Shortcut Navigation:

Halite (#6)

Halite (#6)

  • About

    • This specimen is an example of an alkali mineral that formed in an evaporite environment.

      Show more
  • Exhibition Text

    • Evaporite: Alkalic Collection
      Best known among several kinds of evaporite mineral deposits are the alkali minerals and the borate minerals.

      In the alkali lake, there develops a particularly high concentration of sodium, carbonate, calcium, and sulphate, together with chlorine, magnesium, potassium, and other highly soluble elements. As the lake waters evaporate, increasing concentration of these elements results in formation of various minerals, including common salt. West of Great Salt Lake, Utah, level miles of glistening salt can be seen in a famous deposit thick enough to support a local salt-processing industry.

      In the less common borate lakes, several of which exist in California, Nevada, and Oregon, minerals composed primarily of hydrous borates are formed. Borax, the most familiar borate mineral is always found; in the United States, most of the commercial borax comes from the California and Nevada desert regions of “20 mule” fame. It is used mostly for cleaning.

  • Collection Information

    • Halite NaCl

      Great Salt Lake, Utah

American Museum of Natural History

Central Park West at 79th Street
New York, NY 10024-5192
Phone: 212-769-5100

Open daily from 10 am-5:45 pm
except on Thanksgiving and Christmas
Maps and Directions

Enlighten Your Inbox

Stay informed about Museum news and research, events, and more!