FDI in mining activities has been largely liberalised, except for mining and mineral separation of titanium bearing minerals and ores, its value addition and integrated activities, which 100% foreign ownership is permitted, but requires the prior approval of the government. In addition, FDI in the separation of titanium bearing minerals & ores are subject to addditional conditions, such as technolog transfer and investment in the establishment of value addition facilities in India.
"CHAPTER 3: GENERAL CONDITIONS ON FDI [...]
3.4   ENTRY ROUTES FOR INVESTMENT 3.4.1 Investments can be made by non-residents in the equity shares/fully, compulsorily and mandatorily convertible debentures/fully, compulsorily and mandatorily convertible preference shares of an Indian company, through the Automatic Route or the Government Route. Under the Automatic Route, the non-resident investor or the Indian company does not require any approval from Government of India for the investment. Under the Government Route, prior approval of the Government of India is required. Proposals for foreign investment under Government Route, are considered by respective Administrative Ministry/Department. 
[...]
3.5   CAPS ON INVESTMENTS
3.5.1 Investments can be made by person resident outside India in the capital of a resident entity only to the extent of the percentage of the total capital as specified in the FDI policy. The caps in various sector(s) are detailed in Chapter 5 of this Circular. 
3.6   ENTRY CONDITIONS ON INVESTMENT
3.6.1 Investments by non-residents can be permitted in the capital of a resident entity in certain sectors/activity with entry conditions. Such conditions may include norms for minimum capitalization, lock-in period, etc. The entry conditions in various sectors/activities are detailed in Chapter 5 of this Circular.
[...]
5.2 PERMITTED SECTORS
a) In the following sectors/activities, FDI up to the limit indicated against each sector/activity is allowed, subject to applicable laws/regulations; security and other conditionalities. In sectors/activities not listed below, FDI is permitted up to100% on the automatic route, subject to applicable laws/regulations; security and other conditionalities. [...]
c) Foreign investment in sectors under Government approval route resulting in transfer of ownership and/or control of Indian entities from resident Indian citizens to nonresident entities will be subject to Government approval. Foreign investment in sectors under automatic route but with conditionalities, resulting in transfer of ownership and/or control of Indian entities from resident Indian citizens to non-resident entities, will be subject to compliance of such conditionalities. 
[...]
5.2.3 MINING 
Sector/Activity | % of Equity/ FDI Cap | Entry Route [...]
5.2.3.1  Mining and Exploration of metal and non-metal ores including diamond, gold, silver and precious ores but excluding titanium bearing minerals and its ores; subject to the Mines and Minerals (Development & Regulation) Act, 1957. | % of Equity/FDI Cap: 100% | Entry Route: Automatic
5.2.3.2  Coal & Lignite
(1) Coal & Lignite mining for captive consumption by power projects, iron & steel and cement units and other eligible activities permitted under and subject to the provisions of Coal Mines (Special Provisions) Act, 2015 and the Mines and Minerals (Development and Regulation) Act, 1957.
(2) Setting up coal processing plants like washeries subject to the condition that the company shall not do coal mining and shall not sell washed coal or sized coal from its coal processing plants in the open market and shall supply the washed or sized coal to those parties who are supplying raw coal to coal processing plants for washing or sizing.
(3) For sale of coal, coal mining activities including associated processing infrastructure subject to the provisions of Coal Mines (Special Provisions) Act, 2015 and the Mines and Minerals (Development and Regulation) Act, 1957 as amended from time to time and other relevant Acts on the subject. | % of Equity/FDI Cap: 100% | Entry Route: Automatic
5.2.3.3 Mining and mineral separation of titanium bearing minerals and ores, its value addition and integrated activities 5.2.3.3.1 Mining and mineral separation of titanium bearing minerals & ores, its value addition and integrated activities subject to sectoral regulations and the Mines and Minerals (Development and Regulation Act 1957). | % of Equity/FDI Cap: 100% | Entry Route: Government
5.2.3.3.2 OTHER CONDITIONS 
(i)  FDI for separation of titanium bearing minerals & ores will be subject to the following additional conditions viz.: 
(A)  value addition facilities are set up within India along with transfer of technology;
(B)  disposal of tailings during the mineral separation shall be carried out in accordance with Rules framed by the Atomic Energy Regulatory Board such as Atomic Energy (Radiation Protection) Rules, 2004 and the Atomic Energy (Safe Disposal of Radioactive Wastes) Rules, 1987.
(ii)  FDI will not be allowed in mining of “prescribed substances” listed in the Notification No. S.O. 61(E), dated 18.1.2006, issued by the Department of Atomic Energy.
(iii) “Associated Processing Infrastructure" as contained at Para 5.2.3.2 above includes coal washery, crushing, coal handling, and separation (magnetic and non-magnetic) [...]" (Government of India/Ministry of Commerce and Industry (2020), Consolidated FDI Policy (Effective from October 15, 2020))
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"The Government of India has reviewed the extant FDI policy on various sectors and has made following amendments in the Consolidated FDI Policy Circular of 2017 (FDI Policy), effective from August 28, 2017, and as amended from time to time.
2. Coal Mining: Para 5.2.3.2 of FDI Policy is amended to be read as under: 
Sector/Activity | % of Equity/FDI Cap | Entry Route 
[Sector/Activity] 5.2.3.2 Coal & Lignite
(1) Coal & Lignite mining for captive consumption by power projects, iron & steel and cement units and other eligible activities permitted under and subject to the provisions of Coal Mines (Special Provisions) Act, 2015 and the Mines and Minerals (Development and Regulation) Act, 1957.
(2) Setting up coal processing plants like washeries subject to the condition that the company shall not do coal mining and shall not sell washed coal or sized coal from its coal processing plants in the open market and shall supply the washed or sized coal to those parties who are supplying raw coal to coal processing plants for washing or sizing. | % of Equity/FDI Cap: 100% | Entry Route: Automatic 
(3) For sale of coal, coal mining activities including associated processing infrastructure subject to the provisions of Coal Mines (Special Provisions) Act, 2015 and the Mines and Minerals (Development and Regulation) Act, 1957 as amended from time to time and other relevant Acts on the subject.  | % of Equity/FDI Cap: 100% | Entry Route: Automatic 
Following new Clause 5.2.3.3.2 (iii) is added under other conditions of Para 5.2.3.3.2 of FDI Policy: "Associated Processing Infrastructure" as contained at Para 5.2.3.2 above includes coal washery, crushing, coal handling, and separation (magnetic and non-magnetic)." [...]" (Government of India/Ministry of Commerce & Industry (2019), Press Note Press Note No. 4 (2019 Series))  
Government of India/Ministry of Commerce and Industry (2020), Consolidated FDI Policy (Effective from October 15, 2020)
Government of India/Ministry of Commerce & Industry (2019), Press Note Press Note No. 4 (2019 Series)
[<a href="https://dpiit.gov.in/sites/default/files/FDI-PolicyCircular-2020-29October2020_0.pdf">Policy</a>],[<a href="https://dpiit.gov.in/sites/default/files/pn4_2019.pdf">PN</a>]