Mindat Logo

Petewilliamsite

Formula:
(Ni,Co)
 
30
[As
 
2
O
 
7
]
 
15
System:MonoclinicColour:dark violet-red to dark ...
Name:
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 Petewilliamsite

IMA status:Approved 2002
Strunz 8th edition ID:7/A.0-
Nickel-Strunz 10th (pending) edition ID:8.FA.25

8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
A : Polyphosphates, etc., without OH and H2O; dimers of corner-sharing RO4 tetrahedra.
Dana 7th edition ID:39.1.10.1
mindat.org URL:http://www.mindat.org/min-26522.html
Please feel free to link to this page.

Type Occurrence of Petewilliamsite

Type Locality:Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany
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:
XanthiositeRooseveltiteQuartzPaganoiteNickeline
BunseniteBismuthAerugite

Physical Properties of Petewilliamsite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:dark violet-red to dark brownish red
Density (measured):4.904 g/cm3

Crystallography of Petewilliamsite

Crystal System:Monoclinic
Class (H-M):2 - Sphenoidal
Space Group:B2 {B1 1 2} {C2} {C1 2 1}
Cell Parameters:a = 33.256Å, b = 8.482Å, c = 14.191Å
β = 104.145°
Ratio:a:b:c = 3.921 : 1 : 1.673
Unit Cell Volume:V 3881.6 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
3.118 (100)
3.005 (60)
2.567 (50)
1.637 (50)
4.235 (30)

Chemical Properties of Petewilliamsite

Formula:
(Ni,Co)
 
30
[As
 
2
O
 
7
]
 
15
Essential elements:As, Ni, O
All elements listed in formula:As, Co, Ni, O
Analytical Data:by electron microprobe analysis
NiO (19.45)
CoO (18.39)
CuO (3.40)
CaO (0.17)
FeO (0.04)
As2O5 (60.32)
Common Impurities:Ca,Cu,Fe

Relationship of Petewilliamsite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.FA.05Blossite
α-Cu
 
2
[V
 
2
O
 
7
]
8.FA.10Ziesite
β-Cu
 
2
[V
 
2
O
 
7
]
8.FA.15Chervetite
Pb
 
2
[V
 
2
O
 
7
]
8.FA.15UM1999-17:O:PbV
Pb
 
4
[O|(VO
 
4
)
 
2
]
8.FA.20Pyrocoproite
(K,Na)
 
2
Mg(P
 
2
O
 
7
)
8.FA.20Pyrophosphite
K
 
2
Ca(P
 
2
O
 
7
)

Other Names for Petewilliamsite

Synonyms:
IMA2002-059
Other Languages:
German:Petewilliamsit

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Petewilliamsite

Reference List: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(2): 231-240.

Internet Links for Petewilliamsite

Search Engines:
  • Look for Petewilliamsite on Google
  • Look for Petewilliamsite images on Google
  • External Links:
  • Look for Petewilliamsite on Webmineral
  • Look for Petewilliamsite on Athena Mineralogy
  • Look for Petewilliamsite on Wikipedia
  • Look for Petewilliamsite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Petewilliamsite in the Natural History Museum (London) online catalogue
  • Mineral Dealers:
  • Fabre Minerals - search for Petewilliamsite specimens
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy minerals from Mineralium.com
  • Edwards Minerals - Fine Specimens
  • Fine Minerals from Dan Weinrich Minerals
  • Top quality minerals from Kristalle of California
  • Find Petewilliamsite on www.crystalclassics.co.uk
  • Lapis Mineral Magazin
  • Buy fine minerals and gemstones from Pala International
  • Buy from David K Joyce minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • The Arkenstone - Fine Minerals
  • Jobs:
  • Mining & Geology Jobs
  • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Petewilliamsite

    The 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. ? 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.
    Germany
     
    • Saxony
      • Erzgebirge
        • Johanngeorgenstadt District
    A.C. Roberts, P.C. Burns, R.A. Gault, A.J. Criddle, M. N. Feinglos: Miner. Mag. 68(2):231-240 (2004)
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 1st Nov 2009 17:56:13