Senegalite

Senegalite is a rare aluminum phosphate. It is a hydrated hydroxy phosphate of aluminum. It is named after Senegal, the country in which it was first found to occur.^[4][5]

Senegalite
General
Category	Minerals
Formula	Al2(PO4)(OH)3⋅3H2[1]
IMA symbol	Sng[2]
Identification
Color	Colorless, Light yellow[3]

This rare specimen of a rediscovery features large boxwork-like cavities lined with senegalite and various phosphates species in a limonite gossan matrix.

The molecular structure of the phosphate mineral senegalite is Al
₂(PO
₄)(OH)
₃⋅3H
₂O.^[6][5]