THE PROSPECTOR'S HANDBOOK. 



LODE PLOT A horizontal lode. 



LONG TOM An apparatus used in the washing of gold-bearing 



" dirt." 

 LUTE Pasty matter to close joints of chemical apparatus and to coat 



surfaces so as to protect them from the action of flame. 



M. 



MACIZO (Spain) The part of a lode unworked. 



MALLEABLE Capable of being sliced and hammered out. 



MAN ENGINE Machine by which men ascend and descend a mine. 



MANTO (Spain) A single layer of a stratum. 



MARCO (Spain) Weight = 8 ounces. 



MARL Clay containing carbonate of lime. 



MATRIX The mineral associated with ore in a lode. (See Chaps. I. 



and VII.) 

 MEERSCHAUM A white soft mineral, dry to the touch, and adhering 



to the tongue when licked by it. Is a silicate of magnesia. 



Specific gravity *8 to I'O when dry. Occurs in veins or in 



kidney-shaped nodules in serpentine rocks. 

 MESA A tableland. 

 METALES CALIDOS (hot metals) (South America) Minerals capable 



of amalgamation, such as native silver, hornsilver, &c. 

 METALES FRIOS (cold metals) Minerals not suitable for the amalga- 



mation process. 



METALLURGY Art of extracting metals from their ores, &c. 

 METAMORPHIC Altered . 

 MOCK ORE A false kind of mineral. 



MONTON (Spain) A pile of ore. In Mexico a monton =17 quintals. 

 MOUNTAIN BLUE Blue copper ore. 

 MOUNTAIN CORK A variety of asbestos. 

 MOUNTAIN GREEN Malachite. 

 MOUNTAIN LIMESTONE Carboniferous limestone. 

 MUESTRAS (Spain) Samples of ores. 

 MUFFLE A small oven-shaped fire-proof furnace. 

 MULLOCK (Australia) Debris of the country rock filling a fissure. 

 MUNDIC Iron pyrites. 

 MUSCHELCHALK (German) A limestone formation containing fossil 



shells. 



N. 

 NODULE An irregularly-shaped rounded rock. 



o. 



OITAVO (Spain) About the eighth part of an ounce. 

 OjO (Spain) A bunch of ore. 

 ONCA == 442-72 grains troy. 





