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Befanamite

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About BefanamiteHide

Formula:
Sc2Si2O7
Colour:
Grayish green
Hardness:
6 - 7
Specific Gravity:
3.492
Name:
Named after the first recorded locality, the Befanamo pegmatite, Madagascar.
A variety of Thortveitite

First discovered in 1918, in the eluvials of the Befanamo pegmatite, Madagascar by the prospector J. B. Rasamoel. The sample was a 10 x 3 cm fragment of a larger crystalgroup. He sent the sample together with other specimens from Befanamo for identification to the french mineralogist Alfred Lacroix who recognized it's similarity with thortveitite described in 1911 from Norway. A chemical analysis done by G.Urbain showed this to be a thortveitite with a higher content of scandium (Sc) and zirconium (Zr) and a lower content of yttrium (Y) than the Norwegian thortveitite. Lacroix considered it as a variety of thortveitite and named it as befanamite.



Physical Properties of BefanamiteHide

Colour:
Grayish green
Hardness:
6 - 7 on Mohs scale
Density:
3.492 g/cm3 (Measured)    

Chemical Properties of BefanamiteHide

Formula:
Sc2Si2O7

Chemical AnalysisHide

Oxide wt%:
 1
SiO244.13 %
Sc2O341.76 %
ZrO29.96 %
Fe2O32.20 %
Al2O32.62 %
Total:100.67 %
Sample references:
IDLocalityReference
1Befanamo pegmatite, Beronono, Anjozorobe, Analamanga, MadagascarLacroix, A. (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. Augustin Challamel (Éditeur), Paris. 624p. [p.500-502]

First Recorded Occurrence of BefanamiteHide

Other Language Names for BefanamiteHide

German:Befanamit
Spanish:Befanamita

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BefanamiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lacroix, A. (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. Augustin Challamel (Éditeur), Paris. 624p. [p.500-502]
Foshag, W.F (1926) New Minerals, New species. American Mineralogist: 11: 137

Internet Links for BefanamiteHide

Localities for BefanamiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Madagascar (FRL)
 
  • Analamanga
    • Anjozorobe
      • Beronono
Lacroix, A. (1922) Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. Augustin Challamel (Éditeur), Paris. 624p. [p.500-502]; Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, 19-20
  • Betsiboka
    • Tsaratanàna
      • Bekapaika Commune
        • Berere Pegmatite Field
Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p. 20
  • Boeny
    • Ambato-Boeni
      • Andranomamy
        • Kelimaizina
Behier, J. (1960): Travaux mineralogiques. In Besaire, H. (ed): Rapport Annuel du Service Geologique pour 1960. Republique Madagascar, Tananarive. 181-199
 
Mineral and/or Locality  
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