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Londonite from
Antandrokomby pegmatite, Manandona Valley, Sahatany Pegmatite Field (Mt Ibity area), Vakinankaratra Region, Antananarivo Province, Madagascar

Classification
Species:Londonite
Comments:Occurs in saccharoidal albite or in cavities. Many crystals contain patchy zones of londonite and rhodizite that are only visible by back-scattered electron imaging.
Habit:Dodecahedron {110}, tristetrahedron {211}, tetrahedron{111} and cube {100} (the last form is rare}
Colour:Milky to pale yellow crystals up to 1 cm
Confirmation
Validity:Valid - Type Locality
References
References:Simmons, W. B; Pezzotta, F; Falster, A.U & Webber, K. L. (2001): Londonite, a new mineral species: The Cs-dominant analogue of Rhodizite from the Antandrokomby granitic pegmatite, Madagascar. Canadian Mineralogist 39: 747-755/ MinRec 33:165]
Data
Mineral Data:Click here to view Londonite data
Locality Data:Click here to view Antandrokomby pegmatite, Manandona Valley, Sahatany Pegmatite Field (Mt Ibity area), Vakinankaratra Region, Antananarivo Province, Madagascar
Nearest other occurrences of Londonite
17.7km (11.0 miles) A β“˜Manjaka (Ampakita; Sahananana), Sahatany Valley, Sahatany Pegmatite Field (Mt Ibity area), Vakinankaratra Region, Antananarivo Province, Madagascar
40.1km (24.9 miles) B β“˜Tetezantsio pegmatites (Antetezantsio pegmatites), Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar
Mineral and/or Locality  
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