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Ambatomameno emerald mine, Andonabe Commune, Mananjary District, Vatovavy Fitovinany Region, Fianarantsoa Province, Madagascar

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Name(s) in local language(s):Karieran' Ambatomameno, Kaominin' Andonabe, Distrikan' Mananjary, Faritra Vatovavy Fitovinany, Faritanin'i Fianarantsoa, Madagasikara
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 21° South , 47° East (est.)
Margin of Error:~11km
Locality type:Mine
Köppen climate type:Cfa : Humid subtropical climate


One of several emerald mines in the southern zone of the Mananjary emerald mining district (Cheilletz et al. 2001).
The mines of the south zone are mainly located in the Andonabe Commune, south of Irondo and the RN25 road, south and east of the Analatsitevena mountain.

Erronously spelled as "Ambadamanino" in Schwartz (1994).
Listed in Schwartz (1994, cited from Thomas 1993) as being one of the emerald mines in the area around the Morafeno emerald mine. = the south zone of the Mananjary emerald district.

The emerald mineralisation occurs within phlogopitite developed at the contact between pegmatite and basic/ultrabasic rocks, characterised by pegmatites intruding highly folded and boudinaged amphibolites.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


7 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

'Amphibolite'
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Beryl
Formula: Be3Al2(Si6O18)
Reference: Emeralds of the World English extraLapis Vol. 2 2002 pp24-35 ; Schwartz, D. (1994): Emeralds from the Mananjary region, Madagascar: Internal Features. Gems & Gemology: Summer 1994: 88-101
Beryl var: Emerald
Formula: Be3Al2(Si6O18)
Reference: Emeralds of the World English extraLapis Vol. 2 2002 pp24-35 ; Schwartz, D. (1994): Emeralds from the Mananjary region, Madagascar: Internal Features. Gems & Gemology: Summer 1994: 88-101
'Biotite schist'
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Calcite
Formula: CaCO3
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
'Chlorite Group'
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
'commodity:Gemstones'
Reference:  ;  
Molybdenite
Formula: MoS2
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
'Pegmatite'
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Pyrite
Formula: FeS2
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Quartz
Formula: SiO2
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 9 - Silicates
'Anorthite'9.FA.35Ca(Al2Si2O8)
'Beryl'9.CJ.05Be3Al2(Si6O18)
var: Emerald9.CJ.05Be3Al2(Si6O18)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Amphibolite'-
'Biotite schist'-
'Chlorite Group'-
Pegmatite-
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Amphibolite'-
Anorthite-Ca(Al2Si2O8)
Beryl
var: Emerald
-Be3Al2(Si6O18)
'Biotite schist'-
'Chlorite Group'-
'Pegmatite'-
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H PhlogopiteKMg3(AlSi3O10)(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be Beryl (var: Emerald)Be3Al2(Si6O18)
CCarbon
C CalciteCaCO3
OOxygen
O AnorthiteCa(Al2Si2O8)
O BerylBe3Al2(Si6O18)
O CalciteCaCO3
O Beryl (var: Emerald)Be3Al2(Si6O18)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O QuartzSiO2
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
MgMagnesium
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al AnorthiteCa(Al2Si2O8)
Al BerylBe3Al2(Si6O18)
Al Beryl (var: Emerald)Be3Al2(Si6O18)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Si AnorthiteCa(Al2Si2O8)
Si BerylBe3Al2(Si6O18)
Si Beryl (var: Emerald)Be3Al2(Si6O18)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si QuartzSiO2
SSulfur
S MolybdeniteMoS2
S PyriteFeS2
KPotassium
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca CalciteCaCO3
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe PyriteFeS2
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
MoMolybdenum
Mo MolybdeniteMoS2
WTungsten
W Wolframite(Fe2+)WO4 to (Mn2+)WO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Thomas, A. (1993): The emerald mines of Madagascar. South African Gemmologist: 7 (3): 3-11
Schwartz, D. (1994): Emeralds from the Mananjary region, Madagascar: Internal Features. Gems & Gemology: Summer 1994: 88-101
Cheilletz, A. et al. (2001): OS06 : TUpm30 : G5 : Emerald Deposits in Madagascar: Two Differents Types for one Mineralising Event:EUG XI.Symposium OS06 Mineralogy, Ore Geology and Mineral Resources.
Grundmann, G. (2001): Die Smaragde der Welt. Extra Lapis 21: 26-37 [german version]


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