SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
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 EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


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

About PetewilliamsiteHide

Pete Williams
dark violet-red to dark brownish red
Specific Gravity:
Crystal System:
Honouring Prof. Peter A. Williams of the University of Western Sydney, Australia, for his contributions to the study of secondary minerals
This page provides mineralogical data about Petewilliamsite.

Classification of PetewilliamsiteHide

Approval year:

F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
A : Polyphosphates, etc., without OH and H2O; dimers of corner-sharing RO4 tetrahedra.
Dana 7th ed.:

Pronounciation of PetewilliamsiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of PetewilliamsiteHide

dark violet-red to dark brownish red
4.904 g/cm3 (Measured)    

Chemical Properties of PetewilliamsiteHide

Common Impurities:

Crystallography of PetewilliamsiteHide

Crystal System:
Class (H-M):
2 - Sphenoidal
Space Group:
Cell Parameters:
a = 33.256 Å, b = 8.482 Å, c = 14.191 Å
β = 104.145°
a:b:c = 3.921 : 1 : 1.673
Unit Cell V:
3881.6 ų

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
CIF File    Best | x | y | z | a | b | c
Stop | Start
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014571PetewilliamsiteRoberts A C, Burns P C, Gault R A, Criddle A J, Feinglos M N (2004) Petewilliamsite, (Ni,Co)30(As2O7)15, a new mineral from Johanngeorgenstadt, Saxony, Germany: description and crystal structure Mineralogical Magazine 68 231-2402004Johanngeorgenstadt, Saxony, Germany0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
4.235 Å(30)
3.118 Å(100)
3.005 Å(60)
2.567 Å(50)
1.637 Å(50)
1.507 Å(30)

Type Occurrence of PetewilliamsiteHide

General Appearance of Type Material:
scattered patches of mm-sized aggregates, consisting of crystals with an average size of 20 µm to 0.3 mm
Geological Setting of Type Material:
in nickeline-veined quartz
Associated Minerals at Type Locality:

Synonyms of PetewilliamsiteHide

Other Language Names for PetewilliamsiteHide

Simplified Chinese:皮特威廉姆斯矿
Traditional Chinese:皮特威廉姆斯礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Petewilliamsite associated with XanthiositeNi3(AsO4)2
1 photo of Petewilliamsite associated with AerugiteNi8.5(AsO4)2As5+O8

Related Minerals - Nickel-Strunz GroupingHide

8.FA.05Blossiteα-Cu2(V2O7)Orth. mm2 : Fdd2
8.FA.15UM1999-17:O:PbVPb4V2O9 or Pb4(VO4)2O

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 PetewilliamsiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Roberts, A.C., P.C. Burns, R.A. Gault, A.J. Criddle, M.N. Feinglos (2004): Petewilliamsite, (Ni,Co)30(As2O7)15, a new mineral from Johanngeorgenstadt, Saxony, Germany: description and crystal structure. Mineralogical Magazine 68, 231-240.

Internet Links for PetewilliamsiteHide

Localities for PetewilliamsiteHide

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.
  • Occitanie
    • Aveyron
      • Villefranche-de-Rouergue
Gayraud, L. (2017) Minéraux de l' Aveyron (région Midi-Pyrénées), Geoforum thread.
Germany (TL)
  • Saxony
    • Erzgebirgskreis
A.C. Roberts, P.C. Burns, R.A. Gault, A.J. Criddle, M. N. Feinglos: Mineralogical Magazine 68(2):231-240 (2004)
  • Sardinia
    • South Sardinia Province
      • Gonnosfanadiga
        • Fenugu Sibiri Mine
Caboni, F., Mamberti, M., Tanca, G.A., Vinci, A., Bittarello, E., Marengo, A., Brizio, P., Bracco, R., Baralis, L., Desor, J., Ciriotti, M.E. (2018): Arseniati, arseniuri e altre novità di Pira Inferida - Fenugu Sibiri, Gonnosfanadiga, Sud Sardegna. Micro, 16, 110-156 (in Italian with abstracts in English, French and German).
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2021, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us - Report a bug/vulnerability Current server date and time: May 17, 2021 03:00:55 Page generated: May 14, 2021 12:29:00
Go to top of page