Adamita
Adamita is a mineral with formula Zn₂AsO₄(OH), in the Arseniatos group. This specimen comes from Mina Ojuela, Mapimí, Durango, México and joined the Terrium collection in 1975.
Description
Good specimen of pale green adamite, well terminated and with excellent lustre on the typical red limonite matrix from Mapimí. The arrangement of the crystals at multiple angles and in cavities makes a fixed display position difficult; it is ideal to view in 360°. Very intense fluorescence under UV light.
History of this specimen
Although it has its original tag for species and provenance we've been unable to relate to any previous specific ownership.
About Adamita
Adamite is a secondary zinc arsenate, typical of the oxidation zones of zinc- and arsenic-rich deposits.
About the locality
The Ojuela Mine, at Mapimí, is a classic locality for adamite, cuproadamite, mimetite and hemimorphite.
Technical data
- Catalogue No.
- 0038
- Composition
- Zn₂AsO₄(OH)
- Name
- Adamita
- Group
- Arseniatos
- Category
- Lucimera
- Matrix
- Limonita
- Mine
- Mina Ojuela
- District / Municipality
- Mapimí
- Region
- Durango
- Country
- México
- Size (cm)
- 6.8 x 4.7 x 3.5
- Weight
- 81.4 g
- Acquired
- 1975
- Ex-collection
- Desconocido > Fran Becerra
- Etymology
- A classic etymological false friend: although it shares the root "adamas" with diamond, adamite is simply named in honour of Gilbert-Joseph Adam, who brought the first samples from Chañarcillo, the type locality that allowed the species to be identified.
- Quality
- Muy buena
- Value trend
- Estable
Related specimens
- Abernathyita — España
- Abernathyita — España
- Abernathyita — España
- Adamita — México
- Adamita — México
- Adamita (Cuprífera) — Grecia
- Adamita — México
- Adamita — México