Electrum
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Formula:
(Au, Ag)
Colour:
Pale yellow
Lustre:
Metallic
Name:
From the Greek ήλεκτρου (ílektroy) for "amber," in allusion to its colour.
Classification of Electrum
1.AA.05
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
A : Copper-cupalite family
1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
A : Copper-cupalite family
Physical Properties of Electrum
Metallic
Transparency:
Opaque
Colour:
Pale yellow
Comment:
As the Silver content increases, the colour pales
Streak:
pale yellow
Tenacity:
Malleable
Cleavage:
None Observed
Fracture:
Hackly
Chemical Properties of Electrum
Formula:
(Au, Ag)
Elements listed:
Synonyms of Electrum
Other Language Names for Electrum
Varieties of Electrum
| Argentocuproaurite | Two grains found of essentially cuprian electrum |
| Argentocuproaurite-I | A grain from Noril'sk. |
| Argentocuproaurite-II | A grain of cuprian electrum from Talnakh deposit, Russia. |
Common Associates
Associated Minerals Based on Photo Data:
| Quartz | 19 photos of Electrum associated with Quartz on mindat.org. |
| Gold | 8 photos of Electrum associated with Gold on mindat.org. |
| Silver | 7 photos of Electrum associated with Silver on mindat.org. |
| Sphalerite | 6 photos of Electrum associated with Sphalerite on mindat.org. |
| Uytenbogaardtite | 5 photos of Electrum associated with Uytenbogaardtite on mindat.org. |
| Acanthite | 5 photos of Electrum associated with Acanthite on mindat.org. |
| Pyrite | 4 photos of Electrum associated with Pyrite on mindat.org. |
| Malachite | 3 photos of Electrum associated with Malachite on mindat.org. |
| Aguilarite | 3 photos of Electrum associated with Aguilarite on mindat.org. |
| Baryte | 3 photos of Electrum associated with Baryte on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
| 1.AA.05 | Aluminium | Al |
| 1.AA.05 | Copper | Cu |
| 1.AA.05 | Gold | Au |
| 1.AA.05 | Lead | Pb |
| 1.AA.05 | Nickel | Ni |
| 1.AA.05 | Silver | Ag |
| 1.AA.05 | UM2004-08-E:AuCuPd | (Cu,Pd,Au) |
| 1.AA.05 | UM1991-06-E:AuCu | Au3Cu |
| 1.AA.10a | Auricupride | Cu3Au |
| 1.AA.10b | Tetra-auricupride | AuCu |
| 1.AA.10a | Cuproauride | Cu3Au |
| 1.AA.15 | Anyuiite | AuPb2 |
| 1.AA.15 | Khatyrkite | (Cu,Zn)Al2 |
| 1.AA.15 | Iodine | I2 |
| 1.AA.15 | Novodneprite | AuPb3 |
| 1.AA.15 | UM1985-02-E:AlZn | (Zn,Cu)Al2 |
| 1.AA.20 | Cupalite | (Cu,Zn)Al |
| 1.AA.25 | Hunchunite | Au2Pb |
Fluorescence of Electrum
none
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.
References for Electrum
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pliny (77A.D.) 33: 23.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 89-91.
Internet Links for Electrum
mindat.org URL:
https://www.mindat.org/min-1365.html
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Please feel free to link to this page.
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Specimens:
The following Electrum specimens are currently listed for sale on minfind.com.
Ace Of Diamonds Mine, Liberty, Swauk District, Kittitas Co., Washington, USA