Mineral: Phenakite
Locality: Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar
Dimensions: 5,5 x 5,0 x 20,0 cm
Description: Main crystal size : 20,0 cm
Large transparent colorless and doubly terminated crystal showing a di-hexagonal cross section (with alternating of wide and narrow faces). Some internal veils are present. The top clearly shows the classical phenakite twinning with the reentrant angles and striations in alternating directions between adjacent faces.
MIM number 1689
Photographer : Augustin de Valence (Ainu)
Publication: "Rocks & Minerals: Vol. 98, No.6 Nov/Dec 2023"
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