Ferro-Hornblende, an Iron-Rich End Member from Simlipal Granite, Mayurbhanj District, Orissa
Abstract
The occurrence of an iron-rich end member of the ferro-hornblende division of calcic amphiboles is recorded for the first time. The mineral is found in the granite of Simlipal Complex and is associated with ferrohedenbergite around which it occurs as reaction rims and also as independent grains. The Mg/Fe2+Mg ratio of the two analysed samples are 0.017 and 0.027 compared to the earlier recorded values for the mineral which range from 0.20 to 0.49.Downloads
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DEER, W. A., HOWIE, R. A. and ZUSSMAN, J., (1963) Rock Forming Minerals. Vol. 2, Table 43.
DEKKER, A. G. C., (1978) Amphiboles and their host rocks in the high grade metamorphic Precambrian of Regaland/Vest-Agder, S. W. Norway. Geologica ultraiectina Medede. Van het Geologisch. Inst. der Rijksuniversiteit te Utrecht, No. 17.
IYENGAR, S. V. P., (1978) Hedenbergite and ferrohedenbergite in the Simlipal Granite-Granophyre, Mayurbhanj dist., Orissa State. Indian Mineral ., v. 19, no. 1, pp. 42-47.
IYENGAR, S. V. P. and ANAND ALWAR, (1965) The Dhanjori eugeosyncline and its bearing on the stratigraphy of the Singhbhum, Keonjhar and Mayurbhanj districts. Wadia Commemorative Vol. Mining, Geol. and Met. Inst. India. pp. 138-162.
IYENGAR, S. V. P. and BANERJEE, S., (1964) Magmatic phases associated with the Precambrian Tectonics of Mayurbhanj district. Orissa, India. XXII International Geol. Cong., pt. X, sec. 10, pp. 515-538.
LEAKE, B. E., (1978) Nomenclature of amphiboles (compiled by Leake for the Sub-Committee on Amphiboles,I.M.A.). Amer. Mineral., v. 63, pp. 1023-1052.