Petro-mineralogical Studies of the Paleoproterozoic Phosphorites in the Sonrai basin, Lalitpur District, Uttar Pradesh, India

Verfasser / Beitragende:
[Shamim Dar, K. Khan, Saif Khan, Samsuddin Khan, M. Masroor Alam]
Ort, Verlag, Jahr:
2015
Enthalten in:
Natural Resources Research, 24/3(2015-09-01), 339-348
Format:
Artikel (online)
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024 7 0 |a 10.1007/s11053-014-9260-x  |2 doi 
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245 0 0 |a Petro-mineralogical Studies of the Paleoproterozoic Phosphorites in the Sonrai basin, Lalitpur District, Uttar Pradesh, India  |h [Elektronische Daten]  |c [Shamim Dar, K. Khan, Saif Khan, Samsuddin Khan, M. Masroor Alam] 
520 3 |a The Paleoproterozoic phosphorites constitute an economically significant component of the Sonrai basin of Lalitpur district. These are associated with ferruginous shale, ironstone, limestone and quartz breccia. Petro-mineralogical studies of samples of the phosphorites, using X-ray diffractometry and scanning electron microscopy, reveal that the collophane (carbonate-fluorapatite) is the dominant phosphate mineral. Calcite, dolomite, quartz, mica and haematite are the dominant gangue constituents. The phosphate minerals occur as oolites mutually replaced by carbonate and silica. The presence of iron oxides has been found in most of the thin sections. There is meagre evidence of organic matter in the form of filaments of microbial phosphate laminae in the samples of phosphorite. The mineral assemblages, their texture and various forms in these phosphorites may be due to some environmental vicissitudes followed by replacement processes and biogenic activities. 
540 |a International Association for Mathematical Geosciences, 2014 
690 7 |a Petro-mineralogy  |2 nationallicence 
690 7 |a Paleoproterozoic  |2 nationallicence 
690 7 |a Sonrai basin  |2 nationallicence 
690 7 |a Phosphorite  |2 nationallicence 
690 7 |a Carbonate-fluorapatite  |2 nationallicence 
700 1 |a Dar  |D Shamim  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
700 1 |a Khan  |D K.  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
700 1 |a Khan  |D Saif  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
700 1 |a Khan  |D Samsuddin  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
700 1 |a Masroor Alam  |D M.  |u Geology Section Department of Civil Engineering, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
773 0 |t Natural Resources Research  |d Springer US; http://www.springer-ny.com  |g 24/3(2015-09-01), 339-348  |x 1520-7439  |q 24:3<339  |1 2015  |2 24  |o 11053 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Dar  |D Shamim  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Khan  |D K.  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Khan  |D Saif  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Khan  |D Samsuddin  |u Department of Geology, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Masroor Alam  |D M.  |u Geology Section Department of Civil Engineering, Aligarh Muslim University, 202002, Aligarh, Uttar Pradesh, India  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Natural Resources Research  |d Springer US; http://www.springer-ny.com  |g 24/3(2015-09-01), 339-348  |x 1520-7439  |q 24:3<339  |1 2015  |2 24  |o 11053