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Plumbotsumite

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About PlumbotsumiteHide

Formula:
Pb13(CO3)6(Si10O27) · 3H2O
Colour:
Colourless
Hardness:
2
Crystal System:
Orthorhombic
Name:
Named for its composition, which includes lead (plumbo), and its type locality, Tsumeb, Namibia.
New formula according to Cooper (pers. comm.), in Marty et al. (2010).
Originally given formula was Pb5Si4O8(OH)10.


Classification of PlumbotsumiteHide

Approved
First Published:
1982
9.HH.20

9 : SILICATES (Germanates)
H : Unclassified silicates
H : With Pb
78.1.7.1

78 : Unclassified Silicates
1 : Miscellaneous
14.13.2

14 : Silicates not Containing Aluminum
13 : Silicates of Pb

Pronounciation of PlumbotsumiteHide

Pronounciation:
PlayRecorded byCountry
Debbie WoolfUnited Kingdom

Physical Properties of PlumbotsumiteHide

Transparency:
Transparent
Colour:
Colourless
Hardness:
Cleavage:
Perfect
{001}

Optical Data of PlumbotsumiteHide

Type:
Biaxial (-)
RI values:
nα = 1.922 nβ = 1.933 nγ = 1.938
2V:
Measured: 32° , Calculated: 66°
Max Birefringence:
δ = 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v strong

Chemical Properties of PlumbotsumiteHide

Formula:
Pb13(CO3)6(Si10O27) · 3H2O
IMA Formula:
Pb5Si4O8(OH)10

Crystallography of PlumbotsumiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 15.87 Å, b = 9.26 Å, c = 29.36 Å
Ratio:
a:b:c = 1.714 : 1 : 3.171
Unit Cell V:
4,314.63 ų (Calculated from Unit Cell)
Twinning:
V-shaped penetration twins.

Type Occurrence of PlumbotsumiteHide

Place of Conservation of Type Material:
University of Stuttgart, Germany.
Smithsonian Institution, Washington.
Reference:
Keller, P., Dunn, P.J. (1982) Plumbotsumite, Pb5(OH)10Si4O8, a new lead silicate from Tsumeb, Namibia. Chemie der Erde: 41: 1-6.

Synonyms of PlumbotsumiteHide

Other Language Names for PlumbotsumiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Plumbotsumite associated with PlumbophyllitePb2Si4O10 · H2O
2 photos of Plumbotsumite associated with MimetitePb5(AsO4)3Cl
1 photo of Plumbotsumite associated with PeritePbBiClO2
1 photo of Plumbotsumite associated with FluoriteCaF2

Related Minerals - Nickel-Strunz GroupingHide

9.HH.05MacquartiteCu2Pb7(CrO4)4(SiO4)2(OH)2Mon.
9.HH.10LuddeniteCu2Pb2Si5O14 · 4H2OMon.
9.HH.15CreaseyitePb2Cu2Fe3+2(Si4.67Al0.33)O15.33(OH)3 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
9.HH.25MolybdophyllitePb8Mg9[Si10O28(OH)8O2(CO3)3] · H2OMon. 2 : B2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.13.1AlamositePbSiO3Mon.
14.13.3LuddeniteCu2Pb2Si5O14 · 4H2OMon.
14.13.4MolybdophyllitePb8Mg9[Si10O28(OH)8O2(CO3)3] · H2OMon. 2 : B2
14.13.5MargarosanitePb(Ca,Mn2+)2(Si3O9)Tric. 1 : P1
14.13.6GanomalitePb9Ca5Mn(Si2O7)4(SiO4)OHex.
14.13.7KentrolitePb2Mn3+2(Si2O7)O2Orth. mmm (2/m 2/m 2/m) : Pbcm
14.13.8BarysilitePb8Mn2+[Si2O7]3Trig.
14.13.9MelanotekitePb2Fe3+2(Si2O7)O2Orth. 2 2 2 : C2 2 21
14.13.10CreaseyitePb2Cu2Fe3+2(Si4.67Al0.33)O15.33(OH)3 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Notes:
Dissolves with difficulty in hot HN03.
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 PlumbotsumiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Keller, P., Dunn, P.J. (1982) Plumbotsumite, Pb5(OH)10Si4O8, a new lead silicate from Tsumeb, Namibia. Chemie der Erde: 41: 1-6.
Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982) New mineral names. American Mineralogist: 67: 1074-1082.
Marty, J., Kampf, A.R., Housley, R.M., Mills, S.J., Weiß, S. (2010) Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexiko (USA). Lapis: 35(12): 42-51; 66.
Dörsam, G., Liebscher, A., Wunder, B., Franz, G., Gottschalk, M. (2011) Synthesis of Pb-zoisite and Pb-lawsonite. Neues Jahrbuch für Mineralogie, Abhandlungen: 188: 99-110.

Internet Links for PlumbotsumiteHide

Localities for PlumbotsumiteHide

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.
France
 
  • Bourgogne-Franche-Comté
    • Saône-et-Loire
      • Saint-Léger-sous-Beuvray
        • Saint-Prix
Vincent Bourgoin collection.
Namibia (TL)
 
  • Oshikoto Region
    • Tsumeb
Chemie der Erde (1982) 41, 1
USA
 
  • Arizona
    • Pinal Co.
      • Mammoth Mining District
        • Tiger
          • St. Anthony deposit
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 332.
  • California
    • San Bernardino Co.
      • Silver Lake Mining District
        • Soda Mts
          • Baker
            • Otto Mountain
Collected by and in the collection of Brent Thorne.
Collected by and in the collection of Brent Thorne. EDS confirmed by Bob Housley.
Collected by and in the collection of Brent Thorne.
Collected by and in the collection of Brent Thorne.
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
Collected by and in the collection of Brent Thorne. SEM EDS and XRD confirmed.; American Mineralogist, Volume 94, pages 1198–1204, 2009
 
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