"It is probably the last major deposit of Joycean material," he said.
Algeria and Mauritania have several major deposits of iron ore.
This site was located near a major deposit of gypsum (alabaster).
The quality of oil from the major deposits varies considerably.
The major deposits were found in the 19th century.
In addition there were major deposits of gold, tin, zinc, tungsten and uranium.
Fields in northern Alberta include four major deposits which underlie almost 70,000 square kilometres of land.
The region also contains major deposits of uranium, contained in sandstones.
State officials and landowners also argue that Exxon has not developed plans to remove major deposits of oil buried beneath the shore.
Unconcerned, the team sets down close to what sensors read is a major milgonite deposit.