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Schmiederite

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Formula:
Pb2Cu2(Se6+O4)(Se4+O3)(OH)4
System:
Monoclinic
Colour:
Bright blue, greenish ...
Name:
For German geographer Oscar Schmieder (1891-1980).
Isostructural with:
Linarite-Chenite Group.

The selenate analogue of munakataite.

Classification of Schmiederite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" 1962
7.BC.65

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Dana 7th ed.:
33.1.1.1
33.1.1.1

33 : SELENATES AND TELLURATES
1 : (AB)m(XO4)pZq
28.2.2

28 : Selenites, Selenates, Tellurites, and Tellurates
2 : Selenates
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http://www.mindat.org/min-3569.html
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First Recorded Occurrence of Schmiederite

Year of Discovery:
1962

Physical Properties of Schmiederite

Colour:
Bright blue, greenish blue

Crystallography of Schmiederite

Crystal System:
Monoclinic
Cell Parameters:
a = 9.92Å, b = 5.71Å, c = 9.36Å
β = 101.86°
Ratio:
a:b:c = 1.737 : 1 : 1.639
Unit Cell Volume:
V 518.86 ų (Calculated from Unit Cell)

Chemical Properties of Schmiederite

Formula:
Pb2Cu2(Se6+O4)(Se4+O3)(OH)4
Essential elements:
All elements listed in formula:

Relationship of Schmiederite to other Species

Other Members of Group:
ChenitePb4Cu(SO4)2(OH)6
LinaritePbCu(SO4)(OH)2
MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4
7.BC.05D'AnsiteNa21Mg(SO4)10Cl3
7.BC.10AluniteKAl3(SO4)2(OH)6
7.BC.10Ammonioalunite(NH4)Al3(SO4)2(OH)6
7.BC.10Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
7.BC.10ArgentojarositeAgFe33+(SO4)2(OH)6
7.BC.10Beaverite-(Cu)Pb(Fe3+,Cu)3(SO4)2(OH)6
7.BC.10DorallchariteTlFe33+(SO4)2(OH)6
7.BC.10HuangiteCa0.5Al3(SO4)2(OH)6
7.BC.10Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
7.BC.10JarositeKFe3+ 3(SO4)2(OH)6
7.BC.10Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
7.BC.10NatroaluniteNaAl3(SO4)2(OH)6
7.BC.10NatrojarositeNaFe3(SO4)2(OH)6
7.BC.10OsarizawaitePb(Al,Cu)3(SO4)2(OH)6
7.BC.10PlumbojarositePb0.5Fe33+(SO4)2(OH)6
7.BC.10Schlossmacherite(H3O)Al3(SO4)2(OH)6
7.BC.10WalthieriteBa0.5Al3(SO4)2(OH)6
7.BC.10Beaverite-(Zn)Pb(Fe23+Zn)(SO4)2(OH)6
7.BC.15Ye'elimiteCa4Al6(SO4)O12
7.BC.20AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3Cl
7.BC.20NabokoiteKCu7(SO4)5(Te4+O3)OCl
7.BC.25ChlorothioniteK2Cu(SO4)Cl2
7.BC.30EuchlorineKNaCu3(SO4)3O
7.BC.30FedotoviteK2Cu3(SO4)3O
7.BC.35KamchatkiteKCu3(SO4)2OCl
7.BC.40PiypiteK2Cu2(SO4)2O
7.BC.45KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2
7.BC.45AlumoklyuchevskiteK3Cu3(Al,Fe3+)(SO4)4O2
7.BC.50CaledonitePb5Cu2(SO4)3(CO3)(OH)6
7.BC.55WherryitePb7Cu2(SO4)4(SiO4)2(OH)2
7.BC.60MammothitePb6Cu4AlSb5+O2(OH)16Cl4(SO4)2
7.BC.65LinaritePbCu(SO4)(OH)2
7.BC.65MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4
7.BC.70ChenitePb4Cu(SO4)2(OH)6
7.BC.75KrivovichevitePb3Al(SO4)(OH)7
7.BC.80AnhydrokainiteKMg(SO4)Cl

Other Names for Schmiederite

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 Schmiederite

Reference List:
American Mineralogist (1964): 49: 1498.

Effenberger, H. (1987) Crystal structure and chemical formula of schmiederite, Pb2Cu2(OH)4(SeO3)(SeO4), with a comparison to linarite, PbCu(OH)2(SO4). Mineralogy and Petrology, 36, 3-12.

American Mineralogist (1999): 84: 922-928.

Mineralogy and Petrology: 75: 69-78.

Internet Links for Schmiederite

Localities for Schmiederite

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.
Argentina
 
  • La Rioja
    • General Lamadrid department
      • Villa Castelli
        • Sierra de Cacho
Paar W H, Topa D, Roberts A C, Criddle A J, Amann G, Sureda R J (2002) The new mineral species brodtkorbite, Cu2HgSe2, and the associated selenide assemblage from Tuminico, Sierra de Cacho, La Rioja, Argentina. The Canadian Mineralogist 40, 225-237
    • Vinchina Department
Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
Am Min 73 (1988), 199, Especies minerales de la Republica Argentina (2002); Sarp, H. & G.Burri, Schweiz. Mineral.Petrogr. Mitt. 67, 219-223(1987)
Bolivia
 
  • Potosí Department
    • Antonio Quijarro Province
[MinRec 21:133]
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • Olomouc Region
      • Javorník (Jauernig)
Sejkora, J., Pauliš, P., Malec, J.: Supergenní selenová mineralizace na uranovém ložisku Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2004, roč. 12, s. 174-179.
Italy
 
  • Sardinia
    • Cagliari Province
      • Villaputzu
Campostrini, I. & Gramaccioli, C. M. (2001): Selenium-rich secondary minerals from the Baccu Locci mine (Sardinia, Italy). Neues Jahrbuch fuer Mineralogie, Abhandlungen 177, 37-59.
    • Sassari Province
      • Ozieri
Olmi F., Sabelli C., Santucci, A., Brizzi, G. (1995): I silicati e i vanadati di Ozieri (SS). Rivista Mineralogica Italiana, 2/1995, 145-160
UK
 
  • England
    • Cornwall
      • Callington District
        • Lezant
Famous British Mineral Localities: Greystone Quarry, Lezant, Cornwall. N Elton, D Green, J Hooper & S Weiss. UK Journal of Mines & Minerals No 24, 2004, pp 9-28
    • Staffordshire
      • Ecton
        • Back of Ecton
S Rust Collection
  • Scotland
    • Dumfries & Galloway (Dumfriesshire)
      • Wanlockhead
BMS Database; Green, D. I. (1987): The minerals of Meadowfoot smelter. UK Journal of Mines and Minerals 2, 3-9.
  • Wales
    • Ceredigion (Dyfed; Cardiganshire)
      • Ceulanymaesmawr
        • Talybont
          • Nant-y-Moch Reservoir area
BMS Database
Cardiff Museum
      • Trefeirig
        • Pen-bont Rhydybeddau
S Rust Collection
      • Upper Llanfihangell-y-Creuddyn
        • Pontrhydygroes
S.Rust collection
    • Powys (Montgomeryshire)
      • Machynlleth
        • Dylife
No reference listed
USA
 
  • Arizona
    • Maricopa Co.
      • Big Horn Mts
        • Osborn District
          • Tonopah
            • Belmont Mountain
Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 7.
  • California
    • Inyo Co.
      • Inyo Mts (Inyo Range)
        • Russ District
          • Reward
Bulletin of the Mineralogical Society of Southern California; Vol. 75 No. 3, March 2005
Mineral and/or Locality  
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