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
GUID
(UUID V4):
(UUID V4):
6a4a5ab6-d6b7-4b17-8013-4bc7050abfb0
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
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
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
USA | |
| Desborough et al. (1992) +1 other reference |