FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1963525336> ?p ?o ?g. }

• W1963525336 endingPage "176" @default.
• W1963525336 startingPage "160" @default.
• W1963525336 abstract "Orogenic gold-bearing quartz veins in the middle Tertiary Bullendale Fault Zone, New Zealand were mined historically for coarse gold in a narrow zone (ca. 5 m thick). However, recent drilling has revealed a broad hydrothermal alteration zone extending into the host schist, in which disseminated sulphide and gold mineralisation has occurred. The evidence of alteration is first seen over 150 m across strike from the fault zone, and the best-developed alteration halo is about 50 m wide. The extent and intensity of alteration is strongly controlled by local structures that developed during regional Tertiary kink folding of the pervasively foliated and fissile metasedimentary schist host. The earliest structures are foliation-parallel microshears (micron to millimeter scale) formed during flexural-slip folding. Later, but related, structures are predominantly normal faults and associated shear zones that have formed extensional sites during the regional folding event. All these structures facilitated hydrothermal fluid penetration and rock alteration, with localised vein formation and brecciation. Where fluid has followed structures, metamorphic chlorite, phengite, and titanite have been altered to hydrothermal ankerite, rutile, and muscovite or kaolinite. Ankerite with Fe/(Fe + Mg) < 0.4 formed in host rocks with Fe/(Fe + Mg) of 0.6, and iron released by ankerite alteration possibly formed pyrite and arsenopyrite that host disseminated gold. Fault zones were extensively silicified and veined with quartz, albite, sulphides, and gold. Host rocks have wide compositional variations because of centimeter-scale metamorphic segregation. However, the alteration halo is characterised by elevated CO2 and S, as measured by loss-on-ignition (doubled to ca. 6 wt.%), elevated As (100–10,000 ppm), and weakly elevated Sb (up to 14 ppm). Strontium is elevated and Ba depleted in many altered rocks, so Sr/Ba ratio increases from < 1 (host rocks) to > 3 in the most altered and silicified rocks. Many altered and mineralised rocks have low Sr/Ba (< 0.5) as well. The subtle geochemical signature is not useful as a vector to ore because of the strong microstructural control on alteration. Likewise, there is no evidence for spatial mineralogical zonation across the alteration halo, although the most intense alteration is centred on the main fault zone, and intensity of alteration is controlled by microstructures at all scales. As documented in previous studies, hydrothermal alteration haloes enlarge the exploration target for some orogenic gold deposits, and may include disseminated gold, as in this Bullendale example." @default.
• W1963525336 created "2016-06-24" @default.
• W1963525336 creator A5020035733 @default.
• W1963525336 creator A5037421908 @default.
• W1963525336 creator A5046630450 @default.
• W1963525336 date "2007-06-01" @default.
• W1963525336 modified "2023-10-02" @default.
• W1963525336 title "Mineralogy, geochemistry, and structural controls of a disseminated gold-bearing alteration halo around the schist-hosted Bullendale orogenic gold deposit, New Zealand" @default.
• W1963525336 cites W1966513303 @default.
• W1963525336 cites W1966764996 @default.
• W1963525336 cites W1967687859 @default.
• W1963525336 cites W1974153048 @default.
• W1963525336 cites W1977794195 @default.
• W1963525336 cites W1977932502 @default.
• W1963525336 cites W1988702992 @default.
• W1963525336 cites W1988833071 @default.
• W1963525336 cites W1992185651 @default.
• W1963525336 cites W1993651860 @default.
• W1963525336 cites W1999975101 @default.
• W1963525336 cites W2004131413 @default.
• W1963525336 cites W2009123615 @default.
• W1963525336 cites W2009298451 @default.
• W1963525336 cites W2017032254 @default.
• W1963525336 cites W2025821781 @default.
• W1963525336 cites W2041685740 @default.
• W1963525336 cites W2061431558 @default.
• W1963525336 cites W2068553407 @default.
• W1963525336 cites W2080999233 @default.
• W1963525336 cites W2088673087 @default.
• W1963525336 cites W2111053933 @default.
• W1963525336 cites W2135101215 @default.
• W1963525336 cites W2145354120 @default.
• W1963525336 cites W4238080741 @default.
• W1963525336 doi "https://doi.org/10.1016/j.gexplo.2007.04.001" @default.
• W1963525336 hasPublicationYear "2007" @default.
• W1963525336 type Work @default.
• W1963525336 sameAs 1963525336 @default.
• W1963525336 citedByCount "24" @default.
• W1963525336 countsByYear W19635253362013 @default.
• W1963525336 countsByYear W19635253362014 @default.
• W1963525336 countsByYear W19635253362015 @default.
• W1963525336 countsByYear W19635253362018 @default.
• W1963525336 countsByYear W19635253362019 @default.
• W1963525336 countsByYear W19635253362020 @default.
• W1963525336 countsByYear W19635253362021 @default.
• W1963525336 countsByYear W19635253362022 @default.
• W1963525336 countsByYear W19635253362023 @default.
• W1963525336 crossrefType "journal-article" @default.
• W1963525336 hasAuthorship W1963525336A5020035733 @default.
• W1963525336 hasAuthorship W1963525336A5037421908 @default.
• W1963525336 hasAuthorship W1963525336A5046630450 @default.
• W1963525336 hasConcept C101139013 @default.
• W1963525336 hasConcept C127313418 @default.
• W1963525336 hasConcept C156622251 @default.
• W1963525336 hasConcept C165205528 @default.
• W1963525336 hasConcept C17409809 @default.
• W1963525336 hasConcept C178790620 @default.
• W1963525336 hasConcept C185592680 @default.
• W1963525336 hasConcept C197737763 @default.
• W1963525336 hasConcept C23295444 @default.
• W1963525336 hasConcept C26687426 @default.
• W1963525336 hasConcept C2776062231 @default.
• W1963525336 hasConcept C2777640183 @default.
• W1963525336 hasConcept C2778188036 @default.
• W1963525336 hasConcept C2778572594 @default.
• W1963525336 hasConcept C2779086746 @default.
• W1963525336 hasConcept C2780756512 @default.
• W1963525336 hasConcept C544778455 @default.
• W1963525336 hasConcept C77928131 @default.
• W1963525336 hasConceptScore W1963525336C101139013 @default.
• W1963525336 hasConceptScore W1963525336C127313418 @default.
• W1963525336 hasConceptScore W1963525336C156622251 @default.
• W1963525336 hasConceptScore W1963525336C165205528 @default.
• W1963525336 hasConceptScore W1963525336C17409809 @default.
• W1963525336 hasConceptScore W1963525336C178790620 @default.
• W1963525336 hasConceptScore W1963525336C185592680 @default.
• W1963525336 hasConceptScore W1963525336C197737763 @default.
• W1963525336 hasConceptScore W1963525336C23295444 @default.
• W1963525336 hasConceptScore W1963525336C26687426 @default.
• W1963525336 hasConceptScore W1963525336C2776062231 @default.
• W1963525336 hasConceptScore W1963525336C2777640183 @default.
• W1963525336 hasConceptScore W1963525336C2778188036 @default.
• W1963525336 hasConceptScore W1963525336C2778572594 @default.
• W1963525336 hasConceptScore W1963525336C2779086746 @default.
• W1963525336 hasConceptScore W1963525336C2780756512 @default.
• W1963525336 hasConceptScore W1963525336C544778455 @default.
• W1963525336 hasConceptScore W1963525336C77928131 @default.
• W1963525336 hasIssue "3" @default.
• W1963525336 hasLocation W19635253361 @default.
• W1963525336 hasOpenAccess W1963525336 @default.
• W1963525336 hasPrimaryLocation W19635253361 @default.
• W1963525336 hasRelatedWork W1963525336 @default.
• W1963525336 hasRelatedWork W1977932502 @default.
• W1963525336 hasRelatedWork W2017192190 @default.
• W1963525336 hasRelatedWork W2019946678 @default.
• W1963525336 hasRelatedWork W2182805125 @default.
• W1963525336 hasRelatedWork W2402808450 @default.
• W1963525336 hasRelatedWork W2485733600 @default.

• next