Abstract
We report here the successful synthesis of orthorhombic cubanite using microwave heating and characterization for its orthorhombic phase by powder X‐ray diffraction, Micro‐Raman, Thermal and high pressure electrical resistivity measurements. The unique physico‐chemical conditions prevent successful synthesis under laboratory conditions, however the mineral occurs in nature in its orthorhombic form. A distinct endothermic dip in Differential Thermal Analysis (DTA) at 280 °C is in agreement with the DTA data reported for natural cubanite. An irreversible first order phase transformation from orthorhombic to NiAs structure is seen at 4 GPa/200 °C. High pressure electrical resistivity and micro‐Raman spectroscopic measurements on the synthetic sample exhibit transformation to isocubanite.
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