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Delrioite

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Andrés Manuel del Río Fernández
Formula:
CaSr(V2O6)(OH)2 · 3H2O
System:
Monoclinic
Colour:
Pale yellow-green
Lustre:
Vitreous
Hardness:
2
Name:
Named in 1959 by Mary E. Thompson and Alexander M. Sherwood in honor of Andrés Manuel del Río Fernández [November 10, 1764 Spain — March 23, 1849], who in 1801 announced the discovery of a new element, erythronium, but who withdrew the proposal, because the samples sent to Alexander von Humboldt were wrongly judged to be chromium by Hippolyte Victor Collet-Descotils, who was chosen to verify the new element's validity. Hippolyte Victor Collet-Descotils wrongly concluded that erythronium was merely chromium. When vanadium was announced 30 years later, it was found that del Rio had determined his element accurately even though he had lost priority.
The CaSr analogue of calciodelrioite.

Classification of Delrioite

Approved
4.HG.35

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
G : Unclassified V oxides
47.1.2.1

47 : VANADIUM OXYSALTS
1 : Normal Anhydrous Vanadium Oxysalts
21.2.14

21 : Vanadates (and vanadates with arsenate or phosphate)
2 : Vanadates of Mg, Ca, Sr or Ba
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Type Occurrence of Delrioite

Year of Discovery:
1959

Physical Properties of Delrioite

Vitreous
Colour:
Pale yellow-green
Hardness (Mohs):
2

Crystallography of Delrioite

Crystal System:
Monoclinic
Cell Parameters:
a = 17.17Å, b = 7.08Å, c = 14.64Å
β = 102.29°
Ratio:
a:b:c = 2.425 : 1 : 2.068
Unit Cell Volume:
V 1,738.91 ų (Calculated from Unit Cell)

Optical Data of Delrioite

Type:
Biaxial (-)
RI values:
nα = 1.783 nβ = 1.834 nγ = 1.866
Max Birefringence:
δ = 0.083
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
extreme

Chemical Properties of Delrioite

Formula:
CaSr(V2O6)(OH)2 · 3H2O
Essential elements:
All elements listed in formula:

Relationship of Delrioite to other Species

4.HG.05FervaniteFe43+V45+O16 · 5H2O
4.HG.10HuemuliteNa4Mg(V10O28) · 24H2O
4.HG.15VanaliteNaAl8V10O38 · 30H2O
4.HG.20SimplotiteCaV44+O9 · 5H2O
4.HG.25VanoxiteV44+V25+O13 · 8H2O
4.HG.30NavajoiteFe3+V95+O24 · 12H2O
4.HG.40MetadelrioiteCaSr(V2O6)(OH)2
4.HG.45Barnesite(Na,Ca)V6O16 · 3H2O
4.HG.50Hendersonite(Ca,Sr)1.3V6O16 · 6H2O
4.HG.55Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2O
4.HG.60LenobliteV24+O4 · 2H2O
4.HG.65SatpaeviteAl12V24+V65+O37 · 30H2O
21.2.1MetarossiteCa(V2O6) · 2H2O
21.2.2RossiteCa(V2O6) · 4H2O
21.2.3MetahewettiteCaV6O16 · 3H2O
21.2.4HewettiteCaV6O16 · 9H2O
21.2.5PintadoiteCa2(V2O7) · 9H2O
21.2.6Hendersonite(Ca,Sr)1.3V6O16 · 6H2O
21.2.7Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2O
21.2.8PascoiteCa3(V10O28) · 17H2O
21.2.9SherwooditeCa4.5(AlV24+V125+O40) · 28H2O
21.2.10MelanovanaditeCa(V5+,V4+)4O10 · 5H2O
21.2.11Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2O
21.2.12HummeriteK2Mg2(V10O28) · 16H2O
21.2.13MetadelrioiteCaSr(V2O6)(OH)2
21.2.15Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2O
21.2.16GamagariteBa2Fe3+(VO4)2(OH)

Other Names for Delrioite

Name in Other Languages:
German:Delrioit
Spanish:Delrioita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Delrioite

Reference List:
American Mineralogist: 44: 261-264.

American Mineralogist: 55: 185-200.

Internet Links for Delrioite

Localities for Delrioite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
USA (TL)
 
  • Colorado
    • Montrose Co.
      • Uravan District
        • Paradox Valley
Amer.Min.(1959) 44, 261-264
  • Nevada
    • Lincoln Co.
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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