Khurayyimite

Ca7Zn4(Si2O7)2(OH)10 · 4H2O
IMA status
  • Approved
IMA symbol
Khu
IMA approved
2019
Also known as
  • Khurayyimiet

Where it forms, where it's found

Geological setting

Small cavities and veins in altered spurrite marbles

Type locality
Khurayyim Mount (Jabal al Khurayyim)
  1. Daba-Siwaqa complex
  2. Transjordan Plateau
  3. Amman Governorate
  4. Jordan

31.5902°, 36.1734°

1recorded occurrences
Source · OpenStreetMap

Physical

Colour
Colorless
Streak
White

Crystallography

Crystal system
Monoclinic
Space group
P21/c
Cell parameters
a = 11.2450(8) Å · b = 9.0963(5) Å · c = 14.068(1) Å
Cell angles
β = 113.237(8) °
Ratio a:b:c
1 : 0.809 : 1.251
Z
2
Type-locality form

Spherulitic aggregates up to 200-300 μm in size. Individual elongated platy crystals in spherules are nearly 50 μm long and up to 10 μm thick.

Comment

by Synchrotron Single-Crystal X-ray Diffraction

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen2815.999447.972
39.98%
20CaCalciumCalcium740.078280.546
25.04%
30ZnZincZinc465.380261.520
23.34%
14SiSiliconSilicon428.085112.340
10.02%
1HHydrogenHydrogen181.00818.144
1.62%
Total1120.522100.00%

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

From IMA formula

Synonyms

  • Khurayyimiet

In other languages

German
IMA 2018-140 · Khurayyimit

Classification

Strunz
10th ed.

9.BK.05

  • 9SilicatesClass
  • 9.BSorosilicatesDivision
  • 9.BKUnclassified sorosilicatesGroup
  • 9.BK.05KhurayyimiteSpecies

Literature, links & citation

Citations
  1. 2019Galuskina, I. O., Krüger, B., Galuskin, E. V., Vapnik, Y., & Murashko, M. (2019). A New Mineral Khurayyimite, Ca7. 07Zn3. 89Si4. 02O14 (OH) 10 4H2O, from Daba Siwaqa Pyrometamorphic Rock, Jordan. In XIX International Meeting on Crystal Chemistry, X-ray Diffraction and Spectroscopy of Minerals (pp. 78-78).
  2. 2019Galuskina, I.O., Krüger, B., Galuskin, E.V., Vapnik, Y., Murashko, M. (2019) A New Mineral Khurayyimite, Ca7.07Zn3.89Si4.02O14(OH)10·4H2O, from Daba Siwaqa Pyrometamorphic Rock, Jordan. In XIX International Meeting on Crystal Chemistry, X-ray Diffraction and Spectroscopy of Minerals: 78-78.
  3. 2019Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2019) New minerals and nomenclature modifications approved in 2019. CNMNC Newsletter No 48. Mineralogical Magazine, 83 (2) 315-317 doi:10.1180/mgm.2019.23DOI: 10.1180/mgm.2019.23
  4. 2022(2022) Khurayyimite. Handbook of Mineralogy. Mineralogical Society of America
  5. 2023link.springer.com (n.d.) https://link.springer.com/article/10.1007/s00710-022-00804-z
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Khurayyimite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/khurayyimite-53413},
  note      = {Accessed 2026-05-11}
}