Yellow crystal aggregates of the rare phosphate-vanadate mineral metaschoderite from the type locality (Fish Creek Range, Eureka County, Nevada, United States of America). — Photo: David Hospital · CC BY-SA 4.0
Metaschoderite
Metaschoderite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Al(PO₄)·3H₂O.
It crystallizes in the monoclinic crystal system (space group P2/m).
Key properties: Mohs hardness 2; optically biaxial.
IMA symbol Msdr, IMA status: approved, named in 1962.
Typically a dehydration product of schoderite.
It is found associated with Schoderite, wavellite, vashegyite (Fish Creek, Nevada, USA); metahewettite, schoderite, bokite, minyulite, leucophosphite (Cockalorum Wash, Nevada, USA).
The prefix meta- denotes the dehydration product of schoderite.