Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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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.
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