MALDONITE
A pinkish silver-white mineral consisting of gold and bismuth;
Occurs in massive granular form and was first described prior to 1959.
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Chemical Composition |
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Chemical Formula: |
Au2Bi |
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Composition: |
Molecular Weight = 602.91 gm
Bismuth 34.66 % Bi
Gold 65.34 % Au
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Environment: |
Found in gold-quartz veins, probable high temperature
mineral. Intergrown with gold and bismuth. |
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Locality: |
Nugget reef, near Maldon, Victoria, Australia.
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Name Origin: |
Named for the locality. |
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Crystallography |
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Axial Ratios: |
a:b:c = |
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Cell Dimensions: |
a = 7.958, Z = 8; V = 503.98 Den(Calc)= 15.89 |
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Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m)
Space Group: F d3m |
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X Ray Diffraction: |
By Intensity(I/Io): 2.41(1), 1.537(0.6), 2.3(0.5) |
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Image |
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Gold in quartz.
Image Source: R.Weller/Cochise College |
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