Percleveite-(Ce)
A valid IMA mineral species
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About Percleveite-(Ce)
Per Teodor Cleve
Formula:
Ce2Si2O7
Colour:
yellowish grey, white
Lustre:
Resinous, Greasy
Hardness:
6
Specific Gravity:
5.21
Crystal System:
Tetragonal
Name:
Honouring Per Theodor Cleve (10 February 1840 Stockholm, Sweden - 18 June 1905 Uppsala, Sweden), professor of chemistry in the University of Uppsala, Sweden, and discoverer of the elements Holmium and Thulium
The Ce-dominant analogue of percleveite-(La).
One of a few Ce-dominant purely silicate minerals, by stetindite and 'UM1979-22-SiO:CeLaNd'.
One of a few Ce-dominant purely silicate minerals, by stetindite and 'UM1979-22-SiO:CeLaNd'.
Unique Identifiers
Mindat ID:
11464
Long-form identifier:
mindat:1:1:11464:6
GUID
(UUID V4):
(UUID V4):
adac5a94-6ca4-4ab7-96f4-f272c30b3ab4
IMA Classification of Percleveite-(Ce)
Approved
Approval year:
2002
Classification of Percleveite-(Ce)
9.BC.35
9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
C : Si2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordination
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Pcv-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Percleveite-(Ce)
Resinous, Greasy
Transparency:
Transparent
Colour:
yellowish grey, white
Streak:
white
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
along {001}
along {001}
Density:
5.21 g/cm3 (Measured)
Optical Data of Percleveite-(Ce)
Type:
Uniaxial (+)
Chemistry of Percleveite-(Ce)
Mindat Formula:
Ce2Si2O7
Elements listed:
Crystallography of Percleveite-(Ce)
Crystal System:
Tetragonal
Class (H-M):
4 - Pyramidal
Space Group:
P41
Cell Parameters:
a = 6.7805(8) Å, c = 24.689(4) Å
Ratio:
a:c = 1 : 3.641
Unit Cell V:
1,135.08 ų (Calculated from Unit Cell)
Z:
8
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0007015 | Percleveite-(Ce) | Holtstam D, Norrestam R, Andersson U B (2003) Percleveite-(Ce) - a new lanthanide disilicate mineral from Bastnas, Skinnskatteberg, Sweden European Journal of Mineralogy 15 725-731 | 2003 | Bastnas, Skinnskatteberg, Sweden | 0 | 293 | |
| 0010444 | Percleveite-(Ce) | Deng B, Ibers J A (2005) Dicerium disilicate, Ce2[Si2O7] Acta Crystallographica E61 i76-i78 |  | 2005 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.08 Å | (100) |
| 3.12 Å | (25) |
| 3.13 Å | (25) |
| 3.27 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 37 : Layered igneous intrusions and related PGE minerals |
Type Occurrence of Percleveite-(Ce)
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:
Reference:
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
Synonyms of Percleveite-(Ce)
Other Language Names for Percleveite-(Ce)
Common Associates
Associated Minerals Based on Photo Data:
| 5 photos of Percleveite-(Ce) associated with Ferriallanite-(Ce) | (CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH) |
| 3 photos of Percleveite-(Ce) associated with Cerite-(CeCa) | (Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3 |
| 1 photo of Percleveite-(Ce) associated with Delhuyarite-(Ce) | Ce4Mg(Fe3+,W)3◻(Si2O7)2O6(OH)2 |
| 1 photo of Percleveite-(Ce) associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 9.BC. | Kozłowskiite | Ca4Fe2+2Sn3(Si2O7)2(Si2O6OH)2 |
| 9.BC. | Anorthoyttrialite-(Y) | Y4(SiO4)(Si3O10) |
| 9.BC.05 | Gittinsite | CaZrSi2O7 |
| 9.BC.05 | Keiviite-(Y) | Y2Si2O7 |
| 9.BC.05 | Keiviite-(Yb) | Yb2Si2O7 |
| 9.BC.05 | Thortveitite | Sc2Si2O7 |
| 9.BC.05 | Yttrialite-(Y) | (Y,Th)2Si2O7 |
| 9.BC.10 | Keldyshite | (Na,H)2ZrSi2O7 |
| 9.BC.10 | Khibinskite | K2ZrSi2O7 |
| 9.BC.10 | Parakeldyshite | Na2ZrSi2O7 |
| 9.BC.15 | Rankinite | Ca3Si2O7 |
| 9.BC.20 | Barysilite | Pb8Mn2+[Si2O7]3 |
| 9.BC.25 | Edgarbaileyite | [Hg2]2+3[Si2O7] |
| 9.BC.30 | Kristiansenite | Ca4Sc2Sn2(Si2O7)2(Si2O6OH)2 |
| 9.BC.30 | Silesiaite | Ca4Fe3+2Sn2(Si2O7)2(Si2O6OH)2 |
| 9.BC.35 | Percleveite-(La) | La2Si2O7 |
| 9.BC.40 | Scottyite | BaCu2Si2O7 |
Fluorescence of Percleveite-(Ce)
none
Other Information
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 Percleveite-(Ce)
mindat.org URL:
https://www.mindat.org/min-11464.html
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References for Percleveite-(Ce)
Localities for Percleveite-(Ce)
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Mongolia | |
| Pavel.M. Kartashov (n.d.) |
Russia | |
| Kasatkin et al. (2020) |
Sweden (TL) | |
| Holtstam et al. (2003) +2 other references |
| Holtstam et al. (2017) | |
USA | |
| Chamberlain et al. (2013) |
| Steven C. Chamberlain and David G. Bailey (2012) |
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Bastnäs Mines, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden