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Pseudograndreefite

Formula:
Pb
 
6
SO
 
4
F
 
10
System:OrthorhombicColour:Colourless
Lustre:Sub-AdamantineHardness:2½
This page provides mineralogical data about Pseudograndreefite.

Classification of Pseudograndreefite

IMA status:Approved 1988
Strunz 8th edition ID:6/B.13-40
Nickel-Strunz 10th (pending) edition ID:7.BD.45

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
Dana 8th edition ID:12.1.3.1

12 : COMPOUND HALIDES
1 : Miscellaneous
Hey's CIM Ref.:26.23

26 : Sulphates with Halide
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Type Occurrence of Pseudograndreefite

Type Locality:Grand Reef Mine (Aravaipa Mine; Lead Jewel Mine; Joe Rubal Mine; Vivian Mine; Calistoga Mining & Development Co. Mine; Bringham Silver and Lead Mine), Laurel Canyon, Grand Reef area, Klondyke, Aravaipa District, Santa Teresa Mts, Graham Co., Arizona, USA
Year of Discovery:1989

Physical Properties of Pseudograndreefite

Lustre:Sub-Adamantine
Colour:Colourless
Hardness (Mohs):2½
Tenacity:Brittle

Crystallography of Pseudograndreefite

Crystal System:Orthorhombic
Cell Parameters:a = 8.51Å, b = 19.57Å, c = 8.49Å
Ratio:a:b:c = 0.435 : 1 : 0.434
Unit Cell Volume:V 1,413.93 ų (Calculated from Unit Cell)

Optical Data of Pseudograndreefite

Type:Biaxial (+)
RI values: nα = 1.864 nβ = 1.865 nγ = 1.873
2V:Measured: 30° , Calculated: 40°
Maximum Birefringence:δ = 0.009

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v

Chemical Properties of Pseudograndreefite

Formula:
Pb
 
6
SO
 
4
F
 
10
Essential elements:F, O, Pb, S
All elements listed in formula:F, O, Pb, S

Relationship of Pseudograndreefite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.BD.05Sulphohalite
Na
 
6
[F|Cl|(SO
 
4
)
 
2
]
7.BD.05Sulfohalite
7.BD.10Galeite
Na
 
15
[F
 
4
|Cl|(SO
 
4
)
 
5
]
7.BD.10Schairerite
Na
 
3
[(F,Cl)|SO
 
4
]
7.BD.15Kogarkoite
Na
 
3
[F|SO
 
4
]
7.BD.20Caracolite
Na
 
3
Pb
 
2
[Cl|(SO
 
4
)
 
3
]
7.BD.20Cesanite
Na
 
3
Ca
 
2
[OH|(SO
 
4
)
 
3
]
7.BD.25Burkeite
Na
 
6
CO
 
3
(SO
 
4
)
 
2
7.BD.30Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
7.BD.35Cannonite
Bi
 
2
[O|(OH)
 
2
|SO
 
4
]
7.BD.40Lanarkite
Pb
 
2
[O|SO
 
4
]
7.BD.45Grandreefite
Pb
 
2
SO
 
4
F
 
2
7.BD.45Sundiusite
Pb
 
10
[O
 
8
|SO
 
4
|Cl
 
2
]
7.BD.50Itoite
Pb
 
3
Ge
4+
 
[O|OH|SO
 
4
]
 
2
7.BD.55Chiluite
Bi
 
6
Mo
 
2
Te
 
2
O
 
21
7.BD.60Hectorfloresite
Na
 
9
[IO
 
3
|(SO
 
4
)
 
4
]
Related Minerals - Hey's Index Grouping:

- +
26.1Kogarkoite
Na
 
3
[F|SO
 
4
]
26.2Sulphohalite
Na
 
6
[F|Cl|(SO
 
4
)
 
2
]
26.3Schairerite
Na
 
3
[(F,Cl)|SO
 
4
]
26.4Galeite
Na
 
15
[F
 
4
|Cl|(SO
 
4
)
 
5
]
26.5Connellite
Cu
 
19
[(OH)
 
32
|SO
 
4
|Cl
 
4
] · 3H
 
2
O
26.6Chlorothionite
K
 
2
Cu[Cl
 
2
|SO
 
4
]
26.7Kamchatkite
KCu
 
3
[O|Cl|(SO
 
4
)
 
2
]
26.8Spangolite
Cu
 
6
Al[(OH)
 
12
|Cl|SO
 
4
] · 3H
 
2
O
26.9Aubertite
CuAl[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
26.10Magnesioaubertite
(Mg,Cu)Al[Cl|(SO
 
4
)
 
2
] · 14H
 
2
O
26.11Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)[F|(SO
 
4
)
 
2
] · 14H
 
2
O
26.12D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
26.13Anhydrokainite
KMgClSO
 
4
26.14Kainite
KMg[Cl|SO
 
4
] · 3H
 
2
O
26.15Mosesite
[Hg
 
2
N]
+
 
(Cl,SO
 
4
,MoO
 
4
) · H
 
2
O
26.16Kleinite
[Hg
 
2
N]
+
3
Cl
 
2
S
 
0.5
 · H
 
2
O
26.17Wilcoxite
MgAl[F|(SO
 
4
)
 
2
] · 18H
 
2
O
26.18Creedite
Ca
 
3
[SO
 
4
|Al
 
2
F
 
8
(OH)
 
2
] · 2H
 
2
O
26.19Lannonite
HCa
 
4
Mg
 
2
Al
 
4
(SO
 
4
)
 
8
F
 
9
·32H
 
2
O
26.20Chukhrovite-(Y)
Ca
 
3
(Y,Ce)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
26.21Chukhrovite-(Ce)
Ca
 
3
(Ce,Y)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
26.22Grandreefite
Pb
 
2
SO
 
4
F
 
2
26.24Sundiusite
Pb
 
10
[O
 
8
|SO
 
4
|Cl
 
2
]
26.25Caracolite
Na
 
3
Pb
 
2
[Cl|(SO
 
4
)
 
3
]
26.26Mammothite
Pb
 
6
Cu
 
4
AlSb[(OH)
 
9
|Cl
 
2
|SO
 
4
]
 
2
26.27Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
[Cl|O
 
3
|(SO
 
4
)
 
5
]
26.28Xitieshanite
Fe
3+
 
[Cl|SO
 
4
] · 6H
 
2
O
26.29Nabokoite
KCu
 
7
Te
4+
 
[Cl|O
 
4
|(SO
 
4
)
 
5
]

Other Names for Pseudograndreefite

Synonyms:
IMA1988-017
Other Languages:
German:Pseudograndreefit
Spanish:Pseudograndreefita

Other Information

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 Pseudograndreefite

Reference List:Kampf, A.R., et al (1989), Grandreefite, pseudograndreefite, laurelite, and aravaipaite: Four new minerals from the Grandreef mine, Graham Co., AZ, American Mineralogist: 74: 927-933.

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Internet Links for Pseudograndreefite

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    Localities for Pseudograndreefite

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    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.
    USA
     
    • Arizona
      • Graham Co.
        • Santa Teresa Mts
          • Aravaipa District
            • Klondyke
              • Grand Reef area
                • Laurel Canyon
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 118, 336; Kampf, A.R., et al (1989), Grandreefite, pseudograndreefite, laurelite, and aravaipaite: Four new minerals from the Grandreef mine, Graham Co., AZ, Am.Min.: 74: 927-933; Min.Rec.: 27: 296.
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