| Locality type: | Exploration Area |
| Classification |
|---|
|
| Type: | Nepheline-syenite |
| Age information |
|---|
|
| Maximum recorded age: | 24.2 ± 0.6 Ma |
| Minimum recorded age: | 24.2 ± 0.6 Ma |
| Rock units: | | Unit | Recorded age | Geologic Time | Dating method | Reference |
|---|
| Nepheline-syenite | 24.2 ± 0.6 Ma | Oligocene | U-Pb dating of zircon | Estrade, G., B |
|
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
|---|
|
| Mineral Data: | Click here to view Nepheline-syenite data |
| Locality Data: | Click here to view Ampasibitika, Antsirabe, Ambanja District, Diana, Madagascar |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 1234311 |
| Long-form Identifier: | 1:3:1234311:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Nepheline-syenite |
|---|
|
|
| 9.9km (6.1 miles) | ⓘAmbohimirahavavy Alkaline Complex, Antsirabe, Ambanja District, Diana, Madagascar |
| 26.7km (16.6 miles) | ⓘBezavona Massif, Anorotsangana, Ambanja District, Diana, Madagascar |
| 33.0km (20.5 miles) | ⓘAnkitsika Complex, Analalava District, Sofia, Madagascar |
| 41.2km (25.6 miles) | ⓘAmpangorinana, Nosy Komba, Nosy Be, Diana, Madagascar |
| References |
|---|
|
Estrade, Guillaume, Béziat, Didier, Salvi, Stefano, Tiepolo, Massimo, Paquette, Jean-Louis, Rakotovao, Soatsitohaina (2014) Unusual evolution of silica-under- and -oversaturated alkaline rocks in the Cenozoic Ambohimirahavavy Complex (Madagascar): Mineralogical and geochemical evidence. Lithos, 206. 361-383 doi:10.1016/j.lithos.2014.08.008 |
|
