Definitions
from The Century Dictionary.
- In mining, rubbishy; not metal-bearing; of no value.
Etymologies
Sorry, no etymologies found.
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Examples
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For instance, "mullocky" lode stuff, containing much clayey matter or material carrying a large percentage of heavy metal, such as titanic iron or metallic sulphides, will need a larger quantity of water per stamp than clean quartz.
Getting Gold: a practical treatise for prospectors, miners and students
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