Delrioite

General Information:
 Chemical Formula:
CaSrV2O6(OH)2·3(H2O)
 Composition:
(Molecular Weight = 413.64 gm)
Strontium 21.18 % Sr
Calcium 9.69 % Ca
Vanadium 24.63 % V 
Hydrogen 1.95 % H 
Oxygen 42.55 % O 
 Empirical Formula:
CaSrV4+2O6(OH)2·3(H2O)
 Environment:
Coatings on sandstone.
 IMA Status:
Approved IMA 1959
 Locality:
Jo Dandy mine, Montrose County, Colorado, USA.
 Name Origin:
Named for Andres M. del Rio (1764-1849), Mexican mineralogist, who discovered vanadium.
Physical Properties:
 Color:
yellow brown, light yellow green, or dark green.
 Density:
3.1
 Diaphaniety:
Translucent
 Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Aggregates - Made of numerous individual crystals or clusters., Acicular - Occurs as needle-li ke crystals.
 Hardness:
2 - Gypsum
 Luster:
Vitreous - Pearly
 Streak:
pale yellow green
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