|
Chemical formula
|
Faith 2 OR 3 |
|
Crystalline system
|
trigonal |
|
Class
|
oxides |
| Origin | Kediet ej Jill, Mauritania |
| Size | 2.0-3.0cm |
Massive Oligisto (hematite) of reddish ocher color with metallic luster.
The Oligisto when it has an earthy formation is red ocher. It is used as the main ore to obtain iron. Also, being of the clayey type, since ancient times it has been used as a pigment, in paints and dyes.
The mineral includes a label with the name and origin and is attached to a cardboard box. 4 cm square.
*The price is per unit (a single cardboard box of the four shown in the photo)
Since the minerals are natural, you will receive a piece similar to the one in the photograph. The minerals come in cardboard boxes and are glued to a porex base with hot silicone; these can be removed using ethyl alcohol without damaging the mineral. The size is approximate.