- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
In general, in coal mining, an inclination (of a roadway, working, or coal seam) steeper than 1:4.
Industry:Mining
In geochemical exploration, a relatively mobile element or gas that occurs in close association with an element or commodity being sought, but can be more easily found because it forms a broader halo or can be detected more readily by analytical methods. A pathfinder serves to lead investigators to a deposit of a desired substance. Often called indicator element, but this latter term is restricted by some authors to elements that are important components of the ores being sought.
Industry:Mining
In geochemical prospecting, a geochemical survey normally consisting of a series of preliminary experiments aimed at determining the existence and characteristics of anomalies associated with mineralization. This information is then used in selecting adequate prospecting techniques and in determining the factors and criteria that have a bearing on interpretation of the geochemical data.
Industry:Mining
In geochemical prospecting, a pattern or the distribution of the metal content of soil, rock, water, or vegetation.
Industry:Mining
In geochemical prospecting, refers to the probability of obtaining and recognizing indications of an orebody or mineralized district by the method being used. Reliability depends not only on whether a readily detectable target exists and how effective the exploration method is in locating it, but also on the extent to which the anomaly is specif. related to ore and the extent to which it is possible that non-significant anomalies may confuse the interpretation.
Industry:Mining
In geochemical prospecting, the homogeneity of a geochemical anomaly is a measure of the smoothness, or absence of strong local variations, in the distribution of the indicator element.
Industry:Mining
In geology, a bed lying next to or in contact with a formation of different character.
Industry:Mining
In geology, a sudden, violent change in the physical conditions of the Earth's surface; a cataclysm.
Industry:Mining
In geology, an underlying complex that behaves as a unit mass and does not deform by folding.
Industry:Mining
