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Stanleyite

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Ragra Mine (Minasragra), Junín, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru
© 2008, J. Weissman

Formula:
(V
4+
 
O)[SO
 
4
] · 6H
 
2
O
System:OrthorhombicColour:Light blue to greenish ...
Hardness:1 - 1½
Name:
Named after Sir Henry Morton Stanley (John Rowlands) (1841-1904), Welsh-American journalist who, on assignment from the New York Herald, found David Livingstone in Africa in 1871.
This page provides mineralogical data about Stanleyite.

Classification of Stanleyite

IMA status:Approved 1980
Strunz 8th edition ID:6/D.05-20
Nickel-Strunz 10th (pending) edition ID:7.DE.50

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
Dana 8th edition ID:29.6.13.1

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
Hey's CIM Ref.:25.8.6

25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
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Type Occurrence of Stanleyite

Type Locality:Ragra Mine (Minasragra), Junín, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru
Place of Conservation of Type Material:Smithsonian
Year of Discovery:1982
Geological Setting of type material:Vanadium ore

Physical Properties of Stanleyite

Diaphaneity (Transparency):Transparent
Colour:Light blue to greenish blue
Streak:white
Hardness (Mohs):1 - 1½
Density (measured):1.95 g/cm3
Density (calculated):2.01 g/cm3

Crystallography of Stanleyite

Crystal System:Orthorhombic
Cell Parameters:a = 12.12Å, b = 9.71Å, c = 14.92Å
Ratio:a:b:c = 1.248 : 1 : 1.537
Unit Cell Volume:V 1,755.86 ų (Calculated from Unit Cell)
Z:8
Morphology:Minute plates
Comment:May be orthorhombic, monoclinic or triclinic

Optical Data of Stanleyite

Type:Biaxial (+)
RI values: nα = 1.505 nβ = 1.519 nγ = 1.533
2V:Calculated: 88°
Maximum Birefringence:δ = 0.028

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:relatively weak
Pleochroism:Visible
Comments:X=Y= blue
Z= very pale blue

Chemical Properties of Stanleyite

Formula:
(V
4+
 
O)[SO
 
4
] · 6H
 
2
O
Essential elements:H, O, S, V
All elements listed in formula:H, O, S, V

Relationship of Stanleyite to other Species

Common Associates:
PatrónitePyriteAlum-(K)Quartz
Related Minerals - Nickel-Strunz Grouping):

- +
7.DE.05Mangazeite
Al
 
2
[(OH)
 
4
|SO
 
4
] · 3H
 
2
O
7.DE.10Carbonatecyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|(CO
 
3
,SO
 
4
)] · 2H
 
2
O
7.DE.10Cyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|SO
 
4
] · 2H
 
2
O
7.DE.10UKI-1975-(SO:AlCu)
Cu, Al, SO4, H2O
7.DE.15Schwertmannite
Fe
3+
16
O
 
16
(OH,SO
 
4
)
 
12-13
 · 10-12H
 
2
O
7.DE.20Tlalocite
Cu
 
10
Zn
 
6
(TeO
 
3
)(TeO
 
4
)
 
2
Cl(OH)
 
25
·27H
 
2
O
7.DE.25Utahite
Cu
 
5
Zn
 
3
[(OH)
 
2
|TeO
 
4
]
 
4
 · 7H
 
2
O
7.DE.35Coquandite
Sb
 
6
[O
 
8
|SO
 
4
] · H
 
2
O
7.DE.40Osakaite
Zn
 
4
(SO
 
4
)(OH)
 
6
 ·5H
 
2
O
7.DE.45Wilcoxite
MgAl[F|(SO
 
4
)
 
2
] · 18H
 
2
O
7.DE.55Mcalpineite
Cu
 
3
[TeO
 
6
] · H
 
2
O
7.DE.60Hydrobasaluminite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 12-36H
 
2
O
7.DE.65Zaherite
Al
 
12
[(OH)
 
26
|(SO
 
4
)
 
5
] · 20H
 
2
O
7.DE.70Lautenthalite
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
·3H
 
2
O
7.DE.75Camerolaite
Cu
 
4
Al
 
2
[(OH)
 
10
|CO
 
3
|(HSbO
 
4
,SO
 
4
)] · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.8.1Klebelsbergite
Sb
 
4
[O
 
4
|(OH)
 
2
|SO
 
4
]
25.8.2Coquandite
Sb
 
6
[O
 
8
|SO
 
4
] · H
 
2
O
25.8.3Peretaite
Ca(SbO)
 
4
[(OH)|SO
 
4
]
 
2
 · 2H
 
2
O
25.8.4Cannonite
Bi
 
2
[O|(OH)
 
2
|SO
 
4
]
25.8.5Minasragrite
(V
4+
 
O)[SO
 
4
] · 5H
 
2
O
25.8.7Redingtonite
(Fe
2+
 
,Mg,Ni)(Cr,Al)
 
2
(SO
 
4
)
 
4
·22H
 
2
O
25.8.8Meta-uranopilite
(UO
 
2
)
 
6
[(OH)
 
10
|SO
 
4
] · 5H
 
2
O
25.8.9Uranopilite
(UO
 
2
)
 
6
[(OH)
 
10
|SO
 
4
] · 12H
 
2
O
25.8.10Natrozippeite
Na
 
4
(UO
 
2
)
 
6
[(OH)
 
10
|(SO
 
4
)
 
3
] · 4H
 
2
O
25.8.11Zippeite
K
 
4
(UO
 
2
)
 
6
[(OH)
 
10
|(SO
 
4
)
 
3
] · 4H
 
2
O
25.8.12Johannite
Cu(UO
 
2
)
 
2
[OH|SO
 
4
]
 
2
 · 8H
 
2
O
25.8.13Magnesiozippeite
Mg(UO
 
2
)
 
2
(SO
 
4
)(OH)
 
4
·1.5H
 
2
O
25.8.14Zinczippeite
Zn
 
2
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
·16H
 
2
O

Other Names for Stanleyite

Synonyms:
IMA1980-042
Other Languages:
German:Stanleyit
Spanish:Stanleyita

Other Information

Other Information:Easily 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 Stanleyite

Reference List:Mineralogical Magazine (1982): 45: 163-166.

American Mineralogist (1983): 68: 644-645.

Acta Crystallographica: B36: 2873-2880.

Internet Links for Stanleyite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Stanleyite details from Handbook of Mineralogy (PDF)
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    Localities for Stanleyite

    Hide Locality List
    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.
    (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.
    Peru
     
    • Pasco Department
      • Daniel Alcides Carrión Province
        • Cerro de Pasco
          • Junín
    		Min.Mag.(1928) 45, 163
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 26th Oct 2009 23:21:21