Pranavjyoti Deka was born on 21 July 1939 in
Calcutta. His father, Haliram Deka, was the first Assamese chief justice of the
Gauhati High Court and his mother was Vidyavati Deka. In 1955, he passed his Entrance Examination from
Don Bosco High School, Guwahati. He joined
Cotton College and passed
IA from here in 1957. He graduated with honors in mineral geology from the
Gauhati University in 1959. After that he obtained Masters in Geology from
Banaras Hindu University in 1961. Deka later received his
PhD in economic geology from the Leningrad Mining Institute, which is now known as
Saint Petersburg Mining University. ==Career==