Mineralogical and textural changes accompanying ageing of silica sinter

@inproceedings{Rodgers1999MineralogicalAT,
  title={Mineralogical and textural changes accompanying ageing of silica sinter},
  author={Katja A. Rodgers and Kathleen A. Campbell},
  year={1999}
}
Twenty nine samples of silica sinter, ranging in age from modern to Miocene, record temporal changes in both mineralogy and texture. When ®rst deposited, sinters consist largely of noncrystalline spheres (<1±8 lm diameter) of opal-A exhibiting varying degrees of closepacking. Particle densities range from 1.5 to 2.1 g cm, total water 4±10 wt%, and porosities 35±60%. Changes over 10,000 years following deposition are slight although the spheres may be invested by an additional ®lm of secondary… CONTINUE READING

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