Siderita
Siderita is a mineral with formula FeCO₃, in the Carbonatos group. This specimen comes from Socavón Santa Bárbara, El Arteal, Cuevas del Almanzora, Almería, Andalucía, España and joined the Terrium collection in 2024.
Description
Aggregates of olive-green lamellar crystals with a waxy luster, arranged in parallel layers on a reddish-brown ferruginous matrix. Presence of ocher and brown areas. High weight for a piece of this size, attributable to inclusions of sphalerite (ZnS) and galena (PbS).
History of this specimen
Earthy texture with bright inclusions on edges and fractures.
Technical data
- Catalogue No.
- 0480
- Internal reference
- T0088
- Composition
- FeCO₃
- Name
- Siderita
- Group
- Carbonatos
- Associations
- Esfalerita, Galena
- Mine
- Socavón Santa Bárbara, El Arteal
- District / Municipality
- Cuevas del Almanzora
- Province
- Almería
- Region
- Andalucía
- Country
- España
- Size (cm)
- 12 x 7 x 4
- Weight
- 390 g
- Acquired
- 2024
- Etymology
- From the Greek 'sideros' (iron).
- Quality
- Buena
- Value trend
- Estable
Related specimens
- Abellaíta — España
- Abernathyita — España
- Abernathyita — España
- Abernathyita — España
- Aerenita — España
- Aerinita (fibrosa) — España
- Analcima — España
- Analcima — España