Conicalcita
Conicalcita is a mineral with formula CaCu(AsO₄)(OH), in the Arseniatos group. This specimen comes from Mina Previsión, Fiñana, Almería, Andalucía, España and joined the Terrium collection in 2025.
Description
Intense green colour; botryoidal habit. On dark ferruginous matrix. Cavity with globular texture.
History of this specimen
I bought it at the La Unión fair.
About Conicalcita
Conichalcite (CaCu(AsO4)(OH)) is a copper-calcium arsenate. It is rare in well-developed, continuous botryoidal aggregates as in this case. At this locality it occurs as globular coatings of very saturated green, with a matt aspect.
About the locality
Finite material, no longer recoverable. These pieces were at the entrance to the mine, at the adit mouth, in a vein that resembled an arcade and was left untouched for years so that collectors and the curious could enjoy it… until one day it was found broken, and no more can be taken. Mina Previsión is, or was, Spain’s most emblematic locality for this habit—grape-bunch botryoids—in a matt, saturated green on dark ferruginous matrix.
Technical data
- Catalogue No.
- 0494
- Internal reference
- T0314
- Composition
- CaCu(AsO₄)(OH)
- Name
- Conicalcita
- Group
- Arseniatos
- Matrix
- Ferruginosa (Limonita/Goethita)
- Mine
- Mina Previsión
- District / Municipality
- Fiñana
- Province
- Almería
- Region
- Andalucía
- Country
- España
- Acquired
- 2025
- Etymology
- From the Greek roots κονία ('konis', dust) and χαλκος ('chalkos', copper), chosen by Breithaupt and Fritzsche to reflect its physical appearance and metal content.
- Quality
- Buena
- Value trend
- Estable
Related specimens
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