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Lautenthalite

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Brynarian Mine (Cardigan Bay Consols Mine), Tre-Taliesin, Llangynfelyn, Ceredigion (Dyfed; Cardiganshire), Wales, UK
© Steve Rust

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Formula:
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
·3H
 
2
O
System:MonoclinicColour:Green, bright blue
Hardness:2½
Name:From the type occurrence at Lauthenthal.


Devilline Group.

The lead analogue of devilline and campigliaite.
Difficult to distinguish from both without analytical methods.

Found at several slag localities.

Classification of Lautenthalite

IMA status:Approved
Strunz 8th edition ID:6/D.19-32
Nickel-Strunz 10th (pending) edition ID:7.DE.70

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:31.6.1.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
6 : (AB)5(XO4)2Zq·xH2O
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Type Occurrence of Lautenthalite

Type Locality:Lautenthal smelter (slag locality), Lautenthal, Harz Mts, Lower Saxony, Germany
Year of Discovery:1993
Geological Setting of type material:Smelter slag.

Occurrences of Lautenthalite

Geological Setting:Oxidation zone of Pb-Cu deposits.

Physical Properties of Lautenthalite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Green, bright blue
Streak:White
Hardness (Mohs):2½
Cleavage:Distinct/Good
Good on {001} and {010}
Density (calculated):3.84 g/cm3

Crystallography of Lautenthalite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 21.642(8) Å, b = 6.04(2) Å, c = 22.544(8) Å
β = 108.2(1)°
Ratio:a:b:c = 3.583 : 1 : 3.732
Unit Cell Volume:V 2,799.47 ų (Calculated from Unit Cell)
Z:8
Morphology:Tabular crystals, sheaflike or irregular aggregates.
Twinning:Polysynthetic on {100}

Optical Data of Lautenthalite

Type:Biaxial (-)
RI values: nα = 1.659(2) nβ = 1.703(2) nγ = 1.732(2)
2V:Measured: 78° to 79°, Calculated: 78°
Maximum Birefringence:δ = 0.073

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r < v strong
Pleochroism:Weak
Comments:X= pale blue
Y=Z= blue

Chemical Properties of Lautenthalite

Formula:
PbCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
·3H
 
2
O
Essential elements:Cu, H, O, Pb, S
All elements listed in formula:Cu, H, O, Pb, S

Relationship of Lautenthalite to other Species

Member of Group:
Devilline Group:
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.50Stanleyite
(V
4+
 
O)[SO
 
4
] · 6H
 
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.75Camerolaite
Cu
 
4
Al
 
2
[(OH)
 
10
|CO
 
3
|(HSbO
 
4
,SO
 
4
)] · 2H
 
2
O

Other Names for Lautenthalite

Synonyms:
IMA1983-029
Other Languages:
German:Lautenthalit
Spanish:Lautenthalita

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 Lautenthalite

Reference List:Medenbach, O., Gebert, W. (1993): Lautenthalite, PbCu4[(OH)6|(SO4)2]•3H2O, the Pb analogue of devillite: A new mineral from the Harz mountains, Germany. Neues Jahrbuch für Mineralogie, Monatshefte, 1993, 401-407. [Abstract in American Mineralogist (1994): 79: 570].

C. Sabelli and P. F. Zanazzi (1972): The crystal structure of devillite. Acta Crystallogr., B28, 1182-1189.

Internet Links for Lautenthalite

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    Localities for Lautenthalite

    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.
    Austria
     
    • Styria
      • Niedere Tauern Mts
        • Öblarn
          • Walchen
    		Schebesta, K. (1992): Schlackenminerale aus der Walchen bei Öblarn. Lapis 17 (2), 19-30; 50.
    France
     
    • Languedoc-Roussillon
      • Lozère
    		No reference listed
    Germany
     
    • Lower Saxony
      • Harz Mts
        • Lautenthal
    		O. Medenbach et al.: N. Jb. Mineral. Mh. 401-407 (1993)
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Plaka
            • Plaka Mines
    		No reference listed
          • Sounion Area
            • Agia Varvara Mines (St Barbara Mines)
    		No reference listed
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Braithwaite District
            • Coledale
    		[UKJMM 18:9]
    • Scotland
      • Dumfries & Galloway (Dumfries-shire)
        • Wanlockhead
    		BMS Database; American Mineralogist, Volume 79, pages 570-574, 1994
    • Wales
      • Ceredigion (Dyfed; Cardiganshire)
        • Ceulanymaesmawr
          • Talybont
            • Nant-y-Moch Reservoir area
    UKJMM No5
        • Cwmrheidol
          • Ystumtuen
    		[UKJMM No.15, p23)
        • Llangynfelyn
          • Tre-Taliesin
    		S Rust Collection
        • Trefeirig
          • Pen-bont Rhydybeddau
    		S Rust collection
        • Upper Llanfihangell-y-Creuddyn
          • Pontrhydygroes
    		UKJMM 17
        • Ysbyty Ystwyth
    		BMS Database
      • Powys (Montgomeryshire)
        • Machynlleth
          • Dylife
    Mineral and/or Locality
    Google
     
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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: 25th Oct 2009 12:52:34