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Petersite-(Ce)

A valid IMA mineral species
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Formula:
CeCu6(PO4)3(OH)6 · 3H2O
Colour:
yellowish-green
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
3.424 (Calculated)
Crystal System:
Hexagonal
Member of:
Mixite Group
Name:
Named for its relationship to pertersite-(Y) and for cerium being the dominant rare earth element.
This page provides mineralogical data about Petersite-(Ce).


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Unique IdentifiersHide

Mindat ID:
46097
Long-form identifier:
mindat:1:1:46097:0

Similar NamesHide

PetarasiteA valid IMA mineral speciesNa5Zr2(Si6O18)(Cl,OH) · 2H2O
Petersenite-(Ce)A valid IMA mineral speciesNa4(Ce,La,Nd)2(CO3)5
PetersiteA synonym
Petersite-(La)A valid IMA mineral speciesLaCu6(PO4)3(OH)6 · 3H2O
Petersite-(Y)A valid IMA mineral speciesYCu6(PO4)3(OH)6 · 3H2O
PietersiteA variety of 'Chalcedony' [Quartz]SiO2

IMA Classification of Petersite-(Ce)Hide

Classification of Petersite-(Ce)Hide

Strunz-mindat (2026):
8.DL.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
Pts-CeIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Petersite-(Ce)Hide

Lustre:
Vitreous
Transparency:
Translucent
Colour:
Yellowish-green
Streak:
White
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None Observed
Fracture:
None observed
Density:
3.424 g/cm3 (Calculated)
Comment:
Calculated based on the empirical chemical formula

Chemistry of Petersite-(Ce)Hide

Mindat Formula:
CeCu6(PO4)3(OH)6 · 3H2O
Element Weights:
Element% weight
Cu39.617 %
O34.912 %
Ce14.559 %
P9.655 %
H1.257 %

Calculated from ideal end-member formula.
Elements listed:
Ce, Cu, H, O, P - search for minerals with similar chemistry

Crystallography of Petersite-(Ce)Hide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 13.2197(18) Å, c = 5.8591(9) Å
Ratio:
a:c = 1 : 0.443
Unit Cell V:
886.76 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]

Type Occurrence of Petersite-(Ce)Hide

Type Locality:
ⓘ Cherry Creek Mining District, Black Hills (Black Hill Range), Yavapai County, Arizona, USA
General Appearance of Type Material:
sprays of yellowish-green, acicular crystals approximately 20 μm 20 μm 50 μm in size.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Mineral Museum of the University of Arizona, Tucson, Arizona, USA, catalogue number 19801 and with the RRUFF Project, deposition number R050541
Geological Setting of Type Material:
Highly weathered granite
Associated Minerals at Type Locality:
AlbiteBiotiteChalcopyriteChlorite GroupHematite
MalachiteOrthoclaseQuartz
Reference:
Morrison, Shaunna M., Domanik, Kenneth J., Yang, Hexiong, Downs, Robert T. (2016) Petersite-(Ce), Cu2+6Ce(PO4)3(OH)6·3H2O, a new mixite group mineral from Yavapai County, Arizona, USA. The Canadian Mineralogist, 54 (6) 1505-1511 doi:10.3749/canmin.1500050

Synonyms of Petersite-(Ce)Hide

Other Language Names for Petersite-(Ce)Hide

Relationship of Petersite-(Ce) to other SpeciesHide

Member of:
Mixite Group
Other Members of Mixite Group:
Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(La)LaCu6(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
Petersite-(Y)YCu6(PO4)3(OH)6 · 3H2OHex.
PlumboagarditePbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m

Related Minerals - Strunz-mindat GroupingHide

8.DL.05FoggiteCaAl(PO4)(OH)2 · H2OOrth. mmm(2/m2/m2/m)
8.DL.10FluorowarditeNaAl3(PO4)2F2(OH)2(H2O)2 Tet. 422 : P41212
8.DL.10WarditeNaAl3(PO4)2(OH)4 · 2H2OTet. 422 : P41212
8.DL.10Millisite(Na,K)CaAl6(PO4)4(OH)9 · 3H2OTet.
8.DL.10CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2OTet. 422 : P41212
8.DL.15Agardite-(Nd)NdCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Y)YCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Agardite-(Ce)CeCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15'Agardite-(Dy)'(Dy,La)Cu6(AsO4)3(OH)6 · 3H2OHex.
8.DL.15Agardite-(La)LaCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(Y)YCu6(PO4)3(OH)6 · 3H2OHex.
8.DL.15ZálesíiteCaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15MixiteBiCu6(AsO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15Petersite-(La)LaCu6(PO4)3(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15GoudeyiteAlCu6(AsO4)3(OH)6 · 3H2OHex.
8.DL.15CalciopetersiteCaCu6(PO4)2(PO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.15PlumboagarditePbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2OHex. 6/m : P63/m
8.DL.20DugganitePb3Zn3(AsO4)2(TeO6)Trig. 32 : P321
8.DL.20WallkilldelliteCa2Mn2+3(AsO4)2(OH)4 · 9H2OHex.
8.DL.20Wallkilldellite-(Fe)(Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2OHex.
8.DL.20CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
8.DL.20KuksitePb3Zn3(PO4)2(TeO6)Trig. 32 : P321
8.DL.25AngastoniteCaMgAl2(PO4)2(OH)4 · 7H2OAmor.
8.DL.30LångbanshyttanitePb2Mn2Mg(AsO4)2(OH)4 · 6H2OTric. 1 : P1

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.

Internet Links for Petersite-(Ce)Hide

References for Petersite-(Ce)Hide

Localities for Petersite-(Ce)Hide

Showing 2 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Japan
 
  • Mie Prefecture
    • Kumano City
      • Kiwa town
        • Ohgurusu
Nishio–Hamane et al. (2020)
USA (TL)
 
  • Arizona
    • Yavapai County
      • Black Hills (Black Hill Range)
Williams et al. (2014) +2 other references
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