The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola

Gonçalves, Bruno; Melgarejo,; Alfonso, Pura; Amores,; Paniagua, Viviana; Neto, A.; Morais,; Camprubí,

doi:10.3390/min9100580

Cited by 11 publications

(9 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tantalite is enriched in rare alkalis, Sn, W, and contains Au, Ag, Pt, Ir, and In. Microlite contains relatively high Zr, Hf, and U, in the same way as that from the Giraúl field in Angola where late-generation tantalite is rich in Ta, Mn, Zr, and other elements [35].…”

Section: Tracers Of Rare-metal Mineralizationmentioning

confidence: 74%

See 1 more Smart Citation

Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan

et al. 2021

View full text Add to dashboard Cite

Replenishment of mineral resources, especially gold and rare metals, is critical for progress in the mining and metallurgical industry of Eastern Kazakhstan. To substantiate the scientific background for mineral exploration, we study microinclusions in minerals from gold and rare-metal fields, as well as trace-element patterns in ores and their hosts that may mark gold and rare-metal mineralization. The revealed compositions of gold-bearing sulfide ores and a number of typical minerals (magnetite, goethite, arsenopyrite, antimonite, gold and silver) and elements (Fe, Mn, Cu, Pb, Zn, As, and Sb) can serve as exploration guides. The analyzed samples contain rare micrometer lead (alamosite, kentrolite, melanotekite, cotunnite) and nickel (bunsenite, trevorite, gersdorffite) phases and accessory cassiterite, wolframite, scheelite, and microlite. The ores bear native gold (with Ag and Pt impurities) amenable to concentration by gravity and flotation methods. Multistage rare-metal pegmatite mineralization can be predicted from the presence of mineral assemblages including cleavelandite, muscovite, lepidolite, spodumene, pollucite, tantalite, microlite, etc. and such elements as Ta, Nb, Be, Li, Cs, and Sn. Pegmatite veins bear diverse Ta minerals (columbite, tantalite-columbite, manganotantalite, ixiolite, and microlite) that accumulated rare metals late during the evolution of the pegmatite magmatic system. The discovered mineralogical and geochemical criteria are useful for exploration purposes.

show abstract

Section: Tracers Of Rare-metal Mineralizationmentioning

confidence: 74%

“…The deposits of Eastern Kazakhstan formed in an alkaline granite-pegmatite system. The system gained trace elements (Ta, Nb, Be, Li, and Cs) mainly late during the process, as it is common for many such deposits [35]. The richest pegmatite veins show multistage mineralization and store diverse assemblages.…”

Section: Tracers Of Rare-metal Mineralizationmentioning

confidence: 99%

Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In addition, pegmatites are the source of high-quality industrial minerals feldspars, kaolinite, quartz, micas, and spodumene for ceramics or gemstones such as topaz, tourmaline, aquamarine, and spodumene [14]. The composition of the faience mass investigated which is consisting of the following components: pegmatite ceramic (90 g), bentonite clay (81 g), white clay (114 g) and chalk (15 g).…”

Section: Resultsmentioning

confidence: 99%

Investigation of Pegmatite Mineral Applicability from the Terek Ceramic Deposit in Kyrgyzstan for Production of Porcelain and Earthenware

Abdullaeva¹,

Murzubraimov²,

Altybaeva³

et al. 2021

JMMCE

View full text Add to dashboard Cite

This article is investigating analysis and chemical composition of ceramic pegmatite minerals obtained from the Terek deposit in Toktogul district of Kyrgyzstan. Several methods such as mineralogical studies, magnetic and gravitational enrichments, silicate and chemical analyses of ceramic pegmatite minerals, quartz-feldspathic concentrate and sludge removal have been performed for determination of pegmatite mineral applicability for production of porcelain and earthenware.

show abstract

“…New isotope dating gave similar Ar-Ar biotite, muscovite, and lepidolite ages of 291 to 286 Ma for the Kalba phase I granites and related mineralization [16,48]. The Kalba pegmatites contain indicator elements of Li, Rb, Cs, F, B, Ta, Be, and Sn, and a number of minerals typical of rare-metal pegmatitic mineralization, which make the Kalba ores similar to other pegmatite deposits worldwide [54][55][56]: albite, cleavelandite, muscovite, lepidolite, fluorapatite, spodumene, pollucite, color tourmaline, cassiterite, tantalite, microlite, etc.…”

Section: Kalba-narym Metallogenic Beltmentioning

confidence: 99%

Geological History of the Great Altai: Implications for Mineral Exploration

et al. 2022

View full text Add to dashboard Cite

The Great Altai region, located at the boundary of Russia, Mongolia, China, and Kazakhstan, belongs to the system of the Central Asian Orogenic Belt. It has undergone a long complex geological and metallogenic history. Extremely rich resources of base, precious, and rare metals (Fe, Cu, Pb, Zn, Ag, Au, Li, Cs, Ta, Nb, REE, etc.) maintain developed mining and metallurgical industry, especially in East Kazakhstan, which is the key metallogenic province. The East Kazakhstan province comprises the Rudny Altai, Kalba-Narym, West-Kalba, and Zharma-Saur metallogenic belts, each having its typical mineralization profiles and deposits. The reconstructed geodynamic and metallogenic history of the Great Altai province, along with the revealed relationships between tectonic settings and mineralization patterns, allowed us to formulate a number of geodynamic, structural, lithostratigraphic, magmatic, mineralogical, and geochemical criteria for exploration and appraisal of mineral potential in Eastern Kazakhstan. Geodynamic criteria are based on the origin of different mineralization types in certain geodynamic settings during the Late Paleozoic–Early Mesozoic orogenic cycle. Structural criteria mean that the location of base-metal deposits in Rudny Altai, gold deposits in the West Kalba belt, rare and base metals in the Kalba-Narym and Zharma-Saur zones is controlled by faults of different sizes. Lithostratigraphic criteria consist of the relation of orebodies with certain types of sedimentary or volcanic-sedimentary rocks. Magmatic criteria are due to the relation between mineralization types and igneous lithologies. Mineralogical and geochemical criteria include typical minerals and elements that can serve as tracers of mineralization. The joint use of all these criteria will open new avenues in prospecting and exploration at a more advanced level.

show abstract

The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola

Cited by 11 publications

References 78 publications

Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan

Mineralogical Tracers of Gold and Rare-Metal Mineralization in Eastern Kazakhstan

Investigation of Pegmatite Mineral Applicability from the Terek Ceramic Deposit in Kyrgyzstan for Production of Porcelain and Earthenware

Geological History of the Great Altai: Implications for Mineral Exploration

Contact Info

Product

Resources

About