| Millisite | |
|---|---|
 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
[edit]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
[edit]- ^ "Millisite". www.mindat.org. Retrieved 2025-08-22.
- ^ "Millisite Mineral Data". webmineral.com. Retrieved 2025-08-22.
- ^ 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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