The application of geostatistics based model for the phosphate mineral resource estimation in a dry climate region, case of the Bled El Hadba phosphate deposit, NE Algeria

Paper Details

Research Paper 20/11/2022
Views (295) Download (27)
current_issue_feature_image
publication_file

The application of geostatistics based model for the phosphate mineral resource estimation in a dry climate region, case of the Bled El Hadba phosphate deposit, NE Algeria

Sabrina Souadnia, AmelMaou, Amel Boudries, Fahima Halimi
J. Bio. Env. Sci.21( 5), 154-160, November 2022.
Certificate: JBES 2022 [Generate Certificate]

Abstract

Since many decades, several researchers have been exploring the potential of geostatistics in mineral resource estimation, resulting in numerous works and publications. The Bled El Hadba phosphate deposit, of the Jebel Onk mining basin, NE Algeria is structured in a basal, a principal, and a summit sublayer. A total of 24 core holes were drilled with a mesh size of 400*300m. We analyzed the exploration data with a Principal Component Analysis (PCA). The results of the correlation circles of the loading factors on the chemical elements P2O5, CaO, mgO, SiO2, Fe2O3, CO2, and IR (Insoluble Residue) allowed us, the identification of three main associations: the first association is formed by P2O5 and CaO representing the phosphate material; the second association is that ofmgO and CO2 representing the dolomitic gangue; and the third association is made up of SiO2, Fe2O3 and IR representing the siliceous clay gangue. This study proves that the PCA model can accommodate drilling geological parameters and effectively approximate complex relationships among them. The variography of P2O5 contents allows the construction of a geostatistics model of the distribution of phosphate resources in each of these constituent sublayers. The geostatic simulation provided several possible variants, one of which could be the closest to reality. The latter would allow the most rigorous planning and control of the exploitation. Our approach could be applied in similar deposits with the same deposition conditions throughout the region.

VIEWS 41

Benzekri JP, Coll. 1980. L’analyse de données. Dunod, 2eme ed. Paris 2, 632p.

Boulemia S, Hadji R, Hamimed M. 2021. Depositional environment of phosphorites in a semiarid climate region, case of El Kouif area (Algerian–Tunisian border). Carbonates and Evaporites 36, 53. Doi.org/10.1007/s13146-021-00719-4

Cabello P, Falivene O, López Blanco M,  Howell J, Arbués P,  Ramos E. 2009. Modelling facies belt distribution in fan deltas coupling sequence stratigraphy and geostatistics. The Eocene Sant Llorenç del Munt example (Ebro foreland basin, NE Spain). Marine and Petroleum Geology DOI:10.1016/j.marpetgeo.2009.08.009

Cielensky S, Benchernine N. 1987. Travaux de prospection et d’évaluation des phosphates dans la région de Bir El Ater. Rapport interne, EREM, 80p.

Daniel Kh, Clayton V, Deutsch V. 2008. Solved Problems in Geostatistics resources , vol 15, no. 2, p. 119-127.

Deutsch CV. 2002. Geostatistical Reservoir Modeling, Oxford University Press 376p

E.RE.M. 1985-1987. Travaux de prospection et d’évaluation des phosphates dans de Bir El Ater. Rapport EREM, 2 tomes: géologie, 50p. Prospection d’évaluation, 53p

Goovaerts P. 1997. Geostatistics for Natural resources Evaluation, New York: Oxford University Press 483p.

Kechiched R. 2011. Typologie géochimique et géostatistique des minerais de phosphates du gisement de Bled El Hadba- Djebel On (Algérie Orientale) Mém. de magister. Université Badj Mokhtar. Annaba. 164 p.

Kedzierski P. 2007. Révisions de géostatistiques, Résumé publié sur internet 7p.

Lebart L, Morineau A, Fenelon JP. 1979. Traitements de données statistiques, méthodes et programmes. Edit. Dunod. Paris 510 p.

Leuangthong O, Jason A, mcLennan, Clayton V, Deutsch CV. 2004. Minimum Acceptance Criteria for Geostatistical Realizations (Citations: 9). Nonrenewable Resources , vol 13, no. 3, 131-141, 2004.

Matheron G. 1965. Les Variables Régionalise´es et leur Estimation. Masson, Paris 305p.

Matheron G. 1970. The Theory of Regionalized Variables and its Applications.Les Cahiers du Centre de Morphologie Mathématique, Vol. 5, Ecole des Mines de Paris, Fontainebleau 212p.

Mezghache H, Hani A. 2002. Typologie chimique des phosphates du gisement de Djemi-Djema, bassin de Djebel Onk (Algérie orientale). Géologie Méditerranéenne. Tome XXVII n° 1/2, 2000, pp 95-106.

Mezghache H, Toubal A, Bouima T. 2004. Typology of phosphate ores of the Djebel Onk Mining Basin (Eastern Algeria). Phosphorus Research Bulletin 15, 5-20. Online ISSN: 1882-2363, Print ISSN: 0918-4783.

Mezghache H. 1989. Cartographique automatique et interpretation geostatistique d’une campagne de prospection geochimique sur sol-application à la zone mercurille Nord Numidique (Algerie). Thèse de Doctorat-Nouvelle; CNRS-CRPG-INPL. Nancy – France 175 p.

Prian GP, Cortiel PH. 1993. Etude de développement du gisement de phosphate de Djebel Onk (Algérie). Rapport d’expertise géologique, B.R.G.M. France 288p.

Ranchin G. 1963. The sedimentary phosphates of lime in Djebel Onk’s region (Algeria), S.E.R.M. (Société d’Exploration et de Recherche Minière) Paris, France pp. 85.

Volle M. 1981. Analyse de données. Econo-mica, Paris 317 p.