Ópalo Menilito
Ópalo is a mineral with formula SiO₂·nH₂O, in the Mineraloides (Óxidos) group. This specimen comes from Embalse de Camarillas, Agramón, Hellín, Albacete, Castilla-La Mancha, España and joined the Terrium collection in 2024.
Description
Menilite opal on matrix; smooth, matt, peanut-shaped nodule.
About Ópalo
A variety of common opal of sedimentary origin, formed by accumulation of silica in lacustrine and diagenetic environments, producing compact botryoidal forms.
About the locality
The Camarillas Reservoir is noted for its menilite opals with matt texture and colours ranging from light grey to whitish. Their genesis is linked to silica-rich lacustrine deposits in a sedimentary setting.
Technical data
- Catalogue No.
- 0141
- Composition
- SiO₂·nH₂O
- Name
- Ópalo
- Variety
- Menilito
- Group
- Mineraloides (Óxidos)
- Category
- Meritum Persé
- Matrix
- Caliza
- Mine
- Embalse de Camarillas
- District / Municipality
- Agramón, Hellín
- Province
- Albacete
- Region
- Castilla-La Mancha
- Country
- España
- Size (cm)
- 9 x 3.5 x 1.5
- Weight
- 61 g
- Acquired
- 2024
- Etymology
- From Sanskrit "upala", meaning "precious stone".
- 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