A.Lacroix (1912)suggest that the blue tourmaline mentioned by Duparc et al(1910)is a misnomer for "manganapatite" which occured abundantly at the locality.
Colour:
blue; Prusse blue
Quality of samples:
not specified / average specimens
Rarity at site:
Common
Confirmation
Validity:
Believed Valid
References
References:
Lacroix, A. (1912): "Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar), Soc. franc.min 35 , 76-78