Goldamalgam (of Chen et al.)
A material that is NOT an approved mineral species
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Formula:
(Au,Ag)Hg
Colour:
Brass yellow
Lustre:
Metallic
Hardness:
3
Crystal System:
Isometric
Name:
For the composition, being a gold amalgam.
Unique Identifiers
Mindat ID:
6974
Long-form identifier:
mindat:1:1:6974:4
GUID
(UUID V4):
(UUID V4):
3def78cd-b140-462f-855b-5510079d94a5
IMA Classification of Goldamalgam (of Chen et al.)
IMA status notes:
Rejected by the IMA
Classification of Goldamalgam (of Chen et al.)
1.AD.20b
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
D : Mercury-amalgam family
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
D : Mercury-amalgam family
1.1.12.1
1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
Physical Properties of Goldamalgam (of Chen et al.)
Metallic
Transparency:
Opaque
Colour:
Brass yellow
Hardness:
3 on Mohs scale
Hardness:
VHN20=77 - 79 kg/mm2 - Vickers
Tenacity:
Malleable
Optical Data of Goldamalgam (of Chen et al.)
Type:
Isotropic
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
430nm | 47.13% | 33.8% |
480nm | 53.73% | 46.5% |
530nm | 62.71% | 56.4% |
590nm | 66.95% | 62.53% |
660nm | 67.76% | 63.53% |
700nm | 72.14% | 71.31% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 72.14%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale brown
Chemistry of Goldamalgam (of Chen et al.)
Mindat Formula:
(Au,Ag)Hg
Elements listed:
Crystallography of Goldamalgam (of Chen et al.)
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Im3m
Cell Parameters:
a = 10.01 Å
Unit Cell V:
1,003.00 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.38 Å | (10) |
2.22 Å | (10) |
2.12 Å | (5) |
1.45 Å | (6) |
1.24 Å | (8) |
Synonyms of Goldamalgam (of Chen et al.)
Gold Amalgam (in part)
Other Language Names for Goldamalgam (of Chen et al.)
Simplified Chinese:r-金汞齐
Related Minerals - Strunz-mindat Grouping
1.AD. | Aurihydrargyrumite | Au6Hg5 |
1.AD.05 | Mercury | Hg |
1.AD.10 | Belendorffite | Cu7Hg6 |
1.AD.10 | Kolymite | Cu7Hg6 |
1.AD.15c | Eugenite | Ag11Hg2 |
1.AD.15b | Luanheite | Ag3Hg |
1.AD.15d | Moschellandsbergite | Ag2Hg3 |
1.AD.15a | Paraschachnerite | Ag3Hg2 |
1.AD.15a | Schachnerite | Ag1.1Hg0.9 |
1.AD.20a | Weishanite | (Au,Ag,Hg) |
1.AD.20c | Yiyangite | Au3Hg |
1.AD.25 | Potarite | PdHg |
1.AD.30 | Leadamalgam | Pb0.7Hg0.3 |
1.AD.35 | Shosanbetsuite | Ag3Sn |
1.AD.40 | Unnamed (Au2Hg) | Au2Hg |
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 Goldamalgam (of Chen et al.)
mindat.org URL:
https://www.mindat.org/min-6974.html
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References for Goldamalgam (of Chen et al.)
Reference List:
Localities for Goldamalgam (of Chen et al.)
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.
China | |
| Keqiao Chen et al. (1981) |
Philippines | |
| Shaofeng Huang (2011) |
USA | |
| Alfredo Petrov collection +1 other reference |