Millisite

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Millisite
Millisite.jpg
Pale yellow globular aggregates of millisite from Fairfield, Utah
General
Category Phosphate minerals
Formula NaCaAl6(PO4)4(OH)9·H2O

Millisite is a rare phosphate mineral. The mineral was named after Mr. F. T. Millis of Lehi, Utah. [1] Millisite can be found in altered phosphate deposits. [2]

Occurrence

Millisite was originally only known to occur in Fairfield, Utah and Thiès, Sénégal. [3] It has since been identified in the Bone Valley Formation of Florida, where it forms a major component of the aluminum phosphate zone.

References

  1. ↑ "Millisite". www.mindat.org. Retrieved 2025-08-22.
  2. ↑ "Millisite Mineral Data". webmineral.com. Retrieved 2025-08-22.
  3. ↑ Owens, J. P.; Altschuler, Z. S.; Berman, Robert (1960-06-01). "Millisite in Phosphorite from Homeland, Florida*". American Mineralogist. 45 (5–6): 547–561. ISSN   0003-004X.
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