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Chemical formula
|
KAlSi 3 OR 8 |
|
Crystalline system
|
monoclinic |
|
Class
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silicates |
| Origin | Las Machotas, Zarzalejo |
| Size | 2.0-3.0cm |
Crystallized orthose in twinned form.
"Baveno twins" and "Carlsbad twins" can be seen, being some typical twins studied in crystallography.
Orthoclase is used in the porcelain industry, from the production of decorative objects and household items, to the manufacture of electrical insulators, dental pastes, special glasses and ceramic enamels.
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.