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Franco Pirajno
University of Western Australia
237Publications
49H-index
8,516Citations
Publications 241
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#1Xiao-Hua DengH-Index: 12
#2Jingbin WangH-Index: 4
Last.Lingli LongH-Index: 4
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Abstract The Chinese East Tianshan is the easternmost sector of the Tianshan Mountain Range in the Central Asian Orogenic Belt (CAOB), and accommodates several events of magmatism, crustal growth and mineralization. The Kalatag arc is unique in the East Tianshan due to its widespread Early Paleozoic volcanic rocks, which offers a special opportunity to study the Early Paleozoic Cu-dominant mineral systems in island arc setting. In this region nine deposits have been discovered in recent years. T...
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#1Hao-Cheng Yu (China University of Geosciences)H-Index: 1
#2Kun-Feng Qiu (China University of Geosciences)H-Index: 8
Last.Ming-qian Wu (U of W: University of Windsor)H-Index: 1
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Abstract The Tongren-Xiahe-Hezuo polymetallic district in the West Qinling orogen of central China has emerged as a promising new gold belt. However, significant debate exists as to whether the numerous Triassic intrusion-hosted lode gold deposits in the district represent intrusion-related or orogenic mineral systems. The Yidi’nan gold deposit is an example of a Triassic intrusion-hosted gold deposit endowed with an estimated resource of over 20 tonnes gold. The gold mineralization at Yidi’nan ...
3 CitationsSource
#1Lebing Fu (China University of Geosciences)H-Index: 8
#2Junhao Wei (China University of Geosciences)H-Index: 9
Last.Yao Chen (China University of Geosciences)
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Abstract Post-mineralisation exhumation is pivotal because of its strong effects on the preservation of ore deposit. The Jiguanzi quartz monzonite hosts the Anjiayingzi Au deposit at the centre of the Kalaqin Antiform (or Kalaqin metamorphic core complex) in the northern North China Block (NCB). We can link the exhumation of the deposit with regionally geodynamic events and evaluate its exploration implications using low-temperature thermochronology from the quartz monzonite host. Sericite 40Ar/...
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#1Kui-Feng YangH-Index: 19
#2FANHongrui (CAS: Chinese Academy of Sciences)H-Index: 26
Last.Xiao-Chun Li (CAS: Chinese Academy of Sciences)H-Index: 13
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#1Matthew S. DoddH-Index: 3
#2Dominic PapineauH-Index: 21
Last.Juha A. Karhu (UH: University of Helsinki)H-Index: 16
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The cycling of iron and organic matter (OM) is thought to have been a major biogeochemical cycle in the early ferruginous oceans which contributed to the deposition of banded iron formations (BIF). However, BIF are deficient in OM, which is postulated to be the result of near-complete oxidation of OM during iron reduction. We test this idea by documenting the prevalence of OM in clays within BIF and clays in shales associated with BIF. We find in shales >80% of OM occurs in clays, but <1% occurs...
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#1Hao Zou (CAS: Chinese Academy of Sciences)
#2Franco Pirajno (UWA: University of Western Australia)H-Index: 49
Last.Shao yi Wei (Ministry of Land and Resources of the People's Republic of China)
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#1Yuri A. Kalinin (NSU: Novosibirsk State University)H-Index: 1
#2Galina Palyanova (NSU: Novosibirsk State University)H-Index: 5
Last.Franco Pirajno (UWA: University of Western Australia)H-Index: 49
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Abstract Our study of the primary and supergene gold from the Suzdal and Raigorodok deposits in Kazakhstan confirms that during the formation of the regolith in both deposits, invisible and fine gold is released from the host sulfide minerals during their oxidation and destruction; and transported in the form of soluble thiosulfate complexes by near-surface solutions. Upon contact with a geochemical barrier, gold can be deposited as crystalline aggregates. In the deposition of this gold the role...
1 CitationsSource
#1Matthew S. Dodd (UCL: University College London)H-Index: 3
#2Dominic PapineauH-Index: 21
Last.Franco Pirajno (UWA: University of Western Australia)H-Index: 49
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Abstract Almost all evidence for the oldest traces of life on Earth rely on particles of graphitic carbon preserved in rocks of sedimentary protolith. Yet, the source of carbon in such ancient graphite is debated, as it could possibly be non-biological and/or non-indigenous in origin. Here we describe the co-occurrence of poorly crystalline and crystalline varieties of graphitic carbon with apatite in ten different and variably metamorphosed banded iron formations (BIF) ranging in age from 1,800...
1 CitationsSource
#1David L. HustonH-Index: 27
#2Franco PirajnoH-Index: 49
Last.Terrence P. MernaghH-Index: 24
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#1Franco PirajnoH-Index: 49
#2David L. HustonH-Index: 27
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