Imalo, Andrembesoa, Betafo District, Vakinankaratra, Madagascari
| Regional Level Types | |
|---|---|
| Imalo | - not defined - |
| Andrembesoa | Commune |
| Betafo District | District |
| Vakinankaratra | Region |
| Madagascar | Country |
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Latitude & Longitude (WGS84):
20° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~36km
Köppen climate type:
Mindat Locality ID:
2266
Long-form identifier:
mindat:1:2:2266:1
GUID (UUID V4):
2464a732-2b42-4a23-8308-1fc7892bbf01
Other Languages:
Malagasy:
Imalo, Kaominin' Andrembesoa, Distrikan'i Betafo, Vakinankaratra, Madagasikara
A granite pegmatite (NYF-type) hosted in marbles known for hambergite specimens and located south of Betafo, beside the river Mania. Specimens with phenakite crystals embedded in milkwhite quartz with amazonite crystals were found close to the classic Imalo locality at the beginning of the 21st century.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Beryl Formula: Be3Al2(Si6O18) Colour: white; pink |
| ⓘ Danburite Formula: CaB2Si2O8 |
| ✪ Hambergite Formula: Be2(BO3)(OH) Description: A. Lacroix (1912) mentions a single crystal that measured 9 x 5,5 x 3 cm |
| ⓘ Microcline Formula: K(AlSi3O8) References: |
| ⓘ Microcline var. Amazonite Formula: K(AlSi3O8) References: |
| ⓘ Phenakite Formula: Be2SiO4 Colour: white;colorless Description: frozen in quartz matrix with amazonite References: |
| ⓘ 'Pyrochlore Supergroup' Formula: A2-mD2X6-wZ1-n References: |
| ⓘ Quartz Formula: SiO2 Colour: milkwhite References: |
| ⓘ 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z References: |
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 6 - Borates | |||
| ⓘ | Hambergite | 6.AB.05 | Be2(BO3)(OH) |
| Group 9 - Silicates | |||
| ⓘ | Phenakite | 9.AA.05 | Be2SiO4 |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Microcline var. Amazonite | 9.FA.30 | K(AlSi3O8) |
| ⓘ | 9.FA.30 | K(AlSi3O8) | |
| ⓘ | Danburite | 9.FA.65 | CaB2Si2O8 |
| Unclassified | |||
| ⓘ | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
| ⓘ | 'Pyrochlore Supergroup' | - | A2-mD2X6-wZ1-n |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Hambergite | Be2(BO3)(OH) |
| Be | Beryllium | |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| Be | ⓘ Hambergite | Be2(BO3)(OH) |
| Be | ⓘ Phenakite | Be2SiO4 |
| B | Boron | |
| B | ⓘ Danburite | CaB2Si2O8 |
| B | ⓘ Hambergite | Be2(BO3)(OH) |
| B | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | Oxygen | |
| O | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Danburite | CaB2Si2O8 |
| O | ⓘ Hambergite | Be2(BO3)(OH) |
| O | ⓘ Microcline | K(AlSi3O8) |
| O | ⓘ Phenakite | Be2SiO4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| Al | Aluminium | |
| Al | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Microcline | K(AlSi3O8) |
| Si | Silicon | |
| Si | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Danburite | CaB2Si2O8 |
| Si | ⓘ Microcline | K(AlSi3O8) |
| Si | ⓘ Phenakite | Be2SiO4 |
| Si | ⓘ Quartz | SiO2 |
| K | Potassium | |
| K | ⓘ Microcline var. Amazonite | K(AlSi3O8) |
| K | ⓘ Microcline | K(AlSi3O8) |
| Ca | Calcium | |
| Ca | ⓘ Danburite | CaB2Si2O8 |
Other Regions, Features and Areas containing this locality
Madagascar
- Ankaratra Volcanic RangeVolcanic Range
- ⭔Antananarivo ProvinceProvince
Somali PlateTectonic Plate
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
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References
Lacroix, Alfred (1912) Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar) Bulletin de Minéralogie, 35 (2) 76-84 doi:10.3406/bulmi.1912.3497pp.79-80 - on hambergite
