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 is a calcium copper arsenate. It is rare in continuous, well-developed 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
The material was finite and is no longer recoverable. These specimens were at the mine entrance, at the adit mouth, in a vein that looked like an arcade that was left untouched for years so that collectors and onlookers could enjoy it, but one day it was found broken and no more can be collected. Mina Previsión is, or was, the most emblematic locality in Spain for this habit (grape-like), with that matt, saturated green on dark ferruginous matrix.
Technical data
- Catalogue No.
- 0314
- Composition
- CaCu(AsO₄)(OH)
- Name
- Conicalcita
- Group
- Arseniatos
- Matrix
- Ferruginosa (Limonita/Goethita)
- Mine
- Mina Previsión
- District / Municipality
- Fiñana
- Province
- Almería
- Region
- Andalucía
- Country
- España
- Size (cm)
- 6 x 3 x 3
- Weight
- 114.6 g
- Acquired
- 2025
- Etymology
- Greek roots κονία ('konis', dust) and χαλκος ('chalkos', copper), chosen by Breithaupt and Fritzsche to reflect its physical appearance and metallic content.
- Quality
- Buena
- Value trend
- Estable
Related specimens
- Abellaíta — España
- Abernathyita — España
- Abernathyita — España
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- Adamita — México
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- Adamita (Cuprífera) — Grecia
- Adamita — México