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Phosphate

Hedegaardite

(Ca,Na)₉(Ca,Na)Mg(PO₄)₆(PO₃OH)
Crystal systemHexagonal
ClassPhosphate
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Hedegaardite specimen

Tan grey crystal aggregates of the rare hedegaardite from the TL (Lobos Mine, Punta de Lobos, Iquique Province, Tarapacá Region, Chile) and only one of the two known localities worldwide, both in Chile. Ex. Erich Laskowski collection (USA). — Photo: David Hospital · CC BY 4.0

Hedegaardite

Hedegaardite is an IMA-recognized mineral species in the phosphate class, with the chemical formula (Ca,Na)₉(Ca,Na)Mg(PO₄)₆(PO₃OH).

It crystallizes in the hexagonal crystal system (space group R3c). It is a member of the Cerite structural group.

IMA symbol Hed, IMA status: approved, named in 2014.

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 H minerals or help write this entry.