| Regional Level Types | |
|---|---|
| Antsohamamy labradorite quarry | Quarry |
| Fotadrevo | Commune |
| Ampanihy District | District |
| Atsimo-Andrefana | Region |
| Madagascar | Country |


| ⓘAnorthite Formula:Ca(Al2Si2O8) References: |
| ⓘAnorthite var. Labradorite Formula:(Ca,Na)[Al(Al,Si)Si2O8] References: |
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| ⓘ | var. Labradorite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
| O | Oxygen | |
|---|---|---|
| O | ⓘAnorthite | Ca(Al2Si2O8) |
| O | ⓘAnorthite var.Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Na | Sodium | |
| Na | ⓘAnorthite var.Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Al | Aluminium | |
| Al | ⓘAnorthite | Ca(Al2Si2O8) |
| Al | ⓘAnorthite var.Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Si | Silicon | |
| Si | ⓘAnorthite | Ca(Al2Si2O8) |
| Si | ⓘAnorthite var.Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |
| Ca | Calcium | |
| Ca | ⓘAnorthite | Ca(Al2Si2O8) |
| Ca | ⓘAnorthite var.Labradorite | (Ca,Na)[Al(Al,Si)Si2O8] |