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English: Beryl, Schiavinatoite, Apatite
Locality: Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar (Locality at mindat.org)
Size: miniature, 4.3 x 3.0 x 2.6 cm
This specimen is highlighted by a crystal of very rare, lustrous, black schiavinatoite, 1.0 cm across, a niobium, tantalum borate. The matrix is quartz and rubellite. This crystal is the most lustrous example of the species I have seen, as most are very dull in lustre. This is a newly named, extremely rare mineral from Madagascar. I obtained this in exchange from Dr. Pezzotta, who specializes in the minerals of Madagascar and I think could be safely considered the authority on finely crystallized rarities here...he told me these are among the largest fine crystals known for the species.
Deutsch: Beryll, Schiavinatoit, Apatit
Fundort: Antsongombato gem mine, FKT Antsentsindrano, Gemeinde Andrembesoa, Distrikt Betafo, Region Vakinankaratra, Antananarivo , Madagaskar (Fundort bei mindat.org)
Größe: 4.3 x 3.0 x 2.6 cm
Date before March 2010(2010-03)
Source Image: http://www.irocks.com/db_pics/pics/t07-106b.jpg, Description: http://www.mindat.org/photo-271702.html
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