Sideronatrite and metasideronatrite efflorescence formed in a coastal sea-spray environment

被引：7

作者：

Garvie, LAJ ^{[1
]}

机构：

[1] Arizona State Univ, Dept Geol, Tempe, AZ 85287 USA

来源：

MINERALOGICAL MAGAZINE | 1999年 / 63卷 / 05期

关键词：

sideronatrite; metasideronatrite; pyrite; weathering; efflorescence;

D O I：

10.1180/minmag.1999.063.5.12

中图分类号：

P57 [矿物学];

学科分类号：

070901 ;

摘要：

Sideronatrite [Na2Fe(SO4)(2)(OH). 3H(2)O] occurs as yellow botryoidal encrustations on low cliffs of weathered pyrite-bearing mudstones at Barton-on-Sea, Hampshire, England. Extensive areas of the cliffs, up to similar to 100 m(2) are coated with sideronatrite and its low solubility in cold water secures Its longevity. Dry samples of sideronatrite convert readily to metasideronatrite [Na2Fe(SO4)(2)(OH). H2O], the reaction to sideronatrite being reversible. Sideronatrite, it is suggested, forms as a result of weathering of pyrite that is present in the argillaceous sediments and reaction with Na from the sea-salt spray.

引用

页码：757 / 759

页数：3

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