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Stanleyite

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Big Photo

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




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:
QuartzPyritePatróniteAlum-(K)
Related Minerals - Nickel-Strunz Grouping):

- +
7.DE.05Mangazeite
Al
 
2
(SO
 
4
)(OH)
 
4
 · 3H
 
2
O
7.DE.10Carbonatecyanotrichite
Cu
 
4
Al
 
2
(CO
 
3
,SO
 
4
)(OH)
 
12
 · 2H
 
2
O
7.DE.10Cyanotrichite
Cu
 
4
Al
 
2
(SO
 
4
)(OH)
 
12
 · 2H
 
2
O
7.DE.10UKI-1975-(SO:AlCu)
(Cu, Al, SO
 
4
, H
 
2
O)
7.DE.15Schwertmannite
Fe
3+
16
(OH,SO
 
4
)
 
12-13
O
 
16
 · 10-12H
 
2
O
7.DE.20Tlalocite
Cu
 
10
Zn
 
6
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)(OH)
 
25
Cl · 27H
 
2
O
7.DE.25Utahite
Cu
 
5
Zn
 
3
(TeO
 
4
)
 
4
(OH)
 
8
 · 7H
 
2
O
7.DE.35Coquandite
(SbO)
 
6
(SO
 
4
)O
 
2
 · H
 
2
O
7.DE.40Osakaite
Zn
 
4
(SO
 
4
)(OH)
 
6
 · 5H
 
2
O
7.DE.45Wilcoxite
MgAl(SO
 
4
)
 
2
F · 18H
 
2
O
7.DE.55Mcalpineite
Cu
 
3
(Te
6+
 
O
 
6
) · H
 
2
O
7.DE.60Hydrobasaluminite
Al
 
4
(SO
 
4
)(OH)
 
10
 · 12-36H
 
2
O
7.DE.62Volaschioite
Fe
 
4
(SO
 
4
)O
 
2
(OH)
 
6
 · 2H
 
2
O
7.DE.65Zaherite
Al
 
12
(SO
 
4
)
 
5
(OH)
 
26
 · 20H
 
2
O
7.DE.70Lautenthalite
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
 · 3H
 
2
O
7.DE.75Camerolaite
Cu
 
4
Al
 
2
(HSbO
 
4
,SO
 
4
)(CO
 
3
)(OH)
 
10
 · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.8.1Klebelsbergite
(SbO)
 
4
(SO
 
4
)(OH)
 
2
25.8.2Coquandite
(SbO)
 
6
(SO
 
4
)O
 
2
 · H
 
2
O
25.8.3Peretaite
Ca(SbO)
 
4
(SO
 
4
)
 
2
(OH)
 
2
 · 2H
 
2
O
25.8.4Cannonite
Bi
 
2
(SO
 
4
)O(OH)
 
2
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
(SO
 
4
)(OH)
 
10
 · 5H
 
2
O
25.8.9Uranopilite
(UO
 
2
)
 
6
(SO
 
4
)O
 
2
(OH)
 
6
 · 14H
 
2
O
25.8.10Natrozippeite
Na
 
4
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
 · 4H
 
2
O
25.8.11Zippeite
K
 
4
(UO
 
2
)
 
6
(SO
 
4
)
 
3
(OH)
 
10
 · 4H
 
2
O
25.8.12Johannite
Cu(UO
 
2
)
 
2
(SO
 
4
)
 
2
(OH)
 
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

Search Engines:
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    • External Links:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Stanleyite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
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    • Localities for Stanleyite

    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.
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    (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
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