Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Plumbophyllite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Pb2Si4O10 · H2O
System:
Orthorhombic
Colour:
pale blue to very light ...
Hardness:
5
Name:
The mineral is named for its essential Pb content and its silicate sheet structure (Greek φύλλον = leaf).
Structurally related to pentagonite.

Classification of Plumbophyllite

Approved 2008
9.EA.85

9 : SILICATES (Germanates)
E : Phyllosilicates
A : Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
mindat.org URL:
http://www.mindat.org/min-38703.html
Please feel free to link to this page.

First Recorded Occurrence of Plumbophyllite

Place of Conservation of First Recorded Material:
Natural History Museum of Los Angeles County, catalog numbers 58829, 58830, 58831, and 58832 (cotypes)
Year of Discovery:
2000
Geological Setting of First Recorded Material:
Oxidation zone

Physical Properties of Plumbophyllite

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

Crystallography of Plumbophyllite

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

Optical Data of Plumbophyllite

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 Plumbophyllite

Formula:
Pb2Si4O10 · H2O
Essential elements:
All elements listed in formula:

Relationship of Plumbophyllite to other Species

9.EA.05CuprorivaiteCaCu[Si4O10]
9.EA.05GillespiteBaFe2+[Si4O10]
9.EA.05EffenbergeriteBaCu[Si4O10]
9.EA.05WesselsiteSrCu[Si4O10]
9.EA.10Ekanite(Ca,Fe2+,Pb)2(Th,U)[Si8O20]
9.EA.15Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
9.EA.15Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2O
9.EA.15Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2O
9.EA.20MagadiiteNa2Si14O29 · 11H2O
9.EA.25DalyiteK2ZrSi6O15
9.EA.25DavaniteK2TiSi6O15
9.EA.30Sazhinite-(Ce)Na3Ce[Si6O15] · 6H2O
9.EA.30Sazhinite-(La)Na3La[Si6O15] · 2H2O
9.EA.35ArmstrongiteCaZr[Si6O15] · 3H2O
9.EA.40OkeniteCaSi2O5 · 2H2O
9.EA.45NekoiteCa3Si6O15·7H2O
9.EA.50CavansiteCa(VO)Si4O10 · 4H2O
9.EA.55PentagoniteCa(VO)Si4O10 · 4H2O
9.EA.60PenkvilksiteNa4Ti2Si8O22 · 4H2O
9.EA.60TumchaiteNa2Zr(Si4O11) · 2H2O
9.EA.65NabesiteNa2BeSi4O10 · 4H2O
9.EA.70Ajoite(K,Na)Cu7AlSi9O24(OH)6 · 3H2O
9.EA.75ZeravshaniteNa2Cs4Zr3[Si18O45]*2H2O
9.EA.80Bussyite-(Ce)(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4

Other Names for Plumbophyllite

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 Plumbophyllite

Reference List:
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.

http://minerals.gps.caltech.edu/Manuscripts/2009/Plumbophyllite/Index.html

Internet Links for Plumbophyllite

Localities for Plumbophyllite

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.
Australia
 
  • Queensland
    • Mount Isa - Cloncurry area
      • Mount Isa district
        • Mount Isa Mines
R Bottrill (unpub data)
USA
 
  • California
    • San Bernardino Co.
      • Soda Lake Mts
        • Baker
American Mineralogist, Volume 94, pages 1198–1204, 2009
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 30, 2015 02:14:44 Page generated: March 23, 2015 13:26:37