Variation of effective porosity of a binary granular mixture of matrix and chondrules with volume fraction (with respect to matter-filled volume) of matrix. Full line: the case of random closest packing of spheres, corresponding to Dcp = 0.64. Dashed line: the case of loosest close packing of spheres, corresponding to Dcp = 0.56. Dotted line: the case of random closest packing of the matrix material where the interspersed chondrules are more densely packed than in the loose close packing.
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