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Doloresite

A valid IMA mineral species - grandfathered
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About DoloresiteHide

06542320015395169218874.jpg
Dolores River
Formula:
V4+3O4(OH)4
Colour:
Nearly black with dark bronzy tarnish. Very fine fragments under oil immersion are reddish brown to yellow red in transmitted light.
Lustre:
Sub-Metallic
Specific Gravity:
3.27 - 3.33
Crystal System:
Monoclinic
Name:
Named for the Dolores River, "a major stream of the Colorado Plateau" and near the type locality.
Often intimately intermixed with other vanadium oxide minerals, especially montroseiteparamontroseite.



Unique IdentifiersHide

Mindat ID:
1305
Long-form identifier:
mindat:1:1:1305:1
GUID
(UUID V4):
e135fab9-38fd-4813-be13-c2c1d5366ad4

IMA Classification of DoloresiteHide

Classification of DoloresiteHide

4.HE.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
47.4.7.1

47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
7.12.6

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
DlrIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of DoloresiteHide

Sub-Metallic
Transparency:
Translucent, Opaque
Colour:
Nearly black with dark bronzy tarnish. Very fine fragments under oil immersion are reddish brown to yellow red in transmitted light.
Streak:
Greenish black
Cleavage:
Distinct/Good
Flaky
Fracture:
Fibrous
Density:
3.27 - 3.33 g/cm3 (Measured)    3.41 g/cm3 (Calculated)
Comment:
Measured with a Berman balance.

Optical Data of DoloresiteHide

Type:
Biaxial
RI values:
n = 1.90
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Anisotropism:
Strong
Colour in reflected light:
Gray, variable along the elongation of the crystals, and shows selective absorption in plane polarized light

Chemistry of DoloresiteHide

Mindat Formula:
V4+3O4(OH)4

Crystallography of DoloresiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 19.64(6) Å, b = 2.99(1) Å, c = 4.83(2) Å
β = 103.91°
Ratio:
a:b:c = 6.569 : 1 : 1.615
Unit Cell V:
275.32 ų (Calculated from Unit Cell)
Z:
5
Twinning:
Lamellar submicroscopic twinning.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000095DoloresiteEvans H T, Mrose M E (1960) A crystal chemical study of the vanadium oxide minerals, haggite and doloresite American Mineralogist 45 1144-116619600293
0009206DoloresiteEvans H T, Mrose M E (1958) The crystal structures of three new vanadium oxide minerals Acta Crystallographica 11 56-581958Carlile, Wyoming, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.70 Å(100)
3.83 Å(50)
3.16 Å(42)
2.98 Å(15)
2.45 Å(50)
1.933 Å(25)
1.799 Å(21)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47e : [Vanadates, chromates, manganates]

Type Occurrence of DoloresiteHide

Place of Conservation of Type Material:
No defined type material.
Geological Setting of Type Material:
Unoxidized vanadium-uranium ores in sandstone. Secondary replacement of primary montroseite.
Associated Minerals at Type Locality:
Reference:
Stern, T.W., L.R. Stieff, H.T. Evans, Jr., and A.M. Sherwood (1957) Doloresite, a new vanadium oxide mineral from the Colorado Plateau. Amererican Mineralogist: 42: 587–593.

Other Language Names for DoloresiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Doloresite associated with CarnotiteK2(UO2)2(VO4)2 · 3H2O
1 photo of Doloresite associated with CalciteCaCO3
1 photo of Doloresite associated with GypsumCaSO4 · 2H2O
1 photo of Doloresite associated with TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O

Related Minerals - Strunz-mindat GroupingHide

4.HE.05MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
4.HE.10ShcherbinaiteV5+2O5Orth. mmm (2/m 2/m 2/m) : Pmmn
4.HE.15HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
4.HE.15MetahewettiteCaV6O16 · 3H2OMon. 2/m
4.HE.20BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
4.HE.20Bokite(Al,Fe)1.3(V5+,V4+,Fe3+)8O20 · 7.5H2OMon.
4.HE.20Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon. 2/m : B2/m
4.HE.20Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
4.HE.20Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon. 2/m : B2/m
4.HE.25HäggiteV3+V4+O2(OH)3Mon. 2/m : B2/m
4.HE.35DuttoniteV4+O(OH)2Mon. 2/m
4.HE.40CavoiteCaV4+3O7Orth. mmm (2/m 2/m 2/m) : Pnma

Other InformationHide

Notes:
Slowly soluble in 1:1 HCl, yielding a green solution. 1:1 HNO3 yields a blue solution. No reaction is observed with 1:1 NH4OH. Slightly soluble in 40% KOH. No reaction with either 20% KCN or 20% FeCl2.
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 DoloresiteHide

References for DoloresiteHide

Localities for DoloresiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Argentina
 
  • La Rioja Province
    • Coronel Felipe Varela department
      • Guandacol
de Brodtkorb (1982)
Australia
 
  • Northern Territory
    • Central Desert Region
Schmid +2 other references
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Leigh Creek
          • Puttapa
Muller (1972) +1 other reference
Canada
 
  • Prince Edward Island
Bottrill +2 other references
USA
 
  • Arizona
    • Apache County
      • Cane Valley Mining District
        • Yazzie Mesa
          • Monument No. 2 channel
Weeks et al. (1955) +4 other references
Stern (1957) +5 other references
  • Colorado
    • Mesa County
      • Gateway Mining District
        • Beaver Mesa
Am Min 45 (1960) +1 other reference
      • Uravan Mining District
        • Calamity Mesa
Eckel et al. (1997)
Eckel et al. (1997)
Eckel et al. (1997)
        • Tenderfoot Mesa
Eckel et al. (1997)
    • Montrose County
      • Uravan Mining District
        • Bull Canyon
Garrels et al. (1959)
Eckel et al. (1997)
Eckel et al. (1997)
        • Paradox Valley
Eckel et al. (1997)
  • New Mexico
    • Cibola County
      • East Grants Ridge Mining District
Northrop et al. (1996)
Northrop et al. (1996)
    • McKinley County
Northrop et al. (1996)
      • Ambrosia Lake subdistrict
NMBMMR Memoir 15 Geology and Technology ...
  • Utah
    • San Juan County
      • La Sal Creek Mining District
Färber (n.d.)
Page et al. (1956) +2 other references
Bullock (1981)
        • Casa Colorado Rock
Bullock (1981)
Bullock (1981)
Bullock (1981)
Page et al. (1956) +3 other references
Bullock (1981)
Bullock (1981)
Douglas L. Beahm and Andrew C. Anderson (2008)
  • Wyoming
    • Crook County
      • Carlile
Am Min 45:1144-1166
      • Northern Black Hills Mining District
USGS Bull 1082J
Uzbekistan
 
  • Navoiy
    • Central Kyzylkum Region
      • Auminzatau Mountains
Pavel.M. Kartashov (n.d.)
 
Mineral and/or Locality  
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