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Lemanskiite

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Chet Lemanski
Formula:
NaCaCu5(AsO4)4Cl · 5H2O
Colour:
Sky Blue
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
3.78
Crystal System:
Tetragonal
Name:
Named for Chester (Chet) S. Lemanski, Jr. (b. 1947), a New Jersey, USA, collector and former President of the Franklin-Ogdensburg Mineralogical Society, board member and former Vice President of the Franklin Mineral Museum, former hard rock miner (Sterling Mine, NJ) and professional investigator, now retired.
Dimorph of:
Masses and aggregated groups of crystals in and on matrix; massive, filling spaces between breccia fragments. Easy to confuse with lavendulan, of which it is a polymorph. May occur simultaneously with lavendulan.


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Classification of LemanskiiteHide

Approved
Approval Year:
1999
8.DG.05

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
G : With large and medium-sized cations, (OH, etc.):RO4< 0.5:1

Physical Properties of LemanskiiteHide

Vitreous
Transparency:
Translucent
Colour:
Sky Blue
Streak:
Sky blue
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
(001)
Parting:
None.
Fracture:
Irregular/Uneven
Density:
3.78 g/cm3 (Measured)    3.86 g/cm3 (Calculated)

Optical Data of LemanskiiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.749 nε = 1.647
Max Birefringence:
δ = 0.102
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Strong
Comments:
O dark green-blue, E light blue-green

Chemical Properties of LemanskiiteHide

Formula:
NaCaCu5(AsO4)4Cl · 5H2O

Crystallography of LemanskiiteHide

Crystal System:
Tetragonal
Class (H-M):
4 2 2 - Trapezohedral
Space Group:
P41 2 2
Cell Parameters:
a = 9.9758 Å, c = 36.714 Å
Ratio:
a:c = 1 : 3.68
Unit Cell V:
3653.6 ų
Z:
8
Morphology:
Thin tetragonal plates. Crystals bent to the angstrom level.
Twinning:
None mentioned.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.60 (9)
9.18 (100)
4.59 (32)
4.17 (10)
3.06 (15)
2.924 (5)
2.606 (6)
Comments:
Possibly affected by preferred orientation.

Type Occurrence of LemanskiiteHide

General Appearance of Type Material:
Rosette-shaped aggregates of thin platey crystals.
Geological Setting of Type Material:
Occurs in the oxidized zone of an enargite-rich gold deposit in an arid environment.
Associated Minerals at Type Locality:

Synonyms of LemanskiiteHide

Other Language Names for LemanskiiteHide

German:Lemanskiit
Simplified Chinese:四方氯砷钠铜石
Spanish:Lemanskiita
Traditional Chinese:四方氯砷鈉銅石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Lammerite10 photos of Lemanskiite associated with Lammerite on mindat.org.
Chenevixite3 photos of Lemanskiite associated with Chenevixite on mindat.org.
Lavendulan2 photos of Lemanskiite associated with Lavendulan on mindat.org.
Azurite1 photo of Lemanskiite associated with Azurite on mindat.org.
Malachite1 photo of Lemanskiite associated with Malachite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DG.05LavendulanNaCaCu5(AsO4)4Cl · 5H2OMon. 2/m
8.DG.05SampleiteNaCaCu5(PO4)4Cl · 5H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DG.05ShubnikoviteCa2Cu8(AsO4)6(OH)Cl · 7H2O
8.DG.05ZdenĕkiteNaPbCu5(AsO4)4Cl · 5H2OMon. 2/m : P21/b

Fluorescence of LemanskiiteHide

Other InformationHide

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 LemanskiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2006): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral., 44, 523-531.
Giester, Gerald; Uwe Kolitsch; Peter Leverett; Peter Turner; and Peter A. Williams (2007) The crystal structures of lavendulan, sampleite, and a new polymorph of sampleite. European Journal of Mineralogy 19,75-93.

Internet Links for LemanskiiteHide

Localities for LemanskiiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Bolivia
 
  • La Paz Department
    • Aroma Province
      • Laurani District
Kempff, O., Paar, W.H., Tawackoli, S.: "Minerales de Bolivia", 115pp (La Paz, 2009); Paar, W. H., Cooper, M. A., Hawthorne, F. C., Moffatt, E., Gunter, M. E., Roberts, A. C., & Dunn, P. J. (2009). Braithwaiteite, NaCu5 (TiSb) O2 (AsO4) 4 [AsO3 (OH)] 2 (H2O) 8, a new mineral species from Laurani, Bolivia. The Canadian Mineralogist, 47(4), 947-952.
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Miraflores
        • San Juan
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
      • Santa Catalina
        • Guanaco (Huanaco)
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
            • Hilarion area
Mintreasure specimen, ID by Dr. M. Murashko
Iran
 
  • Esfahan Province (Isfahan Province; Aspadana Province)
    • Nain County (Nayin County)
      • Anarak District
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
Spain
 
  • Murcia
    • Mazarrón
      • Pastrana
Ondruš, P., Veselovský, F, Sejkora, J., Skála, R., Pažout, R., Frýda, J., Gabašová, A., Vajdak, J. (2005): Lemanskiite, NaCaCu5(AsO4)4Cl•5H2O, a new mineral species from the Abundancia mine, Chile. Can. Mineral. 44, 523-531.
Mineral and/or Locality  
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