Natroglaucocerinite

Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O
IMA status
  • Approved
  • Questionable
IMA symbol
Ngc
Also known as
  • IMA1995-025
  • Natroglaucoceriniet
  • Natroglaucocerinit

Where it forms, where it's found

Type locality
Hilarion Mine
  1. Kamariza Mines (Kamareza Mines)
  2. Agios Konstantinos (Kamariza)
  3. Lavreotiki
  4. East Attica
  5. Attica
  6. Greece

37.7200°, 24.0120°

3recorded occurrences
Source · OpenStreetMap

Physical

Lustre
(not reported)
Colour
(not reported)
Streak
(not reported)
Cleavage

(not reported)

Optical

Luminescence
(not reported)

Crystallography

Crystal system
Hexagonal
Comment

No structural data

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
8OOxygenOxygen3815.999607.962
50.22%
30ZnZincZinc665.380392.280
32.40%
13AlAluminiumAluminium326.98280.946
6.68%
16SSulfurSulfur232.06064.120
5.30%
1HHydrogenHydrogen421.00842.336
3.50%
11NaSodiumSodium122.99022.990
1.90%
Total1210.634100.00%

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

From IMA formula

Synonyms

  • IMA1995-025
  • Natroglaucoceriniet
  • Natroglaucocerinit

In other languages

German
IMA 1995-025 · Natroglaukokerinit
Italian
natroglaucocerinite

Classification

Strunz
10th ed.

7.DD.35

  • 7SulfatesClass
  • 7.DSulfates (selenates, etc.) with additional anions, with H2ODivision
  • 7.DDWith only medium-sized cations; sheets of edge-sharing octahedraGroup
  • 7.DD.35NatroglaucoceriniteSpecies

Group, growth & confusion

In the same group
6 members

Literature, links & citation

Citations
  1. 1995Witzke, T., Pöllmann, H., Vogel, A. (1995): Struktur und Synthese von [Zn8-xAlOH)16][(SO4X/2+Y/2NaY(H2O)6]. Zeitschrift für Kristallographie, Supplemental Issue, 9, 252.
  2. 1996Witzke, T., Pöllmann, H., Vogel, A. (1996): Natroglaucocerinite, [Zn5Al3(OH)16][(SO4)1.5Na1.5(SO4)0.75(H2O)9]. Joint Committee on Powder Diffraction, Grant in Aid Report, No. 48-1849.
  3. 2012Mills, S. J.; Christy, A. G.; Génin, J.-M. R.; Kameda, T.; Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5). 1289-1336 doi:10.1180/minmag.2012.076.5.10DOI: 10.1180/minmag.2012.076.5.10
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Natroglaucocerinite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/natroglaucocerinite-10812},
  note      = {Accessed 2026-05-11}
}