Delrioite
Delrioite is an IMA-recognized mineral species in the vanadate class, with the chemical formula Sr(VO₃)₂·4H₂O.
It crystallizes in the monoclinic crystal system (space group I2/a). It is a member of the Delrioite structural group.
Key properties: Mohs hardness 2; specific gravity 3.1; Vitreous to pearly luster; optically biaxial.
IMA symbol Dl, IMA status: approved, named in 1959.
An efflorescence on sandstone of the Salt Wash member of the Jurassic Morrison Formation in association with a U–V deposit.
It is found associated with Metadelrioite, rossite, metarossite, quartz.
The name refers to Mexican mineralogist Andrés Manuel del Rio (1764–1849), who first discovered vanadium in North America.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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