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Pattersonite

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Vereinigung Mine, Eisenbach, Bad Camberg, Taunus Mts, Hesse, Germany
© Stephan Wolfsried

Show Pattersonite Photos (8)
Formula:
PbFe
3+
3
(PO
 
4
)
 
2
(OH)
 
4
{(H
 
2
O)
 
0.5
(OH)
 
0.5
}
 
2
System:TriclinicColour:Dark yellow
Hardness:4
Name:
Named for Arthur Lindo Patterson (1902-1966), innovative crystallographer who devised the well-known Patterson method (Patterson function) used in crystal-structure determination.


Dimorphous with Kintoreite.

Classification of Pattersonite

IMA status:Approved 2005
Nickel-Strunz 10th (pending) edition ID:8.BL.25

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
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Type Occurrence of Pattersonite

Type Locality:Vereinigung Mine, Eisenbach, Bad Camberg, Taunus Mts, Hesse, Germany
General Appearance of Type Material:Indistinct tabular (pinacoidal) crystals up to 0.5 mm in size, which tend to form subparallel to rosette-like intergrowths
Associated Minerals at type locality:
PyromorphiteLimoniteKintoreiteCorkite

Physical Properties of Pattersonite

Lustre:Adamantine
Diaphaneity (Transparency):Translucent
Colour:Dark yellow
Streak:very pale yellow
Hardness (Mohs):4
Hardness (Vickers):VHN100=530(80)
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Poor/Indistinct
one poor cleavage of unknown orientation
Fracture:Conchoidal
Density (measured):4.04 g/cm3
Density (calculated):4.17 g/cm3

Crystallography of Pattersonite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 5.309(1) Å, b = 7.211(1) Å, c = 7.349Å
α = 87.74(3)°, β = 86.38(3)°, γ = 71.40(3)°
Ratio:a:b:c = 0.736 : 1 : 1.019
Unit Cell Volume:V 266.06 ų
Z:1
X-Ray Powder Diffraction:
d-spacingIntensity
4.848 (100)
6.839 (64)
3.547 (57)
3.417 (52)
3.022 (51)
3.667 (47)

Optical Data of Pattersonite

Type:Biaxial (-)
RI values: nα = 1.860(1) nβ = 1.917 nγ = 1.930(1)
2V:Measured: 50° (5)
Maximum Birefringence:δ = 0.070

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:Very strong (r > v)
Pleochroism:Weak
Comments:X = nearly colorless to very pale yellow, Y =pale yellow to yellow, Z = yellow to dark yellow (depending on grain size), with Z > Y > X

Chemical Properties of Pattersonite

Formula:
PbFe
3+
3
(PO
 
4
)
 
2
(OH)
 
4
{(H
 
2
O)
 
0.5
(OH)
 
0.5
}
 
2
Essential elements:Fe, H, O, P, Pb
All elements listed in formula:Fe, H, O, P, Pb

Relationship of Pattersonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BL.05Beudantite
PbFe
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
8.BL.05Corkite
PbFe
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
8.BL.05Hidalgoite
PbAl
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
8.BL.05Hinsdalite
PbAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
8.BL.05Kemmlitzite
(Sr,Ce)Al
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
8.BL.05Orpheite
PbAl
 
3
[(OH)
 
6
|(PO
 
4
,SO
 
4
)
 
2
] (?)
8.BL.05Svanbergite
SrAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
8.BL.05Weilerite
8.BL.05Woodhouseite
CaAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
8.BL.05Gallobeudantite
PbGa
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
8.BL.10Arsenogoyazite
SrAl
 
3
[(OH)
 
5
|(AsO
 
4
)
 
2
] · H
 
2
O
8.BL.10Arsenogorceixite
BaAl
 
3
[(OH)
 
5
|(AsO
 
4
)
 
2
] · H
 
2
O
8.BL.10Arsenocrandallite
(Ca,Sr)Al
 
3
[(OH)
 
5
|(AsO
 
4
,PO
 
4
)
 
2
] · H
 
2
O
8.BL.10Benauite
SrFe
3+
3
[(OH)
 
6
|(HPO
 
4
,PO
 
4
)|(PO
 
4
,SO
 
4
)]
8.BL.10Crandallite
CaAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
8.BL.10Dussertite
BaFe
3+
3
[(OH)
 
5
|(AsO
 
4
)
 
2
]
8.BL.10Eylettersite
(Th,Pb)Al
 
3
[(OH)
 
6
|(PO
 
4
,SiO
 
4
)
 
2
] ?
8.BL.10Gorceixite
BaAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
8.BL.10Goyazite
SrAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
8.BL.10Kintoreite
PbFe
3+
3
[(OH,H
 
2
O)
 
6
|(PO
 
4
)
 
2
]
8.BL.10Philipsbornite
PbAl
 
3
[(OH)
 
5
|(AsO
 
4
)
 
2
] · H
 
2
O
8.BL.10Plumbogummite
PbAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
8.BL.10Segnitite
PbFe
3+
3
[(OH,H
 
2
O)
 
6
|(AsO
 
4
)
 
2
]
8.BL.10Springcreekite
BaV
3+
3
[(OH,H
 
2
O)
 
6
|(PO
 
4
)
 
2
]
8.BL.13Arsenoflorencite-(La)
LaAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
8.BL.13Arsenoflorencite-(Nd)
NdAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
8.BL.13Arsenoflorencite-(Ce)
CeAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
8.BL.13Florencite-(Ce)
CeAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
8.BL.13Florencite-(La)
LaAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
8.BL.13Florencite-(Nd)
NdAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
8.BL.13Waylandite
(Bi,Ca)Al
 
3
[(OH)
 
6
|(PO
 
4
,SiO
 
4
)
 
2
]
8.BL.13Zaïrite
Bi(Fe
3+
 
,Al)
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
8.BL.13Arsenowaylandite
BiAl
 
3
(AsO
 
4
)
 
2
(OH)
 
6
8.BL.13Graulichite-(Ce)
CeFe
3+
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
8.BL.15Viitaniemiite
Na(Ca,Mn
2+
 
)Al[(F,OH)
 
3
|PO
 
4
]

Other Names for Pattersonite

Synonyms:
IMA2005-049
Other Languages:

Other Information

Fluorescence in UV light:none
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 Pattersonite

Reference List:U. Kolitsch, H.-J. Bernhardt, W. Krause and G. Blaß (2005): Triclinic PbFe3(PO4)2(OH)4(H2O,OH)2: a new phosphate mineral from the Taunus, Germany, and its crystal structure. Mitt. Österr. Mineral. Ges. 151, 65. (Poster abstract)

U. Kolitsch, H.-J. Bernhardt, W. Krause and G. Blaß (2008): Pattersonite, PbFe3(PO4)2(OH)4[(H2O)0.5(OH)0.5]2, a new supergene phosphate mineral: description and crystal structure. European J. Mineralogy 20, 281-288.

Jahn, S. (2008): Pattersonit - ein neues Mineral von der Grube Vereinigung bei Eisenbach. Mineralien-Welt 19 (4), 26-29 (in German).

Internet Links for Pattersonite

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    Localities for Pattersonite

    (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.
    Germany
     
    • Hesse
      • Taunus Mts
        • Bad Camberg
          • Eisenbach
    		U. Kolitsch, H.-J. Bernhardt, W. Krause and G. Blaß (2008): Pattersonite, PbFe3(PO4)2(OH)4[(H2O)0.5(OH)0.5]2, a new supergene phosphate mineral: description and crystal structure. European J. Mineralogy 20, 281-288; Jahn, S. (2008): Pattersonit - ein neues Mineral von der Grube Vereinigung bei Eisenbach. Mineralien-Welt 19 (4), 26-29 (in German).
    Mineral and/or Locality
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