Aurihydrargyrumite

Au6Hg5
IMA status
  • Approved
IMA symbol
Ahg
IMA approved
2017
Also known as
  • Aurihydrargyrumiet
  • Aurihydrargyrumitt
  • IMA2017-003

Where it forms, where it's found

Type locality
Iyoki
  1. Uchiko
  2. Ehime Prefecture
  3. Japan

33.5652°, 132.6975°

4recorded occurrences
Source · OpenStreetMap

Safety & handling

Physical

Hardness
123456789102.5/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Streak
Silver white
Tenacity
malleable
Density
16.86 g/cm³

Crystallography

Crystal system
Hexagonal
Space group
P63/mcm
Cell parameters
a = 6.9960(10) Å · c = 10.154(2) Å
Unit cell volume
430.4 ų
Morphology

Submicron- to 2 μm-thick layer on placer gold. A prismatic face may be formed by (001) and (100) or (110).

Type-locality form

As as a submicron- to 2 μm-thick layer on the outermost surface of the placer gold.

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
79AuGoldGold6196.9671181.802
54.09%
80HgMercuryMercury5200.5921002.960
45.91%
Total2184.762100.00%

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

From IMA formula

Synonyms

  • Aurihydrargyrumiet
  • Aurihydrargyrumitt
  • IMA2017-003

In other languages

German
Aurihydrargyrumit · IMA 2017-003

Classification

Strunz
10th ed.

1.AD

  • 1ElementsClass
  • 1.AMetals and Intermetallic AlloysDivision
  • 1.ADMercury-amalgam familyGroup
  • 1.ADAurihydrargyrumiteSpecies

Literature, links & citation

Citations
  1. 2017Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017, CNMNC Newsletter No 37. Mineralogical Magazine, 81 (3) 737-742 doi:10.1180/minmag.2017.081.039DOI: 10.1180/minmag.2017.081.039
  2. 2018Nishio-Hamane, Daisuke, Tanaka, Takahiro, Minakawa, Tetsuo (2018) Aurihydrargyrumite, a Natural Au6Hg5 Phase from Japan. Minerals, 8 (9) 415 doi:10.3390/min8090415 DOI: 10.3390/min8090415
  3. 2020(2020) Aurihydrargyrumite. Handbook of Mineralogy. Mineralogical Society of America
  4. 2024Števko, Martin; Sejkora, Jiří (2024) Aurihydrargyrumite from the Otakar (Otokar, Ottokar) vein near Gelnica, Spišsko-gemerské rudohorie Mts., Slovakia, a new occurrence of natural Au6Hg5. Bulletin Mineralogie Petrologie, 32 (2). p.131-132. doi:10.46861/bmp.32.131DOI: 10.46861/bmp.32.131
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Aurihydrargyrumite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/aurihydrargyrumite-51827},
  note      = {Accessed 2026-05-11}
}