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Padhi, Ashok Kumar
- Framboidal – Colloform - Recrystallised Pyrite in the Granitoids of Wahkyn Area, West Khasi Hills, Meghalaya
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Authors
Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Central Region, Nagpur - 440 013, IN
2 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur - 302 033, IN
3 Atomic Minerals Directorate for Exploration and Research, Southern Region, Bangalore - 560 072, IN
1 Atomic Minerals Directorate for Exploration and Research, Central Region, Nagpur - 440 013, IN
2 Atomic Minerals Directorate for Exploration and Research, Western Region, Jaipur - 302 033, IN
3 Atomic Minerals Directorate for Exploration and Research, Southern Region, Bangalore - 560 072, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 5 (2009), Pagination: 591-596Abstract
Petrographic studies of Proterozoic pyriteferous granitoids forming basement for upper cretaceous Mahadek sediments from Wahkyn area reveal interesting textural peculiarities of Pyrite. These pyrites also reveal interesting structural peculiarities. The three textural pyrite varieties found in the granitoids are: framboidal, colloform and recrystallised which appear both as composite aggregate as well as independent units. Various textures and variation in reflectivity, microhardness and elemental distribution of the pyrites are described. Average Co/Ni ratio along with the textural manifestation of these pyrites attests their sedimentary origin.Keywords
Ore Mineralogy, Framboidal Pyrite, Radioactive Mineral, Wahkyn, Meghalaya.
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