Log In
Andilamena Quartz Quarries, Andranotokana Massif, Andilamena District, Alaotra-Mangoro, Madagascari
| Regional Level Types | |
|---|---|
| Andilamena Quartz Quarries | Group of Quarries |
| Andranotokana Massif | Massif |
| Andilamena District | District |
| Alaotra-Mangoro | Region |
| Madagascar | Country |
This page is currently not sponsored. Click here to sponsor this page.
Type:
Group of Quarries
Other/historical names associated with this locality:
Anohlamena
Name(s) in local language(s):
Fitondrahan' ny vatokaranana, Andranotokana Massif, Andilamena District, Alaotra-Mangoro Region, Toamasina Province (Tamatave), Madagascar
Several thousand specimens of Japanese law twin quartz, up to 25 cm large, were uncovered by the company Tropic Stone SARL, from June 2000 to February 2001 in a breccia complex, in the Andranotokana Massif, north of the village of Andilamena, north of Ambatondrazaka. The mineralization is linked to a hydrothermal activity associated with tectonics in a metamorphic context (Forner et al. 2001).
Specimens from this locality are often labelled with the locality "Andilamena" which is the name/center of the district where the specimens were found.
Locality spelled erroneously "Anohlamena" in Moore (2001).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities4 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ 'Ferrierite Subgroup' |
| ⓘ Goethite Formula: Fe3+O(OH) Habit: needles Description: as inclusions in amethyst scepters References: |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Amethyst Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Quartz var. Sceptre Quartz Formula: SiO2 |
| ⓘ Quartz var. Smoky Quartz Formula: SiO2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz var. Amethyst | 4.DA.05 | SiO2 |
| ⓘ | var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | var. Smoky Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Sceptre Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Ferrierite Subgroup' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | Oxygen | |
| O | ⓘ Quartz var. Amethyst | SiO2 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Quartz var. Smoky Quartz | SiO2 |
| O | ⓘ Quartz var. Sceptre Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Amethyst | SiO2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Quartz var. Smoky Quartz | SiO2 |
| Si | ⓘ Quartz var. Sceptre Quartz | SiO2 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
Localities in this Region
- Alaotra-Mangoro
- Andilamena District
- Andranotokana Massif
- Andilamena Quartz Quarries
- Andranotokana Massif
- Andilamena District
Other Regions, Features and Areas containing this locality
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
Andilamena Quartz Quarries, Andranotokana Massif, Andilamena District, Alaotra-Mangoro, Madagascar