halite

Different minerals of evaporitic origin (halite [NaCl], gypsum [CaS[O.sub.4] x 2[H.sub.2]O], epsomite [MgS[O.sub.4] x 7[H.sub.2]O], and chloromagne-site [Mg[Cl.sub.2]]) were found within the argillites in boreholes drilled in the spring's area [10].

Name Crystal <hkl> Color system Chlorargyrite Cubic <002> Green Silver oxide Cubic <111> Red <002> Sodium sulfide Cubic <022> Orange Sulfur helical Hexagonal <110> Black Ice Tetragonal <021> Blue Halite Cubic <002> Wine Aluminium trihydroxide Monoclinic <200> Violet Potassium Cubic <001> Plum <111> Silver Cubic <002> Black <022> <113> % Name 0.1 ml 0.4 ml 0.4ml Dried at 40[degrees]C Dried at 100[degrees]C Chlorargyrite 2.1 3.2 Silver oxide 0.3 3.7 Sodium sulfide 14.6 12.2 Sulfur helical 15.2 26.1 Ice 36.3 21.4 Halite 11.0 10.8 Aluminium trihydroxide 2.2 2.1 Potassium 2.1 2.5 Silver -- -- 42.3 Values are obtained by Rietveld analysis.

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During glacial periods, when there was a drop in global temperatures, expansion of ice around the polar regions and a drop in oceanic sea level and atmospheric carbon dioxide concentrations, there was dilution of the lake, accompanied by the dissolution of Halite salt.

All phases were identified in this sample; they are halite [NaCl], thermonatrite [[Na.sub.2](C[O.sub.3])[H.sub.2]O], and natrite [[Na.sub.2](C[O.sub.3])].

Since the early 1980s, the Dead Sea has been halite supersaturated [11, 12].

The Na-Cl-type indicated the presence of high chloride concentrations in the aquifer which may originate from the dissolution of halite, influx of sewage or waste water, and mainly intrusion of sea water [40].

Within the Meyal Oil Field wells, the Chorgali Formation is dominated by dolostone, dolostone associated with evaporites (gypsum, anhydrite, halite), minor limestone and shale intercalations.

Official sources told reporter during a visit to the saltmine here on Thursday that the reserves contain rock salt in the form of halite (98 percent) and is said to be of pre-Cambrian age.

Size of halite crystals is about 1 micron, while the length of willemite crystals is 50 ...

Halite, sulphates, sabkhat and Salinas of the coastal regions and Sabkha Matti of Abu Dhabi, United Arab Emirates.

"Yes, sabkha has many minerals such as gypsum and halite [table salt].