Percleveite-(Ce)

Ce2Si2O7
IMA status
  • Approved
IMA symbol
Pcv-Ce
IMA approved
2002
Also known as
  • IMA2002-023
  • Percleveiet-(Ce)

Where it forms, where it's found

Type locality
Bastnäs Mines
  1. Riddarhyttan
  2. Skinnskatteberg
  3. Västmanland County
  4. Sweden

59.8468°, 15.5896°

5recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789106/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Transparency
Transparent
Colour
yellowish grey · white
Streak
white
Tenacity
brittle
Cleavage
Poor/Indistinct

along (001)

Density
5.21 g/cm³

Optical

Optical type
Uniaxial (+)
UV response
none

Crystallography

Crystal system
Tetragonal
Space group
#132
Cell parameters
a = 6.7805(8) Å · c = 24.689(4) Å
Z
8
Type-locality form

Anhedral grains to 0,5mm across in Association With cerite-(Ce) and smaller amount of bastnäsite-(Ce)

Crystal structure

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
58CeCeriumCerium2140.116280.232
62.50%
8OOxygenOxygen715.999111.993
24.97%
14SiSiliconSilicon228.08556.170
12.53%
Total448.395100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Synonyms

  • IMA2002-023
  • Percleveiet-(Ce)

In other languages

German
IMA 2002-023 · Percleveit-(Ce)
Italian
Percleveite- · Percleveite-(Ce)

Classification

Strunz
10th ed.

9.BC.35

  • 9SilicatesClass
  • 9.BSorosilicatesDivision
  • 9.BCSi2O7 groups, without non-tetrahedral anions; cations in octahedral [6] and greater coordinationGroup
  • 9.BC.35Percleveite-(Ce)Species

Literature, links & citation

Citations
  1. 2003Holtstam, Dan, Norrestam, Rolf, Andersson, Ulf B. (2003) Percleveite-(Ce) - a new lanthanide disilicate mineral from Bastnäs, Skinnskatteberg, Sweden. European Journal of Mineralogy, 15 (4) 725-731 doi:10.1127/0935-1221/2003/0015-0725 DOI: 10.1127/0935-1221/2003/0015-0725
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Percleveite-(Ce) — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/percleveite-ce-11464},
  note      = {Accessed 2026-05-11}
}