Definition of natromontebrasite in English:

natromontebrasite

noun

Mineralogy
  • A triclinic basic fluoride and phosphate of sodium, lithium, and aluminium, (Na,Li)Al(PO₄)(OH,F), with more sodium than lithium, found as whitish crystals.

Origin

Early 20th century; earliest use found in Mineralogy Magazine. After French natromontebrasite from natro- + montebrasite.