IMA mineral species

Millisite

NaCaAl₆(PO₄)₄(OH)₉·3H₂O

Phosphate mineral.

Millisite specimen
Millisite.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaNaCaAl₆(PO₄)₄(OH)₉·3H₂O
ElementsNa, Ca, Al, P, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolMill
Nickel–Strunz class8.DL.10

“—” means no reliable value in Wikidata yet. Check Mindat for full data.

🌍 Where it's found

Type locality (where it was first described): Clay canyon, Fairfield, United States

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.