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Chemical formula
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Ca 2 Fe 3+ Al 2 (Si 2 O 7 )(SiO 4 )O(OH) |
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Crystalline system
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monoclinic |
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Class
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silicates |
| Origin | Alicante, Spain |
| Size | 2.00-3.00cm |
Dark green Epidote crystals.
For geologists it is used as an indicator mineral to differentiate porphyry copper and epithermal with high and low sulphidation.
Used exclusively for collecting.
The mineral includes a label with the name and origin and is attached to a 4 cm square cardboard box.
*The price is per unit (a single cardboard box of the four shown in the image)
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.