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UM1992-08-E:AuHg
Valid as an unnamed mineral
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Formula:
Au88-94Hg6-12
Colour:
slightly brassier than gold's
Crystal System:
Monoclinic
Small grains, usually below 5 microns in size, sometimes with octahedral faces seen; more rarely as prismatic/stubby/acicular grains up to 10 x 150 microns. Grains are of multidomain character. The grains come from Pleistocene alluvials.
Likely formed due to an inversion of a metastable precursor phase.
Likely formed due to an inversion of a metastable precursor phase.
Unique Identifiers
Mindat ID:
52177
Long-form identifier:
mindat:1:1:52177:6
Similar Names
| UM1965-01-E:AgAu | Ag2Au | |
| UM1965-02-E:AgAu | Au3Ag2 | |
| UM1965-04-E:AuCu | Au7Cu3 | |
| UM1965-05-E:AuCu | Au3Cu4 | |
| UM1974-06-O:CuH | Cu-O-H | |
| UM1991-06-E:AuCu | Au3Cu | |
| UM2001-05-E:AuCu | Au2(Cu,Ag) | |
| UM2004-07-E:AgHg | Ag2Hg |
IMA Classification of UM1992-08-E:AuHg
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM1992-08-E:AuHg
Colour:
Slightly brassier than gold's
Chemistry of UM1992-08-E:AuHg
Mindat Formula:
Au88-94Hg6-12
Element Weights:
| Element | % weight |
|---|---|
| Hg | 6.493 % |
Calculated from ideal end-member formula.
Elements listed:
Crystallography of UM1992-08-E:AuHg
Crystal System:
Monoclinic
Cell Parameters:
a = 4.729(2) Å, b = 5.243(8) Å, c = 4.546(2) Å
β = 90.90(6)°
β = 90.90(6)°
Ratio:
a:b:c = 0.902 : 1 : 0.867
Unit Cell V:
112.70 ų (Calculated from Unit Cell)
Comment:
heating to 500oC triggers pattern change to that corresponding to pure gold
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.622 Å | (m) |
| 2.368 Å | (vs) |
| 2.277 Å | (vw) |
| 2.059 Å | (m) |
| 1.597 Å | (vw) |
| 1.445 Å | (w) |
| 1.436 Å | (w) |
| 1.237 Å | (m) |
| 1.182 Å | (m) |
| 0.8661 Å | (m) |
| 0.8393 Å | (vs) |
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 UM1992-08-E:AuHg
mindat.org URL:
https://www.mindat.org/min-52177.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for UM1992-08-E:AuHg
Reference List:
Localities for UM1992-08-E:AuHg
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.
USA | |
| Desborough et al. (1992) +1 other reference |
