• Devendhar Theegala
• Sridhar.N
• S. Ravinder
• Thunga Balu
• J. Ratnakar, K. Rajendra Prasad

In this paper, we present the data on petrology and geochemistry of the granites situated around Mothkur Mandal in the Yadadri-Bhuvanagiri District of Telangana state. Granites of the study area are coarse-grained, leucocratic, and light-grey to greyish pink in colour. The rocks exhibit hypidiomorphic texture and are chiefly constituted by quartz (2-30% by volume), K-feldspar (5-80%), plagioclase (2-30%), biotite (2-5%), and hornblende (0-10%). The common accessory minerals in these rocks are zircon, apatite, sphene, magnetite and, the secondary minerals include kaolin (after K-feldspar) and chlorite (after biotite). Geochemically, the Mothkur granites are characterized by high SiO2, Al2O3, total alkalies, and low MgO, CaO, Fe2O3, TiO2, and P2O5. Further, they are enriched in LREE over HREE and also LILE relative to HFSE elements. On the chondrite-normalized REE diagram, the Mothkur exhibit steeply inclined patterns from LREE to HREE with a positive Eu anomaly, except a few with less prominent negative anomalies. On the primitive normalized spider diagrams, they display negative anomalies for Nb, Ta, and Ti. Significant enrichment of felsic elements over mafic elements suggests the role of crystal fractionation from the representative mafic parent magma. The LILE and LREE enrichment infer the metasomatic enrichment of their source magma before the crystallization of the granites. Tectonically, these rocks show affinity to the subduction environments.

Mothkur, Granite, Geochemistry, LREE , LILE Yadadri, Telangana

"Geochemistry of Granites from the Mothkur area, Yadadri-Bhuvanagiri District, Telangana, India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 4, page no.b536-b551, April-2022, Available :http://www.jetir.org/papers/JETIR2204171.pdf

"Geochemistry of Granites from the Mothkur area, Yadadri-Bhuvanagiri District, Telangana, India", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 4, page no. ppb536-b551, April-2022, Available at : http://www.jetir.org/papers/JETIR2204171.pdf