May 14 2014
Frankdicksonite is a halide mineral. It was first discovered in 1974 in the Carlin mine, 50km northwest of Elko in Lynn district, Eureka Co. Nevada, USA.
It was named after Frank Wilson Dickson, Professor of Geochemistry at Stanford University in California, USA, for his work on low-temperature ore deposits.
Properties of Frankdicksonite
The following are the key properties of Frankdicksonite:
- Cell Data
- Space Group: Fm3m
- a = 6.1964(2)
- Z = 4
- Crystal Data
- Cubic
- Point Group: 4/m32/m
- Crystals, to 4mm, are euhedral cubes
- X-ray Powder Pattern: 3.581 (100), 2.191 (56), 1.870 (47), 3.099 (21), 1.422 (20), 1.266 (20), 1.047 (14)
- Chemical Composition
| Elements |
Content |
| Ca |
0.00 |
| Sr |
0.24 |
| Ba |
77.98 |
| F |
21.41 |
| Total |
99.63 |
- Optical Properties
- Optical Class: Isotropic
- n = 1.475(1)
- Estimated Properties
| Electron density |
Bulk density (electron density) = 4.13 g/cm3
note: Specific gravity of Frankdicksonite = 4.89 g/cm3 |
| Photoelectric |
PEFrankdicksonite = 372.02 barns/electron
U = PEFrankdicksonite x ρElectron density = 1535.66 barns/cm3 |
| Fermion index |
Fermion index = 0.13
Boson index = 0.87 |
Radioactivity
|
Frankdicksonite is not radioactive
|
How to Identify Frankdicksonite
Frankdicksonite is a transparent colorless mineral, having perfect cleavage, vitreous luster, and white streak. The mineral has a density of 4.89 and a hardness of 3.
Global Distribution
Frankdicksonite is distributed in Carlin mine, 50km northwest of Elko, Lynn district in Eureka Co. Nevada, USA.
Occurrence of Frankdicksonite and Useful Mineral Association
Frankdicksonite is encased in artz veinlets, cutting a gold deposit in silicified carbonaceous arsenic-rich limestone. It is closely related to quartz.
References