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Singh, V. K.
- Controls of Tungsten Mineralization at Chhendapathar, District Bankura, West Bengal
Abstract Views :180 |
PDF Views:2
Authors
V. K. Singh
1,
O. P. Varma
1
Affiliations
1 Indian School of Mines, Dhanbad, IN
1 Indian School of Mines, Dhanbad, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 16, No 4 (1975), Pagination: 415-427Abstract
The paper, describes the structure and tectonic environments of the tungsten mineralization at Chhendapathar, India's largest tungsten mining district. The main structural configuration of the district developed as a result of early, cross and later fold movements during the Singhbhum Orogeny (2000-850 m.y.). The early folding generated axial plane schistosity, whereas cross fold movements produced asymmetrical folds, and the later folding gave rise to a broad zone of culmination, that was the site of an intrusion-the source of tungsten-bearing solutions, responsible for the ore deposits. Ore controlling structures like shear-slips, shear-fractures and fault-fractures were primarily formed during the period of cross folding. On mineralization, they developed into vein patterns trending: (i) N70°E, (ii) N50°w, (iii) N70°w, (iv) N50°E, and (v) N10°E. Post-ore faults have dislocated the veins, sometimes rotating their strike by about 25°.- Iron-Manganese Ratios in Wolframites as Geologic Thermometers
Abstract Views :184 |
PDF Views:2
Authors
V. K. Singh
1,
O. P. Varma
2
Affiliations
1 Central Mine Planning and Design Institute, Dhanbad, IN
2 Indian School of Mines, Dhanbad 826004, IN
1 Central Mine Planning and Design Institute, Dhanbad, IN
2 Indian School of Mines, Dhanbad 826004, IN