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It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal.

Tincal, Tinkal, ting′kal, n. crude borax.

Tincal, or Biborate of Soda, is also largely found all along the coast, but the export was long prohibited, the suspicious jealousy of the Peruvian Government seeking to obtain first of all conclusive evidence of the value of this natural product, and the best means of making it contribute to the State treasury.

For a long time the borax of Europe was imported from Central Asia, through Constantinople and Venice, under the name of tincal or tincar.

Tibetan mineral deposits have been known since very early times, and formerly the crude material was exported to Europe, under the name of tincal, for the preparation of pure borax and other boron salts.