Grain packing loose

The framework grains in sandstones cemented by microcrystalline and coarse to poikilotopic calcite display a loose grain packing even when their replacement by carbonates is considered. Evidence... 

For plastic-bonded materials, no clear-cut expression for the coercivity is known. It may be expected that it is rather similar, but with a smaller influence of B. For loosely packed powders, the B influence has become zero and should be multiphed by 0.48 to account for the isotropy (71). In all cases high coercivity is obtained by using small grains with limited plate-like shape, ie, the value of Nis not too high. 

Potassium Methylate. Potassium methoxide [865-33-8] KOCH, mol wt 70.13, is a fine, free-flowing, yellowish-white, caustic, hygroscopic powder purity 96.5—99% powder density after loose shaking, 0.75 g/mL apparent density (packing weight), 1.00 g/mL medium grain size, 0.05 —0.8 mm easily soluble in alcohols (33% in methanol at 20°C), insoluble in hydrocarbons. 

Similar but somewhat complicated tran-s ient phenomena) have been observed by Allen, Cook and Pack (Ref 44b) in fine-, grained, loose TNT mixture of fine and coarse loose TNT and in cast TNT. 

D. Kite, Jr, Safety Hazard Classification of Water-Wet Explosives , PATR 3223 (1965) (AD-460363/5ST) [Table 7 lists deton data for 18 granular w-filled expls loosely packed in Plexiglas tubes of 1.75" ID with wall thicknesses of from 1/8" to 1/4". Expl column lengths were from 10" to 20". Deton was achieved using either 33g Tetryl pellets or 40-grain RDX wafers, electric cap initiated. 

Up to 2% authigenic kaolinite and dickite occur in host rocks as loosely packed booklets of pseudo-hexagonal crystals (5-15 pm). They occur on authigenic quartz overgrowths and on partly dissolved feldspar grains. 

Fig. 7. (A) Blocky zoned meteoric calcite cement (type I) filling mouldic pore microcrystalline type II calcite (white arrow). Note intense bioclast replacement and loose packing (packing proximity = 36%k uncrossed polars. (B) Same field of view observed with cathodoluminescence type I calcite presents sharp CL zonation (black arrow), whereas type II calcite shows CL microzoning (white arrow). Note the high content of K-feldspars and plagioclase. Quartz grains do not show luminescence. AB-1 well 3244.45 m oil zone.

Levels of mechanical compaction are least in the Avalon/Ben Nevis Sandstone, as indicated by relatively loose packing. Pressure solution contacts are absent except between quartz grains and fossil or limestone fragments (see Fig. 17D). The presence of a high percentage of sedimentary rock fragments (average 10%), which include ductile shale clasts. 

Early precipitation of calcite cement is indicated by high (>25%) minus-cement porosity and the absence of other cements, except minor siderite and quartz cements and clay-mineral coatings. Framework grains enclosed by early calcite cement are loosely packed and often appear to be floating as a result of marginal replacement. Precipitation of the early calcite cement occurred after certain burial because some grain breakage had already taken... 

The density of the mass may vary, depending on the degree of packing of the grains. The density of a fluid is a unique function of temperature and pressure, as is that of each individual solid particle but the bulk density of the mass is not. The bulk density is a minimum when the mass is loose it rises to a maximum when the mass is packed by vibrating or tamping. 

By most general definition a sediment is a collection of particles - the sediment grains -which are loosely deposited on the sea floor and closely packed and consolidated under increasing lithostatic pressure. The voids between the sediment grains - the pores - form the pore space. In... 

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