Aragonito
Aragonito is a mineral with formula CaCO₃, in the Carbonatos group. This specimen comes from Mina La Pesquera, Minglanilla, Cuenca, Castilla-La Mancha, España.
Description
Reddish-brown aragonite column with very good, strong vitreous lustre, partially coated by small secondary crystals. The prismatic morphology is very well developed, and the contrast in texture between the main prism and the aggregates gives the specimen a very sculptural character.
About Aragonito
Aragonite is a calcium carbonate that crystallises in the orthorhombic system, commonly forming prisms or twins with pointed terminations. It is less stable than calcite and can transform into it over time, but its crystal forms make it much valued in collections.
About the locality
In Minglanilla, Cuenca, aragonites occur in veins and lodes within Triassic limestones and marls, producing brown or reddish prismatic crystals. La Pesquera is a classic locality that has yielded specimens well regarded for their lustre and architecture.
Technical data
- Catalogue No.
- 0612
- Internal reference
- X0322
- Composition
- CaCO₃
- Name
- Aragonito
- Group
- Carbonatos
- Category
- Lucimera
- Mine
- Mina La Pesquera
- District / Municipality
- Minglanilla
- Province
- Cuenca
- Region
- Castilla-La Mancha
- Country
- España
- Etymology
- From the place name "Aragón", where it was first described in 1790.
- Quality
- Muy buena
- Value trend
- Estable
Related specimens
- Abellaíta — España
- Abernathyita — España
- Abernathyita — España
- Abernathyita — España
- Aerenita — España
- Aerinita (fibrosa) — España
- Analcima — España
- Analcima — España