Grain textures

It should be emphasized that this siderophile cutoff should never be constmed as an upper limit, sine qua non, and nor should data below the cutoff be taken as complete proof of pristine composition. In evaluating suspected pristine samples all relevant traits, such as texture and mineralogy (silicates in gross disequilibrium, or more obviously FeNi metal with typical meteoritic kamacite composition, can be indicators of impact mixing), other aspects of bulk composition (absence of KREEP contamination can be a mildly favorable indicator of pristinity) and isotopic data (an extremely old age can be mildly favorable) should be assessed, if possible (cf. Ryder et al., 1980 Warren, 1993). Of course, a fine-grained texture, disequilibrium (zoned) silicates, and KREEP contamination, all are inevitable (but fortunately, high siderophile concentrations are not), if the pristine rock happens to be KREEP basalt. 

Spiral grain F igure/grain/texture Hardness movement in service ability to stain Newsprint - high speed printing,... 

Bread improvers consist of substances which, added to the four fundamental bread constituents mentioned above, will improve the bread. These bread improvers are added to perfect the bread in one or more of the following ways color, bloom, size of loaf, shape of loaf, grain, texture, velvetiness of crumb, taste, flavor, aroma, zest of loaf, length of time required for staling, economy of gas production in dough, or water absorption capacity. 

Each lithology must be described in terms of its mineralogy and grain texture treated separately. The present paper discusses the principles of mechanical and chemical compaction for different types of sediment. 

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