Magnified Photo of Navrotskyite
Intergrown prisms of navrotskyite on bladed changoite with white sprays of ferrinatrite tinted blue by unidentified Mo-oxides. The field of view is 1.0 mm across.

Navrotskyite

The International Mineralogical Association has named a mineral in honor of Distinguished Professor Alexandra Navrotsky.

Navrotskyite, K2Na10(UO2)3(SO4)9·2H2O, occurs underground in the Blue Lizard mine, Red Canyon, White Canyon District, San Juan County, Utah. Crystals of navrotskyite occur as thin tapered needles in radial sprays and as tightly intergrown aggregates resembling fiber optic bundles. The structure consists of [(UO2)(SO4)3]4– chains connected via a complex framework of K-O and Na-O polyhedra, which are closely related to the uranyl sulfate minerals fermiite, meisserite, and pseudomeisserite-(NH4). Navrotskyite is named for American physical chemist, geochemist and materials scientist Dr. Alexandra Navrotsky (born 1943).

 

The crystal structure of navrotskyite viewed down a. The unit cell is indicated by dashed blue lines.