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Leogangite

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About LeogangiteHide

Formula:
Cu10(AsO4)4(SO4)(OH)6 · 8H2O
Colour:
green with a bluish tint
Lustre:
Vitreous
Specific Gravity:
3.55 (Calculated)
Crystal System:
Monoclinic
Name:
For the type locality in several mines at Schwarzleograben, Hütten, Leogang, Saalfelden, Salzburg, Austria.
Closely related to Unnamed (Leogangite-related mineral) with which it is easily confused.



Classification of LeogangiteHide

Approved
Approval Year:
1998
8.CC.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
C : With only medium-sized cations, RO4:H2O = 1:1.5

Physical Properties of LeogangiteHide

Vitreous
Transparency:
Transparent
Colour:
green with a bluish tint
Streak:
light green
Cleavage:
Perfect
parallel to (100)
Density:
3.55 g/cm3 (Calculated)

Optical Data of LeogangiteHide

Type:
Biaxial (-)
RI values:
nω = 1.590 nε = 1.740 n = 1.744
2V:
Measured: 182°
Max Birefringence:
δ = 0.150
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Comments:
Blue-green to pale green.

Chemical Properties of LeogangiteHide

Formula:
Cu10(AsO4)4(SO4)(OH)6 · 8H2O
Common Impurities:
Si

Crystallography of LeogangiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 21.770(7) Å, b = 12.327(4) Å, c = 10.720(3) Å
β = 92.85(1)°
Ratio:
a:b:c = 1.766 : 1 : 0.87
Unit Cell V:
2873 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.85 Å(100)
5.44 Å(50)
3.625 Å(50)
3.090 Å(40)
2.630 Å(60)

Type Occurrence of LeogangiteHide

General Appearance of Type Material:
Aggregates of thin tabular crystals, flattened on {100} and elongated along [010], measuring up to 0.1 mm in length, 0.05 mm in width and 0.01 mm in thickness.
Geological Setting of Type Material:
Alteration product of arsenic-rich fahlore in vugs of a tennantite-bearing dolomite breccia, intergrown with olivenite and malachite.
Associated Minerals at Type Locality:

Synonyms of LeogangiteHide

Other Language Names for LeogangiteHide

German:Leogangit
Simplified Chinese:水羟硫砷铜石
Traditional Chinese:水羥硫砷銅石

Related Minerals - Nickel-Strunz GroupingHide

8.CC.05Garyansellite(Mg,Fe)3(PO4)2(OH,O) · 1.5H2OOrth. mmm (2/m 2/m 2/m)
8.CC.05Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
8.CC.05LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
8.CC.05Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
8.CC.05Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
8.CC.10KaatialaiteFe(H2AsO4)3 · 5H2OMon. 2/m

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 LeogangiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lengauer, C.L., Giester, G. and Kirchner, E. (1998) Cu10(AsO4)4(SO4)(OH)6.8H2O, ein neues Mineral aus Leogang, Österreich. Mitteilungen der Österreichischen Mineralogischen Gesellschaft: 143: 325-327. (in German)
Lengauer, C.L., Giester, G., Kirchner, E. (2004) Leogangite, Cu10(AsO4)4(SO4)(OH)6.8H2O, a new mineral from the Leogang mining district, Salzburg province, Austria. Mineralogy and Petrology: 81: 187-201.

Internet Links for LeogangiteHide

Localities for LeogangiteHide

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.
Austria
 
  • Carinthia
    • Villach-Land District
      • Finkenstein am Faaker See
        • Mallestiger Mittagskogel
G.Indra
  • Salzburg
    • Zell am See District
      • Leogang
        • Hütten
          • Schwarzleograben
            • Inschlag Alp
C.L. Lengauer, G. Giester, E. Kirchner: Mineralogy and Petrology 81:187-201 (2004)
            • Schwarzleo mining district
R.Poeverlein (2016)
C.L. Lengauer, G. Giester, E. Kirchner: Mineralogy and Petrology 81:187-201 (2004)
Poeverlein, R. (2008): Euchroit und seine Begleiter vom prähistorischen Bergbau, Leogang, Österreich. Lapis, 33 (5), 13-22.
            • Vogel Alp
Putz, H., Lechner, A., Poeverlein, R. (2005): Leogangit von der Vogelhalt bei Leogang, Salzburg. Lapis 30 (10), 53-55; 90; Brent Thorne collection
  • Tyrol
    • Kufstein District
      • Brixlegg
        • Geyer - Silberberg District
          • Silberberg
            • West slope ("Am Geyer")
Der Aufschluß (2006)
R. Poeverlein and J. Gröbner (2007): "Der Bergbau Geyer bei Rattenberg in Tirol und seine Mineralien", Lapis 32(2), 34-38.
Schnorrer, G. & Poeverlein, R. (2008): Schwaz-Brixlegger Fundstellen. 6. Die Minerale des Gratlspitz bei Brixlegg in Tirol. Aufschluss 59, 7-28.
C.Auer (2013)
        • St Gertraudi
          • Großkogel (Reither Kogel)
Putz, H. & Poeverlein, R. (2007): Die Mineralien des Gertraudstollens und seiner Halde in St. Gertraudi, Tirol. Lapis 32 (6), 58-63.
      • Wörgl
        • Wildschönau
          • Thierbach
            • Graschberg
R. Poeverlein, J. Gröbner & U. Kolitsch (2010): Mineralien und Bergbau vom Graschberg bei Thierbach in der Tiroler Wildschönau. Lapis 35 (3), 35-40; 54 (in German).
    • Schwaz District
      • Ringenwechsel mining district
        • Weißer Schrofen
Schnorrer, G., Poeverlein, R. (2007): Die Minerale des Martinstollens am Weißen Schrofen, Der Aufschluss, Vol. 58, 27-40
Germany
 
  • North Rhine-Westphalia
    • Arnsberg
      • Siegen-Wittgenstein
        • Hilchenbach
          • Müsen
Schnorrer, G., Pfeiffer, F. (2008): Leogangit, Cu10[(OH)6|(AsO4)4|(SO4)]•8H2O, ein neues Mineral von der ehemaligen Grube Wildermann in Müsen im Siegerland. Der Aufschluss, 59, 405-408.
Portugal
 
  • Beja
    • Almodôvar
      • Santa Cruz
        • Barrigão Mine
Pedro Alves analytical data
Spain
 
  • Catalonia
    • Girona (Gerona)
      • Ripollès
        • Camprodon
          • Rocabruna
Rosell, J. et al. (2014): UK-112: Leogangita de la mina de les Ferreres, Rocabruna, Camprodon, Girona, Catalunya. Infominer, 61 (3/2014); Uwe Kolitsch (SXRD analysis of Franceso Xavier Ortiz Rua sample)
 
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