Zircon U–Pb and biotite 40Ar/39Ar geochronology from the Anzan emerald deposit in Zambia

Ren, Junping; Wang, Jie; Libo, Zuo; Liu, Xiaoyang; Dai, Chaocheng; Xu, Ke; Li, Guozhan; Geng, Jianghui; Xiao, Zhibin; Sun, Kai; Fuqing, HE; Gu, Alei

doi:10.1016/j.oregeorev.2017.08.034

Cited by 6 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Karoo Graben (IV), distributed along the Luano and Luangwa in the middle of the Irumide Belt, is a zone of Mesozoic–Cenozoic sedimentary rocks and Quaternary alluvial gravel horizons. The Lufilian Arc Belt (V) extends from the Zambian Copperbelt to the Congolese Copperbelt in the Katanga Province of the Democratic Republic of Congo, and is a zone of Neoproterozoic sedimentary rocks of Katanga Supergroup (Rainaud et al, 2005; Ren et al, 2013, 2017; Sun, Wang, Ren, Tang, et al, 2019). This tectonic zone is famous for its copper and cobalt resources, but it is also one of the main producing areas of emerald in Zambia.…”

Section: Regional Settingmentioning

confidence: 99%

Enrichment characteristics and metallogenic significance of rare elements in Zambia: Based on 1:1,000,000 geochemical mapping

Sun,

Ren,

Wang

et al. 2023

Geological Journal

Self Cite

View full text Add to dashboard Cite

The Sino–Zambian Cooperation Project has filled the gap in Zambia national‐scale geochemical mapping, providing basic geochemical guarantees for Zambia's basic geology, mineral development, environmental protection, agricultural production and other aspects. This article aims to reveal the distribution characteristics of its rare elements (Li, Be, Nb, Rb, Sr). The median value of Li, Be, Nb, Rb and Sr is 4.94 × 10−6, 0.65 × 10−6, 7.50 × 10−6, 33.00 × 10−6 and 21.90 × 10−6, respectively. The median and average values of the Irumide Belt, Zambezi Belt, Choma‐Kalomo Block and Hook Granite Complex are higher than other tectonic belts, showing that rare elements are enriched in those areas. The distribution of element anomaly areas is mainly related to the distribution characteristics of granite type rare metal mineralization occurrences, and a small number of anomaly areas are controlled by salt lake brine‐type mineralization occurrences. A total of five rare metal geochemical anomalies have been delineated respectively based on the 85% cumulative percentage of rare elements (Li, Be, Nb, Rb, Sr). The metallogenic prospective area delineated based on the comprehensive anomaly area of rare elements will provide an important reference for searching for rare metal deposits in this area.

show abstract

Section: Regional Settingmentioning

confidence: 99%

Enrichment characteristics and metallogenic significance of rare elements in Zambia: Based on 1:1,000,000 geochemical mapping

Sun,

Ren,

Wang

et al. 2023

Geological Journal

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, experts have collected emeralds from the Zambian Kafubu area for spectroscopy study and analysis of chemical composition [3,13], and they have compared emeralds from this area with emeralds of other origins [14][15][16][17][18][19]. Actually, there are four mechanized mining deposits in the Zambian Kafubu emerald area-Kagem, Grizzly, Chantete, and Kamakanga.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopy and Trace-Element Characteristics of Emeralds from Kamakanga, Zambia

Zhang,

2023

Crystals

View full text Add to dashboard Cite

Currently, Zambia is the second largest source of emeralds, after Colombia. In this study, emerald samples from the Zambian Kamakanga deposit were examined by UV-Vis-NIR, Miro-FTIR, Diamond ViewTM, and LA-ICP-MS. Representative UV-Vis-NIR spectra showed a distinct Fe3+ absorption peak, and the Fe-related absorption band was much stronger than that of the Cr-related absorption band. The infrared spectra showed that the absorption of type II H2O was much stronger than that of type I H2O. The results of LA-ICP-MS indicated that darker green, green, lighter green, and bluish-green emeralds had a clear separation of Cr/V (Cr/V > 15 for darker green, 10 < Cr/V < 15 for green, and Cr/V < 10 for lighter green and bluish green). In color zoning emerald, the contents of Cr, Sc, V, and Fe gradually increased with the intensity of the green color, while the opposite occurred for Cs. Cr is the main chromogenic element in Kamakanga emeralds. Additionally, Zambian Kamakanga emeralds contain high contents of total alkali metals (avg. 17,592 ppmw), Cs (avg. 1331 ppmw), Fe (avg. 8556 ppmw), Li (avg. 485 ppmw), Li + Cs (avg. 1816 ppmw), and Ga/Fe < 0.0025. Therefore, combined Fe versus Ga, Li versus Cs binary diagrams and K, Rb, and the Li + Cs ternary plot can distinguish Zambian emeralds from other important emerald origins.

show abstract

Enrichment characteristics of Cu and Co displayed by low-density geochemical mapping in Zambia

Ren

Wang

Libo

et al. 2020

Journal of Geochemical Exploration

View full text Add to dashboard Cite

Zircon U–Pb and biotite 40Ar/39Ar geochronology from the Anzan emerald deposit in Zambia

Cited by 6 publications

References 14 publications

Enrichment characteristics and metallogenic significance of rare elements in Zambia: Based on 1:1,000,000 geochemical mapping

Enrichment characteristics and metallogenic significance of rare elements in Zambia: Based on 1:1,000,000 geochemical mapping

Spectroscopy and Trace-Element Characteristics of Emeralds from Kamakanga, Zambia

Enrichment characteristics of Cu and Co displayed by low-density geochemical mapping in Zambia

Contact Info

Product

Resources

About