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Pintadoite

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Frisco No. 2 claim, Pintado Canyon, San Juan Co., Utah, USA
© 2010, JGW

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Formula:
Ca
 
2
(V
 
2
O
 
7
) · 9H
 
2
O
Colour:Light to dark green
Name:After the locality in the Pintado Canyon (Cañon Pintado), Utah, USA.


A secondary minerals occurring as efflorescences on sandstone in protected outcrops.

Classification of Pintadoite

IMA status:Questionable/Doubtful 1914
Strunz 8th edition ID:7/C.26-10
Nickel-Strunz 10th (pending) edition ID:8.FC.15

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

47 : VANADIUM OXYSALTS
4 : Vanadium Bronzes
Hey's CIM Ref.:21.2.5

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

Type Locality:Frisco No. 2 claim, Pintado Canyon, San Juan Co., Utah, USA
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.
Year of Discovery:1914
Geological Setting of type material:McElmo Sandstone.
Associated Minerals at type locality:
QuartzGypsum

Physical Properties of Pintadoite

Diaphaneity (Transparency):Translucent
Colour:Light to dark green

Crystallography of Pintadoite

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

Optical Data of Pintadoite

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

Chemical Properties of Pintadoite

Formula:
Ca
 
2
(V
 
2
O
 
7
) · 9H
 
2
O
Essential elements:Ca, H, O, V
All elements listed in formula:Ca, H, O, V

Relationship of Pintadoite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.FC.05Fianelite
Mn
2+
2
((V,As)
 
2
O
 
7
) · 2H
 
2
O
8.FC.10Canaphite
Na
 
2
Ca(P
 
2
O
 
7
) · 4H
 
2
O
8.FC.20Arnhemite
(K,Na)
 
4
Mg
 
2
(P
 
2
O
 
7
)
 
2
 · 5H
 
2
O
8.FC.25Wooldridgeite
Na
 
2
CaCu
2+
2
(P
 
2
O
 
7
)
 
2
 · 10H
 
2
O
8.FC.30Kanonerovite
Na
 
3
Mn
2+
 
(P
 
3
O
 
10
) · 12H
 
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
21.2.6Hendersonite
(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
 
2
(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
21.2.14Delrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
 · 3H
 
2
O
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 Pintadoite

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

Other Information

Other Information:Slowly soluble in water.
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 Pintadoite

Reference List:

- +
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.

Palache, Charles, Harry Berman & 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 Pintadoite

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    • Localities for Pintadoite

    The 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.
    Hide Locality List
    (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.
    Canada
     
    • Ontario
      • Thunder Bay District
        • Marathon
    		Currie (1980)
    USA
     
    • Arizona
      • Apache Co.
        • Lukachukai Mts
    		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.
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 329; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
    • Colorado
      • Montezuma Co.
        • McElmo Creek (Ute Mountains) Area
    		Minerals of Colorado (1997) Eckels, E. B.
      • Montrose Co.
        • Uravan District
          • Paradox Valley
    		Dana 7:I:602.
      • San Miguel Co.
        • Slick Rock District
    		Min News (1987) 3:9 p 5-6
    • Nevada
      • Eureka Co.
        • Gibellini District
          • Fish Creek Range
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • Utah
      • Emery Co.
        • San Rafael 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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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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