| quartzitic country rocks of the Kalkfeld carbonatite complex, Namibia. The fluid inclusion population...relationship to the volatile-deficient, parental Kalkfeld carbonatite. Individual fluid inclusions display...halite, burbankite, sylvite, fluorocarbonate (rouvilleite ?), cryolite, Mn–Fe– calcite, feldspar/feldspathoid...this respect are similar to those of the parental Kalkfeld carbonatite, but are distinguished by a negative...carbonatitic fluid with the volatile-deficient, sövitic Kalkfeld carbonatite suggests that virtually all alkali |
