IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Petterdite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About PetterditeHide

William Frederick Petterd
Formula:
PbCr3+2(CO3)2(OH)4 · H2O
Colour:
Lilac
Lustre:
Pearly
Hardness:
2
Specific Gravity:
3.97 (Calculated)
Crystal System:
Orthorhombic
Name:
The name petterdite was first used by Twelvetrees for a mineral that was later shown to be a P-bearing mimetite, and hence discredited (see Petterdite (of Twelvetrees).

This mineral was named by W.D. Birch, U. Kolitsch, T. Witzke, L. Nasdala, and R.S. Bottrill in 2000 in honor of William Frederick Petterd (13 July 1849, Hobart Town, Tasmania, Australia - 15 April 1910, Launceston, Tasmania, Australia), boot importer and scientist. He published many papers on conchology and geology, and wrote the Catalogue of the Minerals of Tasmania. He also described dundasite, the Cr(III) analogue of this mineral.
The Cr(III) analogue of dundasite.
See also Unnamed (Ca-analogue of petterdite).


Classification of PetterditeHide

Approved
First Published:
2000
5.DB.10

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations

Physical Properties of PetterditeHide

Pearly
Transparency:
Translucent
Colour:
Lilac
Streak:
Violet, pale
Hardness:
Comment:
Estimated
Cleavage:
Imperfect/Fair
Fair parallel to {100} also possibly {010}
Density:
3.97 g/cm3 (Calculated)

Optical Data of PetterditeHide

Type:
Biaxial (-)
RI values:
nα = 1.704 nβ = 1.802 nγ = 1.842
Max Birefringence:
δ = 0.138
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v weak

Chemical Properties of PetterditeHide

Formula:
PbCr3+2(CO3)2(OH)4 · H2O
IMA Formula:
PbCr2(CO3)2(OH)4 · H2O

Crystallography of PetterditeHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 9.079(3) Å, b = 16.321(9) Å, c = 5.786(7) Å
Ratio:
a:b:c = 0.556 : 1 : 0.355
Unit Cell V:
857.36 ų (Calculated from Unit Cell)

Type Occurrence of PetterditeHide

General Appearance of Type Material:
Earthy, pale purplish mineral in crocoite-bearing gossan.
Place of Conservation of Type Material:
Museum Victoria, Melbourne, Australia, M38601.

Synonyms of PetterditeHide

Other Language Names for PetterditeHide

German:Petterdit
Spanish:Petterdita

Relationship of Petterdite to other SpeciesHide

Other Members of this group:
AlumohydrocalciteCaAl2(CO3)2(OH)4 · 4H2OTric. 1 : P1
DresseriteBaAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
DundasitePbAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
HydrodresseriteBaAl2(CO3)2(OH)4 · 3H2OTric.
KochsándoriteCaAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
StrontiodresseriteSrAl2(CO3)2(OH)4 · H2OOrth.
Unnamed (Ca-analogue of Petterdite)CaCr3+2(CO3)2(OH)4 · H2O

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cerussite4 photos of Petterdite associated with Cerussite on mindat.org.
Crocoite3 photos of Petterdite associated with Crocoite on mindat.org.
Anglesite3 photos of Petterdite associated with Anglesite on mindat.org.
Philipsbornite1 photo of Petterdite associated with Philipsbornite on mindat.org.
Chrome-Cerussite1 photo of Petterdite associated with Chrome-Cerussite on mindat.org.
Galena1 photo of Petterdite associated with Galena on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.DB.05AlumohydrocalciteCaAl2(CO3)2(OH)4 · 4H2OTric. 1 : P1
5.DB.05NasledovitePbMn3Al4(CO3)4(SO4)O5 · 5H2O
5.DB.05Para-alumohydrocalciteCaAl2(CO3)2(OH)4 · 6H2O
5.DB.05UM1977-02-CO:AlCaHCa6Al2(CO3)3O6 · 32H2O
5.DB.10DresseriteBaAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
5.DB.10DundasitePbAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m)
5.DB.10MontroyaliteSr4Al8(CO3)3(OH,F)26 · 10-11H2O
5.DB.10StrontiodresseriteSrAl2(CO3)2(OH)4 · H2OOrth.
5.DB.10KochsándoriteCaAl2(CO3)2(OH)4 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
5.DB.15HydrodresseriteBaAl2(CO3)2(OH)4 · 3H2OTric.
5.DB.20Schuilingite-(Nd)PbCu(Nd,Gd,Sm,Y)(CO3)3(OH) · 1.5H2O
5.DB.25SergeeviteCa2Mg11(CO3)9(HCO3)4(OH)4•6H2O
5.DB.30SzymańskiiteHg16(Ni,Mg)6(CO3)12(OH)12(H3O)8•3H2OHex.

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 PetterditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Birch, W.D., Kolitsch, U., Witzke, T., Nasdala, L., Bottrill, R.S. (2000) Petterdite, the Cr-dominant analogue of dundasite: a new mineral species from Dundas, Tasmania, Australia and Callenberg, Saxony, Germany. Canadian Mineralogist: 38: 1467-1476.

Internet Links for PetterditeHide

Localities for PetterditeHide

ⓘ - 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 (TL)
 
  • Tasmania
    • West Coast municipality
      • Zeehan district
        • Dundas mineral field
Birch, W.D., Kolitsch, U., Witzke, T., Nasdala, L. & Bottrill, R.S. 2001, Petterdite, the Cr-dominant analogue of dundasite, a new mineral species from Dundas, Tasmania, Australia and Callenberg, Saxony, Germany. Canadian Mineral., v. 38, p. 1467-1476.; Kampf, A. R., Mills, S. J., Housley, R. M., Bottrill, R. S., & Kolitsch, U. (2012). Reynoldsite, Pb2Mn4+ 2 O5 (CrO4), a new phyllomanganate-chromate from the Blue Bell claims, California and the Red Lead mine, Tasmania. American Mineralogist, 97(7), 1187-1192.
Germany
 
  • Saxony
    • Zwickau
      • Glauchau
        • Callenberg
[MinRec 33:166]
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 1993-2018, 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: October 24, 2018 02:07:32 Page generated: October 19, 2018 23:24:06
Go to top of page