Jun 5 2014
Topics Covered
Introduction to Jeromite
Properties of Jeromite
How to Identify Jeromite
Global Distribution
Occurrence of Jeromite and Useful Mineral Association
References
Introduction to Jeromite
Chemical Formula – As(S,Se)2
Jeromite is an amorphous mineral, composed of sulfur, selenium, and arsenic.
It was named after its place of discovery, the United Verde Mine in Jerome, Arizona, USA.
Properties of Jeromite
The following are the key properties of Jeromite:
- Cell Data
- Space Group: n.d
- Z = n.d.
- Crystal Data
- Amorphous to X-rays
- Point Group: n.d
- Globular coating on rock fragments
- Chemical Composition
| Elements |
Content |
| As |
46.8 |
| S |
40.8 |
| Se |
7.5 |
| Sb |
trace |
| Te |
trace |
| insol. |
4.9 |
| Total |
100 |
- Estimated Properties
| Photoelectric |
PEJeromite = 53.13 barns/electron |
| Fermion index |
Fermion index = 0.02
Boson index = 0.98 |
| Radioactivity |
Jeromite is not radioactive |
How to Identify Jeromite
Jeromite occurs in a range of colors, from red to black to cherry-red. It has a reddish-black streak, and its fractures are characterized by smooth, curved surfaces.
Global Distribution
Jeromite is widely distributed in the United Verde mine, Jerome, Yavapai Co. Arizona, USA.
Occurrence of Jeromite and Useful Mineral Association
Jeromite occurs as coating rock fragments below iron hoods, placed over vents through which SO2 gases are released.
References