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Ambodibakoly emerald deposit, Ambalahosy Nord, Mananjary District, Vatovavy, Madagascari
Regional Level Types
Ambodibakoly emerald depositDeposit
Ambalahosy NordCommune
Mananjary DistrictDistrict
VatovavyRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
21° 19' 24'' South , 47° 54' 21'' East
Latitude & Longitude (decimal):
-21.32351,47.90592
GeoHash:
G#: mh4ndnhj8
GRN:
S15E32
Type:
Deposit
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Ifanadiana17,543 (2018)28.3km
Mananjary27,686 (2018)46.3km
Vohimanitra6,000 (2018)46.9km
Mindat Locality ID:
27840
Long-form identifier:
mindat:1:2:27840:0
GUID (UUID V4):
0
Other Languages:
Malagasy:
Karieran' Ambodibakoly, Kaominin' Ambalahosy Nord, Distrikan' Mananjary, Faritr'i Vatovavy Fitovinany, Madagasikara


An alluvial emerald deposit that produced emeralds from about 1975 to 1982. One of several emerald mines in the northern zone of the Mananjary emerald mining district (Cheilletz et al. 2001).
The emerald mineralisation occurs within phlogopitite developed at the contact between pegmatite and basic/ultrabasic rocks, characterised by reactions zones at the contact with serpentinite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


9 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 Diagram

Detailed Mineral List:

ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Beryl var. Emerald
Formula: Be3Al2(Si6O18)
ⓘ Calcite
Formula: CaCO3
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Edenite
Formula: NaCa2Mg5(Si7Al)O22(OH)2
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
Description: An 60-100
ⓘ Quartz
Formula: SiO2
ⓘ 'Scapolite'
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘBeryl9.CJ.05Be3Al2(Si6O18)
ⓘvar. Emerald9.CJ.05Be3Al2(Si6O18)
ⓘDiopside9.DA.15CaMgSi2O6
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘEdenite9.DE.15NaCa2Mg5(Si7Al)O22(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified
ⓘ'Scapolite'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
Beⓘ Beryl var. EmeraldBe3Al2(Si6O18)
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CalciteCaCO3
Oⓘ DiopsideCaMgSi2O6
Oⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Oⓘ Beryl var. EmeraldBe3Al2(Si6O18)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Garnet GroupX3Z2(SiO4)3
NaSodium
Naⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Alⓘ Beryl var. EmeraldBe3Al2(Si6O18)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ DiopsideCaMgSi2O6
Siⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Siⓘ Beryl var. EmeraldBe3Al2(Si6O18)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Garnet GroupX3Z2(SiO4)3
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ TitaniteCaTi(SiO4)O
MnManganese
Mnⓘ SpessartineMn32+Al2(SiO4)3

Other Regions, Features and Areas containing this locality

AfricaContinent
African Plate
Madagascar
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 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

Schwarz, Dietmar (1994) Emeralds from the Mananjary Region, Madagascar: Internal Features. Gems & Gemology, 30 (2) 88-101 doi:10.5741/gems.30.2.88
Kanis, Jan, Schwarz, Dietmar (2001) Smaragde aus Afrika. Extra Lapis 21. Christian Weise Verlag p.56-63.
Cheilletz, A., Sabot, B., Marchand, P., De Donato, P., Taylor, B., Archibald, D., Barres, O. , Andrianjaffy, J (2001) Emerald deposits in Madagascar: Two different types for one mineralizing event. European Union of Geosciences XI General Assembly, EUG XI. Symposium OS06 Mineralogy, Ore Geology and Mineral Resources. 547
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