Kryzhanovskite Locality: Rapid Creek , Dawson Mining District, Yukon Territory , Canada ( Locality at mindat.org ) Size: thumbnail, Kryzhanovskite Excellent representative specimen with several sharp xls on contrasting matrix. Some large crystals are damaged but they are huge. there are a few sharp, intact, smaller crystals of 2-3 mm — Photo: Robert M. Lavinsky · CC BY-SA 3.0
Kryzhanovskite
Kryzhanovskite is an IMA-recognized mineral species in the phosphate class, with the chemical formula (Fe³⁺,Mn²⁺)₃(PO₄)₂(OH,H₂O)₃.
It crystallizes in the orthorhombic crystal system (space group Pbna). It is a member of the Reddingite structural group.
Key properties: Mohs hardness 3.5–4; specific gravity 3.31; Yellowish brown streak; Vitreous to dull luster; optically biaxial.
IMA symbol Kry, grandfathered status — known before the IMA’s founding, named in 1950.
A rare low-temperature oxidation product of phosphate minerals in complex granite pegmatites and iron formations.
It is found associated with Sicklerite, triphylite (Kalba Range, Kazakhstan); ferrisicklerite, triphylite (Clementine II pegmatite, Namibia); garyansellite, ludlamite, arrojadite.
The mineral was named to honor Vladimir Il’ich Kryzhanovskii (1881–1947), Russian mineralogist, Curator of the A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.