Uranium mineralization occurs adjacent to the unconformity between Paleoproterozoic granite and Meso- to Neoproterozoic cover sediments in Chitrial prospect of Cuddapah Basin in Indian shield. Hydrothermal activity in the granite is evident by the presence of hydrothermal veins and associated wallrock alteration in the unconformity zone (0–5 m below unconformity), shallow zone (5–100 m), and deep zone (100–120 m). Hydrothermal alteration of granite has produced chlorite in all depth, epidote in the deep zone, muscovite commonly in the shallow zone and illite predominantly in the unconformity zone. Pitchblende and coffinite are associated with sulphides and carbonaceous matter filling micro fractures and occurring along grain boundaries in the granite. Fluid inclusion study of quartz from hydrothermal veins reveals the presence of primary aqueous inclusions (biphase, monophase, polyphase) with a wide range of salinity from 0.2 to >23.2 wt.% (low–high). The fluid composition indicates that MgCl₂ is present in all depth zones, CaCl₂ in the deep zone and KCl–NaCl in the unconformity zone. T_h of aqueous biphase inclusions is in the range of 275.0–78.9°C. Available evidence suggests convective circulation of basinal brine between cover sediments and basement granite during which uranium was mobilized from granite and precipitated in the unconformity zone.

铀矿化发生在印度地盾Cuddapah盆地Chitrial远景区古元古代花岗岩与中新元古代盖层沉积物的不整合面附近。不整合带（不整合面下方0-5 m）、浅带（5-100 m）和深带（100-120 m）中存在热液脉和相关围岩蚀变，表明花岗岩中的热液活动明显。花岗岩的热液蚀变产生了所有深度的绿泥石，深带绿帘石，浅带常见白云母，不整合带以伊利石为主。沥青闪石和铜锌矿与填充微裂缝的硫化物和碳质物质有关，并沿花岗岩中的晶界出现。对热液脉石英的流体包裹体研究揭示了主要含水包裹体（双相、单相、多相）的存在，其盐度范围从 0.2 到 >23.2 wt.%（低-高）。流体成分表明 MgCl₂存在于所有深度区，CaCl _{2 存在}于深区，KCl-NaCl 存在于不整合区。Ť _ħ水性两相夹杂物是在275.0-78.9℃的范围内。现有证据表明，在盖层沉积物和基底花岗岩之间存在盆地盐水对流循环，在此期间铀从花岗岩中转移并沉淀在不整合区。