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Pic Boby area, Vohitsaoka, Ambalavao, Haute Matsiatra, Madagascari
Regional Level Types
Pic Boby areaArea
VohitsaokaCommune
AmbalavaoDistrict
Haute MatsiatraRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
22° 10' 59'' South , 46° 52' 59'' East
Latitude & Longitude (decimal):
-22.18333,46.88333
GeoHash:
G#: mh13fceks
GRN:
S15E31
Locality type:
Area
Köppen climate type:
Cfb : Temperate oceanic climate
Other Languages:
Malagasy:
Imarivolanitra, Kaominan'i Vohitsaoka, Distrikan' Ambalavao, Matsiatra Ambony, Madagasikara


Potassic to ultrapotassic syenites. In the Pic Boby area, the main rock type contains pyroxene (diopside) and amphibole (edenite), and is nearly silica-saturated. A subordinate type is an undersaturated diopside- and phlogopite-bearing syenite (Nédélec & Grujic 2001).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 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:

ⓘ Edenite
Formula: NaCa2Mg5(Si7Al)O22(OH)2
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74
ⓘ Fluorapatite
Formula: Ca5(PO4)3F
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74
ⓘ Ilmenite
Formula: Fe2+TiO3
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74
ⓘ Titanite
Formula: CaTi(SiO4)O
Reference: Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘIlmenite4.CB.05Fe2+TiO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘEdenite9.DE.15NaCa2Mg5(Si7Al)O22(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘTitanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
ⓘ'Pyroxene Group'-ADSi2O6

List of minerals for each chemical element

HHydrogen
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
OOxygen
Oⓘ Pyroxene GroupADSi2O6
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Oⓘ FluorapatiteCa5(PO4)3F
Oⓘ IlmeniteFe2+TiO3
Oⓘ TitaniteCaTi(SiO4)O
FFluorine
Fⓘ FluorapatiteCa5(PO4)3F
NaSodium
Naⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
MgMagnesium
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
AlAluminium
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
SiSilicon
Siⓘ Pyroxene GroupADSi2O6
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Siⓘ TitaniteCaTi(SiO4)O
PPhosphorus
Pⓘ FluorapatiteCa5(PO4)3F
KPotassium
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ EdeniteNaCa2Mg5(Si7Al)O22(OH)2
Caⓘ FluorapatiteCa5(PO4)3F
Caⓘ TitaniteCaTi(SiO4)O
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ IlmeniteFe2+TiO3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Nédélec, A. & Grujic, D. (2001) Un nouvel exemple de magmatisme potassique à ultrapotassique: les syénites de l’Andringitra (Madagascar). Earth and Planetary Sciences, 332:739–74

Other Regions, Features and Areas containing this locality

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.
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