Delrioite

delrioite

metadelrioite

rossite

metarossite

Images

Formula: Sr(VO₃)₂.4H₂O
Hydrated vanadate, strontium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.1 measured, 3.16 calculated
Hardness: 2
Colour: Pale yellow-green
Solubility: Readily soluble in water, reversibly dehydrated
Environments

Sedimentary environments

Localities

At the type locality, the Jo Dandy Mine, Paradox Valley, Uravan Mining District, Montrose County, Colorado, USA, delrioite occurs as an efflorescence on sandstone on the dump at the the Hummer portal. This occurrence suggests that the delrioite is one of the soluble oxidation products of the lower valent vanadium minerals found in the mine (AM 44.261-264).
Associated minerals include metadelrioite, rossite, metarossite and quartz (HOM).

At the Pahranagat Mining District, Lincoln County, Nevada, USA, delrioite occurs with metadelrioite and calcite (Mindat photo).
Delrioite from the Pahranagat Mining District - Image

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