Jasonsmithite
Jasonsmithite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Mn²⁺₄ZnAl(PO₄)₄(OH)(H₂O)₇·3.5H₂O.
Key properties: Mohs hardness 2; specific gravity 2.63; White streak; Vitreous luster; optically biaxial.
IMA symbol Jsm, IMA status: approved, named in 2020.
Found in solution fractures and small vugs of partially oxidized granite-phosphate pegmatite by late-stage, low-temperature hydrothermal alteration.
It is found associated with Eosphorite, hureaulite, jahnsite-(MnMnMn), kastningite, mangangordonite, metaswitzerite, nizamoffite, stewartite, variscite, whiteite-(CaMnMn).
The mineral was named to honor American mineral collector Jason B. Smith (b. 1977) of Charlotte, North Carolina, a specialist in the minerals of the Foote Lithium Company mine.