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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Title Description
 Machine Design   The application of scientific principles to the practical constructive art of engineering, with the object of expressing original ideas in the form of drawings. 
 Ore Geology   The branch of applied geology dealing with the genetic study of ore deposits. Syn: metallogeny; mining geology. See also: economic geology 
 Fragmentation   The breakage of rock during blasting in which explosive energy fractures the solid mass into pieces; the distribution of rock particle sizes after blasting.  
 Dyke   The British spelling of dike.  
 Lithology   The character of a rock described in terms of its structure, color, mineral composition, grain size, and arrangement of its component parts; all those visible features that in the aggregate impart individuality to the rock. Lithology is the basis of correlation in coal mines and commonly is reliable over a distance of a few miles. 
 Luster   The character of the light reflected by minerals; it constitutes one of the means for distinguishing them. There are several kinds of luster: metallic, the luster of metals; adamantine, the luster of diamonds; vitreous, the luster of broken glass; resinous, the luster of yellow resin, as that of eleolite; pearlylike pearl; and silkylike silk. These lusters have different degrees of intensity, being either splendent, shining, glistening, or glimmering. When there is a total absence of luster, the mineral is characterized as being dull 
 Quad   The composition quadrilateral for the Ca-Mg-Fe pyroxenes (enstatite-ferrosilite-diopside-hedenbergite).  
 Wave Diffraction   The cooperative scattering of any electromagnetic radiation where it
encounters an obstacle, esp. the edge of an obstacle, resulting in
constructive and destructive interference. Also, a single event resulting
from constructive interference. 
 Diffraction   The cooperative scattering of any electromagnetic radiation where it encounters an obstacle, esp. the edge of an obstacle, resulting in constructive and destructive interference. Also, a single event resulting from constructive interference. See also: optical diffraction; X-ray diffraction. Syn: wave diffraction 
 Uralitization   The development of amphibole from pyroxene; specif. a late-magmatic or metamorphic process of replacement whereby uralitic amphibole results from alteration of primary pyroxene. Also, the alteration of an igneous rock in which pyroxene is changed to amphibole; e.g., the alteration of gabbro to greenstone by pressure metamorphism.  
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