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Riampotsy, Itremo massif, Mangataboahangy, Ambatofinandrahana, Amoron'i Mania, Madagascari
Regional Level Types
RiampotsyQuarry
Itremo massifMassif
MangataboahangyCommune
AmbatofinandrahanaDistrict
Amoron'i ManiaRegion
MadagascarCountry

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Key
Latitude & Longitude (WGS84):
20° 28' South , 46° 27' East
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Ambatofinandrahana25,997 (2018)38.0km
Other Languages:
Malagasy:
Riampotsy, Tangorombohitr'Itremo, Kaominin'i Mangataboahangy, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Madagasikara


The dumortierite locality often labelled "Riampotsy" is refering to a unnamed pegmatite situated about 3 km SE of the village of Riampotsy, about 40 km NV of the town Ambatonfinandrahana in the Central Highland of Madagascar.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Fianarantsoa Province, MadagascarProvince

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 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:

'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Habit: small grains
Colour: yellow
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 34
Beryl
Formula: Be3Al2(Si6O18)
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive , p 34
Dumortierite
Formula: (Al,Fe3+)7(SiO4)3(BO3)O3
Habit: fibrous masses emballed in quartz
Colour: lavender blue to blackblue
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive , p 34
'Feldspar Group'
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive
Kyanite
Formula: Al2(SiO4)O
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 34
Lazulite
Formula: MgAl2(PO4)2(OH)2
Habit: as inclusions in massive quartz
Colour: blue
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive , p 34
Quartz
Formula: SiO2
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive
Sillimanite
Formula: Al2(SiO4)O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Colour: black
Description: "tourmaline noire"
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 34

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
Lazulite8.BB.40MgAl2(PO4)2(OH)2
Group 9 - Silicates
Beryl9.CJ.05Be3Al2(Si6O18)
Dumortierite9.AJ.10(Al,Fe3+)7(SiO4)3(BO3)O3
Kyanite9.AF.15Al2(SiO4)O
Sillimanite9.AF.05Al2(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Feldspar Group'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)2Zq
Lazulite41.10.1.1MgAl2(PO4)2(OH)2
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Kyanite52.2.2c.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with (BO3)
Dumortierite54.1.2.1(Al,Fe3+)7(SiO4)3(BO3)O3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Feldspar Group'-
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
H LazuliteMgAl2(PO4)2(OH)2
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
OOxygen
O BerylBe3Al2(Si6O18)
O Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O ApatiteCa5(PO4)3(Cl/F/OH)
O LazuliteMgAl2(PO4)2(OH)2
O KyaniteAl2(SiO4)O
O SillimaniteAl2(SiO4)O
O QuartzSiO2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mg LazuliteMgAl2(PO4)2(OH)2
AlAluminium
Al BerylBe3Al2(Si6O18)
Al Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Al LazuliteMgAl2(PO4)2(OH)2
Al KyaniteAl2(SiO4)O
Al SillimaniteAl2(SiO4)O
SiSilicon
Si BerylBe3Al2(Si6O18)
Si Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si KyaniteAl2(SiO4)O
Si SillimaniteAl2(SiO4)O
Si QuartzSiO2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P LazuliteMgAl2(PO4)2(OH)2
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Emberger, A.(1954): Etude géologique des feuilles Midongy-Ouest et Malaimbandy. Travaux du Bureau Géologique, Servoice Géologique, Tananarive, Madagascar nr 53 [cited in Behier (1960)]
Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871


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