Morphology of diamonds from kimberlite pipes of the Catoca field, Angola |
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| Authors: | V N Zinchenko |
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| Institution: | (1) Catoca Mining Company, Catoca, Angola Republic |
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| Abstract: | The paper presents new data on the morphology of more than 3200 diamond crystals from kimberlite pipes of the Catoca field located in the Lunda diamond-bearing province of northeastern Angola. The diamond crystals from particular pipes of this field differ in their morphology and their physical and mineralogical properties. Octahedrons are predominant in the morphological spectrum of crystals from the Catoca and Kamitongo pipes, indicating more favorable conditions for diamond growth and preservation in comparison with diamonds from the Kakele pipe, where rhombic dodecahedrons are prevalent. In general, morphological and other mineralogical features of diamond crystals may be used in appraisal of the diamond-bearing potential of their primary sources in northeastern Angola. |
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