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Percleveite-(Ce)

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About Percleveite-(Ce)Hide

Per Teodor Cleve
Formula:
(Ce,La,Nd)2Si2O7
Colour:
yellowish grey, white
Lustre:
Resinous, Greasy
Hardness:
6
Specific Gravity:
5.21
Crystal System:
Tetragonal
Name:
Honouring Per Theodor Cleve (1840-1905), professor of chemistry in the University of Uppsala, Sweden, and discoverer of the elements Holmium and Thulium
One of a few Ce-dominant purely silicate minerals, by stetindite and 'UM1979-22-SiO:CeLaNd'.


Classification of Percleveite-(Ce)Hide

Approved
Approval Year:
2002
9.BC.35

9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination

Physical Properties of Percleveite-(Ce)Hide

Resinous, Greasy
Transparency:
Transparent
Colour:
yellowish grey, white
Streak:
white
Hardness:
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
along {001}
Density:
5.21 g/cm3 (Measured)    

Chemical Properties of Percleveite-(Ce)Hide

Formula:
(Ce,La,Nd)2Si2O7
IMA Formula:
Ce2Si2O7

Crystallography of Percleveite-(Ce)Hide

Crystal System:
Tetragonal
Class (H-M):
4 - Pyramidal
Cell Parameters:
a = 6.78 Å, c = 24.69 Å
Ratio:
a:c = 1 : 3.642
Unit Cell V:
1,134.96 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.08 (100)
3.12 (25)
3.13 (25)
3.27 (30)

Type Occurrence of Percleveite-(Ce)Hide

General Appearance of Type Material:
Anhedral grains to 0,5mm across in Association With cerite-(Ce) and smaller amount of bastnäsite-(Ce)
Place of Conservation of Type Material:
Swedish Museum of Natural History, Stockholm, Inventory no. 19060375
Associated Minerals at Type Locality:

Synonyms of Percleveite-(Ce)Hide

Other Language Names for Percleveite-(Ce)Hide

Simplified Chinese:硅镧铈石
Traditional Chinese:矽鑭鈰石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Ferriallanite-(Ce)5 photos of Percleveite-(Ce) associated with Ferriallanite-(Ce) on mindat.org.
Cerite-(Ce)2 photos of Percleveite-(Ce) associated with Cerite-(Ce) on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.BC.05GittinsiteCaZrSi2O7Mon.
9.BC.05Keiviite-(Y)Y2Si2O7
9.BC.05Keiviite-(Yb)Yb2Si2O7Mon. 2/m : B2/m
9.BC.05ThortveititeSc2Si2O7Mon.
9.BC.05Yttrialite-(Y)(Y,Th)2Si2O7
9.BC.10Keldyshite(Na,H)2ZrSi2O7Tric. 1 : P1
9.BC.10KhibinskiteK2ZrSi2O7Mon.
9.BC.10ParakeldyshiteNa2ZrSi2O7Tric.
9.BC.15RankiniteCa3Si2O7Mon. 2/m : P21/b
9.BC.20BarysilitePb8Mn2+[Si2O7]3Trig.
9.BC.25Edgarbaileyite(Hg-Hg)3Si2O7Mon.
9.BC.30KristianseniteCa2ScSn(Si2O7)(Si2O6OH)Tric. 1

Fluorescence of Percleveite-(Ce)Hide

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 Percleveite-(Ce)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Holtstam, D., Norrestam, R. and Andersson, U. B. (2003): Percleveite-(Ce) - a new lanthanide disilicate mineral from Bastnäs, Skinnskatteberg, Sweden. European Journal of Mineralogy, 15, 725-731

Internet Links for Percleveite-(Ce)Hide

Localities for Percleveite-(Ce)Hide

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.
Mongolia
 
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
      • Khaldzan Buragtag massif
        • Mount Ulyn Khuren
P.M. Kartashov data
Sweden (TL)
 
  • Västmanland
    • Skinnskatteberg
      • Riddarhyttan
Holtstam, D., Norrestam, R. and Andersson, U. B. (2003): Percleveite-(Ce) - a new lanthanide disilicate mineral from Bastnäs, Skinnskatteberg, Sweden. European Journal of Mineralogy, 15, 725-731; Lapis 28(10), 60 (2003); Holtstam, D., Bindi, L., Hålenius, U., & Andersson, U. B. (2017). Delhuyarite-(Ce)–Ce 4 Mg (Fe 3+ 2 W)□(Si 2 O 7) 2 O 6 (OH) 2–a new mineral of the chevkinite group, from the Nya Bastnäs Fe–Cu–REE deposit, Sweden. European Journal of Mineralogy, ejm2635_pap_gsw.
Holtstam, D., Bindi, L., Hålenius, U., & Andersson, U. B. (2017). Delhuyarite-(Ce)–Ce 4 Mg (Fe 3+ 2 W)□(Si 2 O 7) 2 O 6 (OH) 2–a new mineral of the chevkinite group, from the Nya Bastnäs Fe–Cu–REE deposit, Sweden. European Journal of Mineralogy. DOI: 10.1127/ejm/2017/0029-2635
USA
 
  • New York
    • St. Lawrence Co.
      • Russell
Chamberlain, S.C. & Bailey, D.G. (2013) A new feruvite locality east of Russell, St Lawrence County, New York. Mineral News, 29, #11, 1-7.
      • West Pierrepont
Steven C. Chamberlain and David G. Bailey (2012) Rare earth minerals in fracture mineralization in northern New York. Mineral News, 28, #7, 1-5.
Mineral and/or Locality  
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