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Delrioite

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Formula:
CaSr(V
 
2
O
 
6
)(OH)
 
2
· 3H
 
2
O
System:MonoclinicColour:Pale yellow-green
Lustre:VitreousHardness: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

IMA status:Approved
Strunz 8th edition ID:4/G.07-70
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:47.1.2.1

47 : VANADIUM OXYSALTS
1 : Normal Anhydrous Vanadium Oxysalts
Hey's CIM Ref.: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

Type Locality:Jo Dandy Mine (Paradox D; Hummer; C; Blackburn; Yellow Bird No. 1; Oversight; Broker), Paradox Valley, Uravan District, Montrose Co., Colorado, USA
Year of Discovery:1959

Physical Properties of Delrioite

Lustre: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
Maximum Birefringence:δ = 0.083

Chart 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(V
 
2
O
 
6
)(OH)
 
2
· 3H
 
2
O
Simplified for copy/paste:CaSr(V2O6)(OH)2·3H2O
Essential elements:Ca, H, O, Sr, V
All elements listed in formula:Ca, H, O, Sr, V

Relationship of Delrioite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.HG.05Fervanite
Fe
3+
4
V
5+
4
O
 
16
· 5H
 
2
O
4.HG.10Huemulite
Na
 
4
Mg(V
 
10
O
 
28
) · 24H
 
2
O
4.HG.15Vanalite
NaAl
 
8
V
 
10
O
 
38
· 30H
 
2
O
4.HG.20Simplotite
CaV
4+
4
O
 
9
· 5H
 
2
O
4.HG.25Vanoxite
V
4+
4
V
5+
2
O
 
13
· 8H
 
2
O
4.HG.30Navajoite
Fe
3+
 
V
5+
9
O
 
24
· 12H
 
2
O
4.HG.40Metadelrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
4.HG.45Barnesite
(Na,Ca)V
 
6
O
 
16
· 3H
 
2
O
4.HG.50Hendersonite
(Ca,Sr)
 
1.3
V
 
6
O
 
16
· 6H
 
2
O
4.HG.55Grantsite
(Na,Ca)V
 
6
O
 
16
· 4H
 
2
O
4.HG.60Lenoblite
V
4+
2
O
 
4
· 2H
 
2
O
4.HG.65Satpaevite
Al
 
12
V
4+
2
V
5+
6
O
 
37
· 30H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
21.2.1Metarossite
Ca(V
 
2
O
 
6
) · 2H
 
2
O
21.2.2Rossite
Ca(V
 
2
O
 
6
) · 4H
 
2
O
21.2.3Metahewettite
CaV
 
6
O
 
16
· 3H
 
2
O
21.2.4Hewettite
CaV
 
6
O
 
16
· 9H
 
2
O
21.2.5Pintadoite
Ca
 
2
(V
 
2
O
 
7
) · 9H
 
2
O
21.2.6Hendersonite
(Ca,Sr)
 
1.3
V
 
6
O
 
16
· 6H
 
2
O
21.2.7Fernandinite
(Ca,K)(V
5+
 
,V
4+
 
,Fe
2+
 
)
 
8
O
 
20
· 10H
 
2
O
21.2.8Pascoite
Ca
 
3
(V
 
10
O
 
28
) · 17H
 
2
O
21.2.9Sherwoodite
Ca
 
4.5
(AlV
4+
2
V
5+
12
O
 
40
) · 28H
 
2
O
21.2.10Melanovanadite
Ca(V
5+
 
,V
4+
 
)
 
4
O
 
10
· 5H
 
2
O
21.2.11Grantsite
(Na,Ca)V
 
6
O
 
16
· 4H
 
2
O
21.2.12Hummerite
K
 
2
Mg
 
2
(V
 
10
O
 
28
) · 16H
 
2
O
21.2.13Metadelrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
21.2.15Straczekite
(Ca,K,Ba)(V
5+
 
,V
4+
 
)
 
8
O
 
20
· 3H
 
2
O
21.2.16Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)(VO
 
4
)
 
2
(OH)

Other Names for Delrioite

Other Languages:
German:Delrioit
Spanish:Delrioita

Other Information

Health Warning: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

Search Engines:
  • Look for Delrioite on Google
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  • External Links:
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  • Look for Delrioite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Delrioite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Fabre Minerals - search for Delrioite specimens
  • Buy from McDougall Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Find Delrioite on www.crystalclassics.co.uk
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  • Localities for Delrioite

    (TL) indicates type locality. ? 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
     
    • Colorado
      • Montrose Co.
        • Uravan District
          • Paradox Valley
    Amer.Min.(1959) 44, 261-264
    • Nevada
      • Lincoln Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
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