ackley n Rock formation in which the metallic element molybdenum occurs.
   1983 MARTIN 35 The [Rencontre east] mine's most active period were the years just before World War II. Employees...lived for a time on the shores of Rencontre Lake in a cabin called 'Ackley City' after a company director, John W. Ackley... One permanent legacy of the mine remains: 'Ackley' has become the official geological name of the granite in which the molybdenum occurs.

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