Rauvite
A valid IMA mineral species - grandfathered - questionable
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About Rauvite
Formula:
Ca(UO2)2(V10O28) · 16H2O
Colour:
Purplish black, grayish black, pale orange-yellow, brownish red, brownish yellow-orange
Lustre:
Adamantine, Waxy
Specific Gravity:
2.92
Name:
Named by Frank L. Hess in 1922 from the chemical symbols of its presumed constituents: RAdium, Uranium and Vanadium.
A rare and questionable mineral species occurring in the oxidized zones of U-V ores in Colorado Plateau-type deposits.
Unique Identifiers
Mindat ID:
3372
Long-form identifier:
mindat:1:1:3372:1
GUID
(UUID V4):
(UUID V4):
a4f31bff-ae07-4da0-8668-7a647f4995b5
IMA Classification of Rauvite
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Ca(UO2)2V10O28 · 16H2O
Type description reference:
Classification of Rauvite
4.HB.40
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
B : Uranyl Sorovanodates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
B : Uranyl Sorovanodates
47.4.4.1
47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
21.4.9
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
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 |
|---|---|---|
| Ruv | 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 Rauvite
Adamantine, Waxy
Transparency:
Translucent
Colour:
Purplish black, grayish black, pale orange-yellow, brownish red, brownish yellow-orange
Streak:
Olive-brown, yellow-brown
Tenacity:
Sectile
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.92 g/cm3 (Measured)
Optical Data of Rauvite
Type:
Biaxial (-)
RI values:
n = 1.88 - 1.95
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Rauvite
Mindat Formula:
Ca(UO2)2(V10O28) · 16H2O
Crystallography of Rauvite
Morphology:
Microcrystalline; a hardened gel-like precipitate in massive botryoidal crusts and thin coatings.
Comment:
No crystallography Crystal Data: n.d. Point Group: n.d.; Space Group: n.d. Z = n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.7 Å | (100) |
| 5.83 Å | (10) |
| 3.87 Å | (20) |
| 3.49 Å | (40) |
| 2.95 Å | (50) |
| 2.62 Å | (30) |
| 2.22 Å | (10) |
Comments:
ICDD 8-288
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47f : [Uranyl (U⁶⁺) minerals] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Rauvite
Co-Type Localities:
General Appearance of Type Material:
Fissure fillings or impregnations in sandstone.
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA: #134565. U.S. National Museum of Natural History, Washington, D.C., USA: #95060, R5715.
Geological Setting of Type Material:
Shinarump sandstone
Associated Minerals at Type Locality:
Reference:
Hess F L (1922) Uranium-bearing asphaltite sediments of Utah. Engineering and Mining Journal 114, 272-276
Other Language Names for Rauvite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 4.HB.05 | Carnotite | K2(UO2)2(VO4)2 · 3H2O |
| 4.HB.05 | Margaritasite | (Cs,K,H3O)2(UO2)2(VO4)2 · H2O |
| 4.HB.10 | Sengierite | Cu2(UO2)2(VO4)2 · 6H2O |
| 4.HB.15 | Curienite | Pb(UO2)2(VO4)2 · 5H2O |
| 4.HB.15 | Francevillite | Ba(UO2)2(VO4)2 · 5H2O |
| 4.HB.15 | Fritzscheite | Mn(UO2)2(PO4,VO4)2 · 10H2O (?) |
| 4.HB.15 | Finchite | Sr(UO2)2(V2O8) · 5H2O |
| 4.HB.20 | Metavanuralite | Al(UO2)2(VO4)2(OH) · 8H2O |
| 4.HB.20 | Vanuralite | Al(UO2)2(V2O8)(OH) · 11H2O |
| 4.HB.25 | Metatyuyamunite | Ca(UO2)2(VO4)2 · 3H2O |
| 4.HB.25 | Tyuyamunite | Ca(UO2)2(VO4)2 · 5-8H2O |
| 4.HB.30 | Strelkinite | Na2(UO2)2(VO4)2 · 6H2O |
| 4.HB.35 | Uvanite | U6+2V5+6O21 · 15H2O (?) |
| 4.HB.45 | Vandermeerscheite | K2[(UO2)2V2O8] · 2H2O |
Other Information
Special Storage/
Display Requirements:
Display Requirements:
Dehydrates on exposure forming a crackled surface.
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 Rauvite
mindat.org URL:
https://www.mindat.org/min-3372.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Rauvite
Localities for Rauvite
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.
Canada | |
| Rose (1973) |
UK | |
| Kemp et al. (1994) |
USA | |
| USGS PP538 |
| Scarborough (1981) | |
| Weeks et al. (1955) +5 other references |
| Galbraith (1959) +3 other references |
| Galbraith (1959) +2 other references | |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Excalibur Mineral Corporation |
| Weeks et al. (1964) +1 other reference |
| Weeks et al. (1964) | |
| USGS Bull 1042F +1 other reference |
| Eckel et al. (1997) | |
| Eckel et al. (1997) | |
| King (n.d.) | |
| Eckel et al. (1997) | |
| Amended Technical Report on Energy ... |
| Northrop et al. (1996) |
| Northrop et al. (1996) | |
| Northrop et al. (1996) |
| USGS Bull 1063F |
| USGS Bull 1063D +4 other references |
| Roberts et al. (1965) |
| Roberts et al. (1965) |
| Roberts et al. (1965) | |
| Roberts et al. (1965) | |
| USGS Bull 1063F | |
| USGS Bull 1009G +1 other reference |
| Bullock (1981) |
| Palache et al. (1951) +5 other references | |
| Palache et al. (1951) |
| Bullock (1981) | |
| Bullock (1981) | |
| Bullock (1981) |
| Bullock (1981) |
| Bullock (1981) |
| Bullock (1981) |
| USGS Bull 1082J |
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Monument No. 2 Mine, Monument No. 2 channel, Yazzie Mesa, Cane Valley Mining District, Apache County, Arizona, USA