La destinezita es un raro fosfato-sulfato de hierro, cuya localidad tipo se encuentra en Argenteau (Bélgica) y este ejemplar que presentamos procede de esta localidad. Muestra la característica forma arriñonada, nodular, con un tono beige. Una pieza para coleccionistas de TL y sistemáticos. Medidas: 4.0 x 3.5 x 2.4 cm. Encontrado en ±1990's. — Photo: Joan Rosell · CC BY-SA 4.0
Destinezite
The well-crystallized form of diadochite — a hydrated iron phosphate-sulfate recognized as a distinct IMA species.
Intro adapted from Wikipedia (CC BY-SA).
Destinezite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 3–4; specific gravity 4.411; optically biaxial.
IMA symbol Dtz, IMA status: approved, named in 1881.
Found as a secondary mineral in gossans and some coal deposits, formed by sulfate-rich solutions acting on earlier phosphates, may be post-mine; in cave deposits, the phosphate derived from guano.
It is found associated with Pickeringite-apjohnite (Alum Cave Bluff); hematite (El Laco volcano).
The mineral was named to honor M. Destinez. Destinezite is visibly crystalline, triclinic Fe2(PO4)(SO4)(OH)·6H2O. Diadochite is massive to earthy, poorly ordered.