The Indian government is the largest minority shareholder in Hindustan Zinc, owning a 29.54% stake, but was not consulted by the company when it decided to split the firm to create separate entities for its zinc, lead, silver and recycling business, the government source said requesting anonymity.
Hindustan Zinc had said the plan would unlock "potential value" of the company, but the government official said it was unlikely to create value for shareholders.
The Ministry of Mines, that administers Hindustan Zinc, has communicated to the company about its objection, according to the source.
The government's mines ministry, finance ministry and Hindustan Zinc did not immediately respond to requests for comment.
In March, the government had opposed another proposal of Hindustan Zinc to buy two Vedanta entities. It had written to the market regulator underscoring its opposition, and the company dropped the plan.
Vedanta has a 64.9% stake in Hindustan Zinc.
(Reporting by Nikunj Ohri; Editing by Shounak Dasgupta)
