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Phosphate

Czochralskiite

Na₄Ca₃Mg(PO₄)₄
Hardness4–5
Crystal systemOrthorhombic
ClassPhosphate

Czochralskiite

Czochralskiite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Na₄Ca₃Mg(PO₄)₄.

It crystallizes in the orthorhombic crystal system (space group Pnma). It is a member of the Aphthitalite structural group.

Key properties: Mohs hardness 4–5; specific gravity 3.132; White streak; Vitreous luster; optically biaxial.

IMA symbol Cz, IMA status: approved, named in 2015.

A primary phase in graphite-bearing nodules, in an iron meteorite.

It is found associated with Graphite, triolite, schreibersite, cohenite, merrillite, brianite, fluorapatite, kamacite, taenite, tetrataenite.

The mineral was named to honor Jan Czochralski (1885-1953), a Polish chemist, crystallographer and metallurgist.

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 C minerals or help write this entry.