Vanderheydenite
Vanderheydenite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Zn₆(PO₄)₂(SO₄)(OH)₄·7H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: Mohs hardness 3; White streak; Vitreous luster; optically biaxial.
IMA symbol Vhy, IMA status: approved, named in 2014.
Found as a secondary mineral in a highly weathered recrystallized sulfide ore as a result of the release of Zn, S, As, and P from the breakdown of sphalerite, galena, and fluorapatite.
It is found associated with Pyromorphite, anglesite, liversidgeite.
The mineral was named to honor Arnold van der Heyden.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more V minerals or help write this entry.