The mina (or also: mine)
is an ancient Greek
unit of weight defined as being 50 shekels
The mina, like the shekel, was also a unit of currency
. In ancient Greece it was equal to 100 drachmae
In ancient Sumerian times, a m'na was a unit of weight; but talents and shekels had not yet been introduced. 1/60 talents and also 60 shekels.
Evidence from Ugarit indicates that a mina was equivalent to fifty shekels. The prophet Ezekiel refers to a mina ('maneh' in the King James Version) as sixty shekels.
Jesus Christ tells the "parable of the ten Minas" in the New Testament book of Luke - chapter 19:11-27.
Since the Akkadian period, 2 m'na was equal to 1 sila of water (cf. clepsydra, water clock).
Note, that the word "mine", in the sense of land mine came from the form of this ancient weight stone.