology and the bulletin of the society of economic geologists - Septembre/Octobre 2011 |
| Type de document : | Bulletin |
| Paru le : | 17/10/2011 |
Dépouillements
Article : texte imprimé
The five papers that follow describe diverse aspects of epithermal gold-silver deposits and genetically related hydrothermal systems in the Hauraki goldfield on the Coromandel peninsula of the North Island of New Zealand (Fig. 1). The Hauraki go[...]
Article : texte imprimé
Jeffrey L. Mauk, Auteur ;
Chris M. Hall, Auteur ;
John T. Chesley, Auteur
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The Hauraki goldfield in the Coromandel volcanic zone contains approximately 50 adularia-sericite epithermal Au-Ag deposits in a 200-km-long by 40-km-wide north-south-trending belt. These deposits have produced approximately 320,000 kg Au and 1.[...]
Article : texte imprimé
Mark P. Simpson, Auteur ;
Jeffrey L. Mauk, Auteur
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The Waitekauri area of the Hauraki goldfield, New Zealand, contains several adularia-sericite epithermal Au-Ag deposits and prospects. From west to east, the area contains the Sovereign, Jubilee, Scimitar, Scotia, Teutonic, and Jasper Creek depo[...]
Article : texte imprimé
K. Bernard Spörli, Auteur ;
Hugh Cargill, Auteur
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We describe the complex structure in the highest (now mined-out) levels of the world-class Martha Hill gold-silver deposit, Coromandel peninsula, which is hosted in late Miocene andesitic rocks. A northeast-striking block of rock 360 m long and [...]
Article : texte imprimé
Mathijs A. Booden, Auteur ;
Jeffrey L. Mauk, Auteur ;
Mark P. Simpson, Auteur
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Major element geochemical exploration for epithermal deposits can extend the range of traditional pathfinder elements to a 1- to 10-km scale, and with knowledge of protolith composition, mass changes associated with hydrothermal alteration can b[...]
Article : texte imprimé
Anne E. Morrell, Auteur ;
Corinne A. Locke, Auteur ;
John Cassidy, Auteur
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Aeromagnetic, airborne radiometric, and surface gravity data from the adularia-sericite epithermal province of the Hauraki goldfield have delineated distinct anomalies associated with pervasive hydrothermal alteration and gold-silver mineralizat[...]
Article : texte imprimé
David P. Moynihan, Auteur ;
David R. M. Pattison, Auteur
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The Bluebell Pb-Zn deposit is located on the east side of Kootenay Lake in southeastern British Columbia. It is a fracture-controlled replacement deposit hosted in Lower Cambrian marble of the Badshot and Mohican formations. The orebodies trend [...]
Article : texte imprimé
Antonio Arribas, Auteur ;
Isabel Arribas, Auteur ;
Grenville Draper, Auteur
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New 40Ar/39Ar ages for alunite from the Moore and Monte Negro deposits in the Pueblo Viejo district, as well as from a newly discovered alunite-bearing zone on Loma la Cuaba west of the known deposits, are reported here. The ages range from abou[...]
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