What is Xuite?
Xuite is a rare iron phosphate oxide associated with unusual phosphate assemblages and valued mainly as a specialist mineralogical reference.
Mineralogy and structure
Reference formula: Fe2+Fe3+2(PO4)2O. Xuite is retained as a distinct guide label, but no matching public COD coordinate entry was selected for this batch. The page intentionally avoids assigning an artificial lattice. Xuite is classified with phosphates and has orthorhombic crystal symmetry. Typical hardness is 4–5 on the Mohs scale and specific gravity is approximately 3.8–4.2.
Colour, lustre and habit
Typical colours include black, dark brown, brown-black, red-brown. The usual granular, massive, microscopic habit and sub-metallic, dull, vitreous lustre help describe a specimen, but colour alone is not diagnostic.
Formation and notable localities
Xuite forms in or is associated with complex phosphate-rich pegmatites, oxidised iron-bearing assemblages and rare secondary environments. Important documented localities include Brazil, Germany, the United States and other phosphate localities reported in specialist literature.
A specialist iron phosphate oxide
Xuite is most useful as a documented reference term for collectors and mineralogists working with complex phosphate parageneses. Chemistry and provenance matter more than appearance.
Collecting and care
Protect from impact and acids, avoid dust-producing work and retain locality and analytical information.
