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Susannite

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Frongoch Mine (Bron-y-Goch Mine; Llawynwnwch Mine), Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK
© Steve Rust

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Formula:
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
System:TrigonalColour:Colourless to greenish ...
Lustre:AdamantineHardness:2½ - 3
Name:Named after the type locality, the Susanna Mine, Leadhills, Scotland.
Polymorph of:Leadhillite, Macphersonite


The trigonal dimorph of leadhillite.

A mineral closely related to leadhillite and macphersonite. Tabular forms of susannite are easily confused with leadhillite.

Heating leadhillite causes it to reversibly transform into susannite (Bindi & Menchetti, 2005).

Classification of Susannite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/B.13-70
Nickel-Strunz 10th (pending) edition ID:5.BF.40

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3
Dana 8th edition ID:17.1.3.1

17 : COMPOUND CARBONATES
1 : Miscellaneous
Hey's CIM Ref.:12.2.13

12 : Carbonates with other anions
2 : Carbonates with sulphate
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Type Occurrence of Susannite

Type Locality:Susanna Mine (Glennery Scar Vein; Susanna Vein (Scar Vein); Portobello Vein; Humby Vein; Lead Vein), Leadhills, South Lanarkshire, Strathclyde (Lanarkshire), Scotland, UK
Year of Discovery:1827

Occurrences of Susannite

Geological Setting:Secondary mineral in oxidized zones of hydrothermal lead deposits formed above 80 degrees C.

Physical Properties of Susannite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless to greenish or yellowish
Hardness (Mohs):2½ - 3
Density (calculated):6.52 g/cm3

Crystallography of Susannite

Crystal System:Trigonal
Class (H-M):3 - Pyramidal
Space Group:P3
Cell Parameters:a = 9.07Å, c = 11.57Å
Ratio:a:c = 1 : 1.276
Unit Cell Volume:V 824.62 ų
Z:3
Morphology:Thin hexagonal plates.

Optical Data of Susannite

Type:Uniaxial
Comments:Anomalously biaxial

Chemical Properties of Susannite

Formula:
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
Essential elements:C, H, O, Pb, S
All elements listed in formula:C, H, O, Pb, S

Relationship of Susannite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.BF.05Ferrotychite
Na
 
6
(Fe,Mn,Mg)
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.05Manganotychite
Na
 
6
Mn
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.05Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
5.BF.05Tychite
Na
 
6
Mg
 
2
SO
 
4
(CO
 
3
)
 
4
5.BF.10Bonshtedtite
Na
 
3
Fe
2+
 
[PO
 
4
|CO
 
3
]
5.BF.10Bradleyite
Na
 
3
Mg[PO
 
4
|CO
 
3
]
5.BF.10Crawfordite
Na
 
3
Sr[PO
 
4
|CO
 
3
]
5.BF.10Sidorenkite
Na
 
3
Mn
2+
 
[PO
 
4
|CO
 
3
]
5.BF.15Daqingshanite-(Ce)
(Sr,Ca,Ba)
 
2
(Ce,La)PO
 
4
(CO
 
3
,OH,F)
 
3
5.BF.20Reederite-(Y)
Na
 
15
Y
 
2
[Cl|SO
 
3
F|(CO
 
3
)
 
9
]
5.BF.25Mineevite-(Y)
Na
 
25
Ba(Y,Gd,Dy)
 
2
[F
 
2
|Cl|(SO
 
4
)
 
2
|(HCO
 
3
)
 
4
|(CO
 
3
)
 
11
]
5.BF.30Brianyoungite
Zn
 
3
[(OH)
 
4
|(CO
 
3
,SO
 
4
)]
5.BF.35Philolithite
Pb
 
12
Mn
2+
 
(Mg,Mn
2+
 
)
 
2
(Mn
2+
 
,Mg)
 
4
[O
 
6
|(OH)
 
12
|(CO
 
3
)
 
4
|SO
 
4
|Cl
 
4
]
5.BF.40Leadhillite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
5.BF.40Macphersonite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
12.2.1Burkeite
Na
 
6
CO
 
3
(SO
 
4
)
 
2
12.2.2Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
12.2.3Tychite
Na
 
6
Mg
 
2
SO
 
4
(CO
 
3
)
 
4
12.2.4Motukoreaite
NaMg
 
19
Al
 
12
(CO
 
3
)
 
6.5
(SO
 
4
)
 
4
(OH)
 
54
·28H
 
2
O
12.2.5Ferrotychite
Na
 
6
(Fe,Mn,Mg)
 
2
SO
 
4
(CO
 
3
)
 
4
12.2.6Nakauriite
Cu
 
8
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
4
] · 48H
 
2
O
12.2.7Carbonatecyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|(CO
 
3
,SO
 
4
)] · 2H
 
2
O
12.2.8Rapidcreekite
Ca
 
2
[CO
 
3
|SO
 
4
] · 4H
 
2
O
12.2.9Tatarskite
Ca
 
6
Mg
 
2
(SO
 
4
)
 
2
(CO
 
3
)
 
2
Cl
 
4
(OH)
 
4
·7H
 
2
O
12.2.10Schulenbergite
(Cu,Zn)
 
7
[(OH)
 
10
|(SO
 
4
,CO
 
3
)
 
2
] · 3H
 
2
O
12.2.11Leadhillite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
12.2.12Macphersonite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
12.2.14Wherryite
Pb
 
7
Cu
 
2
(SO
 
4
)
 
4
(SiO
 
4
)
 
2
(OH)
 
2
12.2.15Caledonite
Cu
 
2
Pb
 
5
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
3
]
12.2.16Nasledovite
PbMn
 
3
Al
 
4
(CO
 
3
)
 
4
SO
 
4
O
 
5
·5H
 
2
O
12.2.17Jouravskite
Ca
 
6
Mn
3+
2
[(OH)
 
4
|(SO
 
4
,CO
 
3
)]
 
3
 · 26H
 
2
O
12.2.18Schröckingerite
NaCa
 
3
(UO
 
2
)[F|(CO
 
3
)
 
3
|SO
 
4
] · 10H
 
2
O
12.2.19Manganotychite
Na
 
6
Mn
 
2
SO
 
4
(CO
 
3
)
 
4
12.2.20Hauckite
Fe
3+
3
(Mg,Mn
2+
 
)
 
24
Zn
 
18
[(OH)
 
81
|(CO
 
3
)
 
2
|(SO
 
4
)
 
4
]
12.2.21Paraotwayite
Ni(OH)
 
2-x
(SO
 
4
,CO
 
3
)
 
0.5x
12.2.22Carrboydite
(Ni,Cu)
 
14
Al
 
9
[(OH)
 
43
|(SO
 
4
,CO
 
3
)
 
6
] · 7H
 
2
O
12.2.23Mountkeithite
(Mg,Ni)
 
11
(Fe
3+
 
,Cr
3+
 
,Al)
 
3
[(OH)
 
24
|(SO
 
4
,CO
 
3
)
 
3.5
] · 11H
 
2
O
12.2.24Camerolaite
Cu
 
4
Al
 
2
[(OH)
 
10
|CO
 
3
|(HSbO
 
4
,SO
 
4
)] · 2H
 
2
O

Other Names for Susannite

Other Languages:
German:Susannit
Russian:Сузаннит
Spanish:Susannita

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 Susannite

Reference List:Brooke (1827) Edinburgh New Phil. J.: 3: 117 (as Sulphato-tricarbonate of Lead).

Haidinger (1845) Handbuch bestimm.Min., 1st ed.: 505.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 298-299.

American Mineralogist (1970): 55: 1449.

K. Walenta, U. Kolitsch and T. Gulden (1997): On leadhillite and susannite with special regard to occurrences in the Black Forest. Aufschluss 48 (1), 59-64. (in German)

Steele, I. M., Pluth, J. J. & Livingstone, A. (1999): Crystal structure of susannite, Pb4SO4(CO3)2(OH)2. A trimorph with macphersonite and leadhillite. European Journal of Mineralogy: 11: 493-499.

Bindi, L. & Menchetti, S. (2005): Structural changes accompanying the phase transformation between leadhillite and susannite: A structural study by means of in situ high-temperature single-crystal X-ray diffraction. American Mineralogist 90, 1641-1647.

Internet Links for Susannite

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    Localities for Susannite

    Show Locality List (83 Items)
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