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Plumbophyllite

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Formula:
Pb2Si4O10 · H2O
Colour:
pale blue to very light blue-green
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.96
Crystal System:
Orthorhombic
Name:
The mineral is named for its essential Pb content and its silicate sheet structure (Greek φύλλον = leaf).
Structurally related to pentagonite.


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Classification of PlumbophylliteHide

Approved
Approval Year:
2008
9.EA.85

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings

Physical Properties of PlumbophylliteHide

Vitreous
Transparency:
Translucent
Colour:
pale blue to very light blue-green
Streak:
white
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
{100}
Fracture:
Splintery
Density:
3.96(5) g/cm3 (Measured)    3.940 g/cm3 (Calculated)

Optical Data of PlumbophylliteHide

Type:
Biaxial (+)
RI values:
nα = 1.674(2) nβ = 1.684(2) nγ = 1.708(2)
2V:
Measured: 66° , Calculated: 66.5°
Max Birefringence:
δ = 0.034
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
Strong r > v dispersion
Pleochroism:
Non-pleochroic

Chemical Properties of PlumbophylliteHide

Formula:
Pb2Si4O10 · H2O
IMA Formula:
Pb2Si4O10 · H2O

Crystallography of PlumbophylliteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Cell Parameters:
a = 13.2083 Å, b = 9.7832 Å, c = 8.6545 Å
Ratio:
a:b:c = 1.35 : 1 : 0.885
Unit Cell V:
1,118.33 ų (Calculated from Unit Cell)
Morphology:
Plumbophyllite forms prismatic crystals, elongate on c, with wedge-shaped terminations

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.883 (97)
6.625 (35)
4.897 (38)
3.623 (100)
3.166 (45)
2.938 (57)
2.555 (51)
2.243 (50)

Type Occurrence of PlumbophylliteHide

Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, catalog numbers 58829, 58830, 58831, and 58832 (cotypes)
Geological Setting of Type Material:
Oxidation zone
Associated Minerals at Type Locality:

Synonyms of PlumbophylliteHide

Other Language Names for PlumbophylliteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Plumbotsumite2 photos of Plumbophyllite associated with Plumbotsumite on mindat.org.
Perite1 photo of Plumbophyllite associated with Perite on mindat.org.
Cerussite1 photo of Plumbophyllite associated with Cerussite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EA.05CuprorivaiteCaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05GillespiteBaFe2+Si4O10Tet.
9.EA.05EffenbergeriteBaCuSi4O10Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc
9.EA.05WesselsiteSrCuSi4O10Tet.
9.EA.10EkaniteCa2ThSi8O20Tet. 4 2 2 : I4 2 2
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
9.EA.20MagadiiteNa2Si14O29 · 11H2OMon.
9.EA.25DalyiteK2ZrSi6O15Tric.
9.EA.25DavaniteK2TiSi6O15Tric.
9.EA.30Sazhinite-(Ce)Na2CeSi6O14•6H2O
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2OOrth. mm2 : Pmm2
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2OMon.
9.EA.40OkeniteCa10Si18O46 · 18H2OTric. 1 : P1
9.EA.45NekoiteCa3Si6O15·7H2OTric. 1 : P1
9.EA.50CavansiteCa(VO)Si4O10 · 4H2OOrth. mmm (2/m 2/m 2/m)
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2OOrth. mm2
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2OMon.
9.EA.65NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2OTric.
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2OMon. 2/m : B2/b
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4Mon. 2/m : B2/b

Fluorescence of PlumbophylliteHide

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 PlumbophylliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Anthony R. Kampf, George R. Rossman, and Robert M. Housley (2009) Plumbophyllite, a new species from the Blue Bell claims near Baker, San Bernardino County, California. American Mineralogist, 94, 1198–1204.

Internet Links for PlumbophylliteHide

Localities for PlumbophylliteHide

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.
Australia
 
  • Queensland
    • Mount Isa City Shire
      • Mount Isa
        • Mount Isa Mines
R Bottrill (unpub data)
USA (TL)
 
  • California
    • San Bernardino Co.
      • Silver Lake District
        • Soda Mts
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
American Mineralogist, Volume 94, pages 1198–1204, 2009
Mineral and/or Locality  
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