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Lahnsteinite

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Formula:
Zn4(SO4)(OH)6 · 3H2O
System:
Triclinic
Colour:
colorless
Hardness:
Name:
It was named after the town of Lahnstein, which is close to the Friedrichssegen Mine.
Chemically related to namuwite and osakaite; may originate as a dehydration product of osakaite. Natural analogue of trihydrate zinc sulfate.


Classification of Lahnsteinite

Approved
Approval Year:
2012

Physical Properties of Lahnsteinite

Colour:
colorless
Hardness (Mohs):
Tenacity:
Flexible
Cleavage:
Perfect
perfect micalike cleavage parallel to (001) and imperfect cleavage in a few directions nearly perpendicular to (001).
Density:
2.98(2) g/cm3 (Measured)    2.995 g/cm3 (Calculated)

Optical Data of Lahnsteinite

Type:
Biaxial (-)
RI values:
nα = 1.568(2) nβ = 1.612(2) nγ = 1.613(2)
2V:
Measured: 18° (3), Calculated: 17°
Max Birefringence:
δ = 0.045
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Lahnsteinite

Formula:
Zn4(SO4)(OH)6 · 3H2O
IMA Formula:
Zn4(SO4)(OH)6 · 3H2O
Elements listed in formula:

Crystallography of Lahnsteinite

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Space Group Setting:
P1
Cell Parameters:
a = 8.3125(6) Å, b = 14.545(1) Å, c = 18.504(2) Å
α = 89.71(1)°, β = 90.05(1)°, γ = 90.13(1)°
Ratio:
a:b:c = 0.572 : 1 : 1.272
Unit Cell Volume:
V 2,237.20 ų (Calculated from Unit Cell)
Z:
8
X-Ray Powder Diffraction Data:
d-spacingIntensity
9.30 (100)
4.175 (18)
3.476 (19)
3.290 (19)
2.723 (57)
2.624 (36)
2.503 (35)
1.574 (25)

Type Occurrence of Lahnsteinite

General Appearance of Type Material:
tabular crystals up to 0.7 mm across
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4252/1
Geological Setting of Type Material:
Oxidation zone of quartz-siderite veins.
Associated Minerals at Type Locality:

Other Names for Lahnsteinite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Lahnsteinite

Reference List:
Bear, I.J., Grey, I.E., Madsen, I.C., Newnham, I.E., Rogers, L.J. (1986): Structures of the basic zinc sulfates 3Zn(OH)2•ZnSO4•mH2O, m = 3 and 5. Acta Crystallographica, B42, 32-39.

Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Pekov, I.V., Belakovskiy, D.I. , Blass, G., Möhn, G. (2012) Lahnsteinite, IMA 2012-002. CNMNC Newsletter No. 13, June 2012, page 813; Mineralogical Magazine, 76, 807-817.

Rastsvetaeva, R.K., Aksenov, S.M.,Chukanov, N.V., and I. A. Verin (2012): Crystal Structure of a New Mineral Lahnsteinite, Zn4(SO4)(OH)6 · 3H2O. Kristallografia 57(5), 820-824.

Rastsvetaeva, R.K., Aksenov, S.M.,Chukanov, N.V., and I. A. Verin (2012): Crystal Structure of a New Mineral Lahnsteinite, Zn4(SO4)(OH)6 · 3H2O. Crystallography Reports 57(5), 737-741. [English translation]

N.V. Chukanov, R.K. Rastsvetaeva, S.M. Aksenov, I.V. Pekov, D.I. Belakovskiy, G. Blass, and G. Mohn (2013) Lahnsteinite, Zn4(SO4)(OH)6•3H2O, a new mineral species from the Friederichssegen Mine, Germany. Zap. Ross. Mineral. Obshch., 142, 39-46 (in Russian, English abstract). [Engl. transl.: Geology of Ore Deposits, 55, 663-668.]

Internet Links for Lahnsteinite

mindat.org URL:
https://www.mindat.org/min-42746.html
Please feel free to link to this page.

Localities for Lahnsteinite

This 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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • Rhineland-Palatinate
    • Lahn valley
      • Bad Ems District
        • Frücht
Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Pekov, I.V., Belakovskiy, D.I. , Blass, G., Möhn, G. (2012) Lahnsteinite, IMA 2012-002. CNMNC Newsletter No. 13, June 2012, page 813; Mineralogical Magazine, 76, 807-817; N.V. Chukanov, R.K. Rastsvetaeva, S.M. Aksenov, I.V. Pekov, D.I. Belakovskiy, G. Blass, and G. Mohn (2013) Lahnsteinite, Zn4(SO4)(OH)6•3H2O, a new mineral species from the Friederichssegen Mine, Germany. Zap. Ross. Mineral. Obshch., 142, 39-46 (in Russian, English abstract). [Engl. transl.: Geology of Ore Deposits, 55, 663-668.]
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
            • Hilarion area
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Originally obtained as "goslarite"; visually identical material was SXRD-analysed by Uwe Kolitsch. For details see Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
USA
 
  • California
    • Inyo Co.
      • Inyo Mts (Inyo Range)
        • Malpais Mesa
Kampf, A. R., Mills, S. J., & Nash, B. P. (2016). PREPUBLICATION: Pauladamsite, Cu4 (SeO3)(SO4)(OH) 4· 2H2O, a new mineral from the Santa Rosa mine, Darwin district, California, USA. Mineralogical Magazine.
Mineral and/or Locality  
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