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Document Type |
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Project |
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Document Title |
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Economic potentialities of some skarn deposits rich in wollastonite and garnet, Kingdom of Saudi Arabia الإمكانات الاقتصادية لبعض رواسب اﻹسكارن الغنية بالولاستونيت والجارنت، المملكة العربية السعودية. |
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Subject |
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Economic potentialities of some skarn deposits rich in wollastonite and garnet, Kingdom of Saudi Arabia |
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Document Language |
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Arabic |
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Abstract |
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Skarn deposits are metamorphic ores that are developed at the expense of carbonate precursors that are impure in most cases. In Saudi Arabia, the Arabian Shield of Proterozoic age contains skarn deposits are recorded among a volcanosedimentary succession belonging to the so-called “Hulaiyfa Group” in some localities. They are mostly recorded in association with thick marble bands and blocks of variable sizes and dimensions. In its most typical occurrences, the skarn deposits are represented by a wide series of calc-silicate rocks being characterized by common variation in its silicate mineralogy. In the framework of the present project’s proposal, the investigators aim to shed more light on the economic potentialities of these skarns, especially their content of non-metallic ore minerals such as wollastonite and garnet. In this respect, it is planned to select some representative occurrences in three different localities within the shield in order to display the variations in mineralogy, metamorphic history and tectonic evolution, if present. The three proposed localities are Jabal Ash Shumt (along Madina-Qassiem road), south Al Laith and Makkah Al Mukaramah. For each locality, it is proposed to specify the field occurrence of each skarn deposit in relation to the surroundings, petrological and mineralogical classifications, in addition to envisaging their geochemical characteristics for possible ore anomalies. Finally, an attention to the gradation from primary carbonates, passing with marble, and the calc-silicate rocks as end-products will be paid aiming to reach a conclusive idea about origin of sedimentation (marine limestone, calcareous volcanic exhalative or both?), primary sedimentary structures and metamorphic textures as well. The assessment will also use the yielded gangue-ore relationships in recommending the most suitable method of ore evaluation and dressing. |
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Publishing Year |
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1428 AH
2007 AD |
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Added Date |
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Wednesday, July 14, 2010 |
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Researchers
| أسعد محمد مفتي | Moufti, Asaad Mohammed | Investigator | Doctorate | |
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