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Pintadoite

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About PintadoiteHide

Formula:
Ca2(V2O7) · 9H2O
Colour:
Light to dark green
Name:
After the locality in the Pintado Canyon (Cañon Pintado), Utah, USA. Pronounced peen-ta'-do-ite.
A secondary minerals occurring as efflorescences on sandstone in protected outcrops.


Classification of PintadoiteHide

Approved, 'Grandfathered' (first described prior to 1959), Questionable
First Published:
1914
8.FC.15

8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
47.4.3.1

47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
21.2.5

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

Physical Properties of PintadoiteHide

Transparency:
Translucent
Colour:
Light to dark green

Optical Data of PintadoiteHide

Type:
Uniaxial
Pleochroism:
Weak
Comments:
In yellow-greens.

Chemical Properties of PintadoiteHide

Formula:
Ca2(V2O7) · 9H2O
IMA Formula:
Ca2V5+2O7 · 9H2O

Crystallography of PintadoiteHide

Morphology:
Occurs as crusts and stains. Twinned, lathlike crystals result from solution after dissolved in water.

Type Occurrence of PintadoiteHide

General Appearance of Type Material:
Efflorescences
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA: #98962. U.S. National Museum of Natural History, Washington, D.C., USA: #R5714, 93657.
Geological Setting of Type Material:
McElmo Sandstone.
Associated Minerals at Type Locality:
Reference:
Hess, F.L. and Schaller, W.T. (1914) Pintadoite and Uvanite, two new vanadium minerals from Utah : A preliminary note. Journal of the Washington Academy of Science: 4: 576-579.

Other Language Names for PintadoiteHide

German:Pintadoit
Simplified Chinese:四水钒钉矿
Spanish:Pintadoita

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Pintadoite associated with Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2O

Related Minerals - Nickel-Strunz GroupingHide

8.FC.XHylbrowniteNa3Mg(P3O10) · 12H2O Mon. 2/m
8.FC.05FianeliteMn2+2((V,As)2O7) · 2H2OMon.
8.FC.10CanaphiteNa2Ca(P2O7) · 4H2OMon.
8.FC.20Arnhemite(K,Na)4Mg2(P2O7)2 · 5H2OHex.
8.FC.25WooldridgeiteNa2CaCu2+2(P2O7)2 · 10H2OOrth. mm2 : Fdd2
8.FC.30KanoneroviteNa3Mn2+(P3O10) · 12H2OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.2.1MetarossiteCa(V2O6) · 2H2OTric. 1 : P1
21.2.2RossiteCa(VO3)2•4H2OTric. 1 : P1
21.2.3MetahewettiteCaV6O16 · 3H2OMon. 2/m
21.2.4HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
21.2.6Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
21.2.7Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
21.2.8PascoiteCa3(V10O28) · 17H2OMon. 2 : B2
21.2.9SherwooditeCa4.5(AlV4+2V5+12O40) · 28H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
21.2.10MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
21.2.11Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon. 2/m : P21/m
21.2.12HummeriteK2Mg2(V10O28) · 16H2OTric.
21.2.13MetadelrioiteCaSr(V2O6)(OH)2Tric.
21.2.14DelrioiteCaSr(V2O6)(OH)2 · 3H2OMon.
21.2.15Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
21.2.16GamagariteBa2Fe3+(VO4)2(OH)Mon. 2/m : P21/m

Other InformationHide

Notes:
Slowly soluble in water.
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 PintadoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hess, F.L. and Schaller, W.T. (1914) Pintadoite and Uvanite, two new vanadium minerals from Utah : A preliminary note. Journal of the Washington Academy of Science: 4: 576-579.
Palache, Charles, Harry Berman and Clifford Frondel (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 1053.

Internet Links for PintadoiteHide

Localities for PintadoiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Ontario
    • Thunder Bay District
Currie (1980)
USA
 
  • Arizona
    • Apache County
      • Carrizo Range
        • Northeast Carrizo Mountains Mining District
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 132.
      • Lukachukai Mts
        • Lukachukai Mining District
          • Cove
Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
          • White Ash Peak
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 114.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 329; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 329; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
      • Red Rock Mining District
        • Red Rock (Red Valley)
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 131.
  • Colorado
    • Montezuma Co.
      • McElmo Creek (Ute Mountains) Area
Minerals of Colorado (1997) Eckel, E. B.
    • Montrose Co.
      • Uravan Mining District
        • Bull Canyon
Collected by and in the collection of Brent Thorne.
        • Paradox Valley
Dana 7:I:602.
    • San Miguel Co.
      • Slick Rock Mining District
Min News (1987) 3:9 p 5-6
  • Nevada
    • Eureka Co.
      • Gibellini Mining District
        • Fish Creek Range
NBMG Spec. Pub. 31 Minerals of Nevada
  • Utah
    • Emery Co.
      • San Rafael Mining District (San Rafael Swell)
DANA R. KELLEY AND PAUL F. KERR (1958) URANO-ORGANIC ORE AT TEMPLE MOUNTAIN, UTAH. BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA VOL. 69. PP. 701-756.
    • San Juan Co.
      • Pintado Canyon
Hess, F.L. & Schaller, W.T. (1914): Pintadoite and Uvanite, two new vanadium minerals from Utah : A preliminary note. Journal of the Washington Academy of Science, 4, 576-579.
 
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