Delrioite
A valid IMA mineral species
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About Delrioite
Andrés Manuel del Río Fernández
Formula:
Sr(VO3)2 · 4H2O
Formerly given as CaSr(V2O6)(OH)2 · 3H2O. Updated based on the results of Kampf et al. (2012).
Colour:
Pale yellow-green
Lustre:
Vitreous, Pearly
Hardness:
2
Specific Gravity:
3.1
Crystal System:
Monoclinic
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], Spanish mineralogist 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.
Unique Identifiers
Mindat ID:
1255
Long-form identifier:
mindat:1:1:1255:9
IMA Classification of Delrioite
Approved
IMA Formula:
Sr(V5+O3)2·4H2O
First published:
1959
Classification of Delrioite
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
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
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
21 : Vanadates (and vanadates with arsenate or phosphate)
2 : Vanadates of Mg, Ca, Sr or Ba
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Dl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Delrioite
Vitreous, Pearly
Transparency:
Translucent
Colour:
Pale yellow-green
Hardness:
2 on Mohs scale
Density:
3.1(1) g/cm3 (Measured) 3.16 g/cm3 (Calculated)
Optical Data of Delrioite
Type:
Biaxial (-)
RI values:
nα = 1.783(3) nβ = 1.834(3) nγ = 1.866(3)
Max. Birefringence:
δ = 0.083
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
extreme
Pleochroism:
Visible
Comments:
X = colorless; Y = pale yellow; Z = deeper yellow.
Comments:
2V(meas.) = Medium to large.
Chemistry of Delrioite
Mindat Formula:
Sr(VO3)2 · 4H2O
Formerly given as CaSr(V2O6)(OH)2 · 3H2O. Updated based on the results of Kampf et al. (2012).
Formerly given as CaSr(V2O6)(OH)2 · 3H2O. Updated based on the results of Kampf et al. (2012).
Element Weights:
Elements listed:
Crystallography of Delrioite
Crystal System:
Monoclinic
Cell Parameters:
a = 17.17 Å, b = 7.08 Å, c = 14.64 Å
β = 102.29°
β = 102.29°
Ratio:
a:b:c = 2.425 : 1 : 2.068
Unit Cell V:
1,738.91 ų (Calculated from Unit Cell)
Z:
8
Twinning:
On {100}, not uncommon
Comment:
Point Group: m or 2/m.; Space Group: Ia or I2/a.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.52 Å | (vs) |
| 3.54 Å | (s) |
| 4.39 Å | (ms) |
| 3.26 Å | (ms) |
| 2.794 Å | (ms) |
| 2.174 Å | (m) |
| 4.19 Å | (w) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Delrioite
General Appearance of Type Material:
Radial aggregates of tiny acicular crystals.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 128296.
Geological Setting of Type Material:
Efflorescence on sandstone of the Salt Wash member of the Jurassic Morrison Formation associated with a U–V deposit.
Associated Minerals at Type Locality:
Other Language Names for Delrioite
Common Associates
Associations Based on Photo Data:
| 2 photos of Delrioite associated with Metadelrioite | CaSr(V2O6)(OH)2 |
| 1 photo of Delrioite associated with Calciodelrioite | Ca(VO3)2 · 4H2O |
Related Minerals - Strunz-mindat Grouping
| 4.HG. | Calciodelrioite | Ca(VO3)2 · 4H2O |
| 4.HG. | Trebiskyite | Na3Mg2[TiV9O28] · 22H2O |
| 4.HG. | Cadvanite | Cd(VO3)2 |
| 4.HG.05 | Fervanite | Fe3+4V5+4O16 · 5H2O |
| 4.HG.10 | Huemulite | Na4Mg(V10O28) · 24H2O |
| 4.HG.15 | Vanalite | NaAl9V12O42(OH)4 · 33H2O |
| 4.HG.20 | Simplotite | CaV4+4O9 · 5H2O |
| 4.HG.25 | Vanoxite | V4+4V5+2O13 · 8H2O |
| 4.HG.30 | Navajoite | Fe3+V5+9O24 · 12H2O |
| 4.HG.40 | Metadelrioite | CaSr(V2O6)(OH)2 |
| 4.HG.45 | Barnesite | (Na,Ca)V6O16 · 3H2O |
| 4.HG.50 | Hendersonite | (Ca,Sr)1.3V6O16 · 6H2O |
| 4.HG.55 | Grantsite | (Na,Ca)2+x(V5+,V4+)6O16 · 4H2O |
| 4.HG.60 | Lenoblite | V4+2O4 · 2H2O |
| 4.HG.65 | Satpaevite | Al12V4+2V5+6O37 · 30H2O |
| 4.HG.70 | Pandoraite-Ba | BaV4+5V5+2O16 · 3H2O |
| 4.HG.70 | Pandoraite-Ca | CaV4+5V5+2O16 · 3H2O |
Other Information
Notes:
Readily soluble in H2O; reversibly dehydrated.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Delrioite
mindat.org URL:
https://www.mindat.org/min-1255.html
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Please feel free to link to this page.
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References for Delrioite
Localities for Delrioite
Showing 4 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
USA | |
| Carnegie Museum of Natural History ... |
| Kampf et al. (2012) +1 other reference |
| Thompson et al. (1959) |
| Castor et al. (2004) |
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Pahranagat Mining District, Lincoln County, Nevada, USA