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Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascari
Regional Level Types
Sakoany depositDeposit
KatsepyCommune
MitsinjoDistrict
BoenyRegion
MadagascarCountry

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Key
00998110014946253591200.jpg
Artisinal mining for Celestite in Madagascar

Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar
04755270014946253657581.jpg
Artisinal mining for Celestite in Madagascar

Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar
00998110014946253591200.jpg
Artisinal mining for Celestite in Madagascar

Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar
04755270014946253657581.jpg
Artisinal mining for Celestite in Madagascar

Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar
00998110014946253591200.jpg
Artisinal mining for Celestite in Madagascar

Sakoany deposit, Katsepy, Mitsinjo, Boeny, Madagascar
Latitude & Longitude (WGS84):
15° 51' 18'' South , 46° 13' 50'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Mahajanga154,657 (2018)17.9km
Other/historical names associated with this locality:
Sankoany
Other Languages:
Malagasy:
Sakoany, Kaominin'i Katsepy, Distrikan'i Mitsinjo, Faritr'i Boeny, Madagasikara


A famous locality that has produced tons of magnificent celestine specimens. It is located near the village of Sakoany, on the western side of the banks of the Betsiboka River (where it empties into the Bombetoka Bay), at the northwestern coast of Madagascar. It is further located about 12 km south of Katsepy, the nearest administrative centre.

The celestine-bearing layer is found in a maximum 30 m thick lens between layers of crinoidal limestones and sandy greywacke of the Danien period (Jurassic, 65 million years old). The celestine occurs mainly as 2 different types: as geodes in varying sizes [Ratsimabazafy (1973) reported a geode about 60 cm in diameter and weighing 54 kg], and as crystal clusters up to 15 cm in diameter. The yearly production is about 15 tons (Pezzotta 1999).

The celestine was first discovered in 1967 and the diggings first started close to the seashore. Later they moved some hundreds of meters away to a higher level (+ 15 m). The locality consists of numerous small, irregular, up to 15 m deep holes in the ground.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

Celestine
Formula: SrSO4
Habit: Blocky to elongated, tapering and pointed, sharp wellformed crystals to 15 cm. Dominant forms: prism {210} moodified by {101} and {011}, + these and {100},{001},{111},{110}
Colour: Medium blue to pale blue to colorless with a bright luster
Reference: Humbert and Labumaz (1982) La célestite de Madagascar. Monde et Mínéraux 49 (septembre-octobre 1982): 4-7; Pezzotta, F. (1999) Madagaskar. Das Paradies der Mineralien und Edelsteine. Extra Lapis nr 17, pp 53-54 (German edition); Pezzotta, F. (2001) Madagascar: A Mineral and Gemstone Paradise. Extra Lapis English, 1, 88-89; Wilson, W.E. (2010) The Sakoany Celestine Deposit. Mineralogical Record, 41, 405-416; Pezzotta, F., and Pezzotta, S. (2020) La celestina. Un classico della mineralogia del Madagascar. Rivista Mineralogica Italiana, 44, 2 (2-2020), 94-108.

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Celestine7.AD.35SrSO4

List of minerals arranged by Dana 8th Edition classification

Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Celestine28.3.1.2SrSO4

List of minerals for each chemical element

OOxygen
O CelestineSrSO4
SSulfur
S CelestineSrSO4
SrStrontium
Sr CelestineSrSO4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Besaire, H. (1972) Géologie de Madagascar. I. Les terrains sédimentaires. Annales Géologiques de Madagascar, 35, 203 [a short notice].
Ratsimbazafy, J. R. (1973) Quelques considérations sur le gisement de celestite de Sakoany. Rapport annuel du Service Géologique de Madagascar, Antananarivo, 125-130.
Humbert and Labumaz (1982) La célestite de Madagascar. Monde et Minéraux, 49 (septembre-octobre 1982), 4-7.
Pezzotta, F. (1999) Madagaskar. Das Paradies der Mineralien und Edelsteine. Extra Lapis, 17, 88-89 [German edition].
Pezzotta, F. (2001) Madagascar: A Mineral and Gemstone Paradise. Extra Lapis English, 1, 88-89.
Wilson, W.E. (2010) The Sakoany Celestine Deposit. Mineralogical Record, 41, 405-416.
Pezzotta, F., and Pezzotta, S. (2020) La celestina. Un classico della mineralogia del Madagascar. Rivista Mineralogica Italiana, 44, 2 (2-2020), 94-108.

External Links


Other Regions, Features and Areas containing this locality

Madagascar
Somali PlateTectonic Plate

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