Aug 29 2013
Averievite was named after Valerii Viktorovich Averev (1929–1968), a volcanologist, at the Institute of Volcanology, Petropavlovsk-Kamchatskii, Russia.
Properties of Averievite
The following are the key properties of averievite:
- Cell Data
- Space group: P3
- a = 6.375(1)
- b = 8.399(1)
- Z = 1.
- Crystal Data
- Hexagonal.
- Point group: 3
- As pseudohexagonal crystals, to 0.3 mm, with {1010}, {0110}, {0001}, {0001}
- X-ray Powder Pattern: 2.315 (10), 3.43 (7), 2.810 (4), 1.598 (4), 2.131 (3), 3.048 (2), 1.871 (2).
- Chemical Composition
| Elements |
Content 1 |
| CuO |
62.01 |
| V2O5 |
23.84 |
| Cl |
7.56 |
| Cs2 O |
3.35 |
| -O = Cl2 |
1.70 |
| MoO3 |
1.51 |
| K2O |
0.98 |
| Rb2O |
0.82 |
| Fe2O3 |
0.62 |
| Total |
98.99 |
- Optical Properties
- Optical Class: Uniaxial
- R1–R2: n.d.
- Estimated Properties
| Electron density |
Bulk density (electron density) = 3.75 g/cm3
note: Specific gravity of averievite = 4.01 g/cm3 |
| Photoelectric |
PEAverievite = 27.49 barns/electron
U = PEAverievite x electron density= 103.14 barns/cm3 |
| Fermion index |
Fermion index = 0.0004642542
Boson index = 0.9995357458 |
| Radioactivity |
Averievite is not radioactive.
|
How to Identify Averievite
Averievite can be identified in the field by its black color. This mineral has an opaque form with {100} good cleavage. Averievite has a resinous - metallic luster with a black streak. The density of averievite is 3.54 - 3.97 g/cm3 with a hardness of 4 – approximate to fluorite.
Global Distribution
Averievite is distributed mainly in Russia at the Tolbachik volcano, Kamchatka Peninsula.
Occurrence of Averievite and Useful Mineral Association
Averievite occurs in volcanic fumaroles. It is often associated with minerals such as alumoklyuchevskite, piypite, fedotovite, nabokoite, tenorite, lammerite, alarsite, and langbeinite.
References