Magnesiotaaffeite-6N'3S X070005

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Record 386 of 550  

Name: Magnesiotaaffeite-6N'3S
RRUFF ID: X070005
Ideal Chemistry: Mg2BeAl6O12
Locality: Tunduru, Tanzania
Source: [view label]
Description: Pale lavendar cut gemstone, 0.65 cts, formerly known as musgravite-18R
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Quick search: [ All Magnesiotaaffeite-6N'3S samples (2) ]
Sample Description: Laser perpendicular to the girdle.

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RRUFF ID: X070005
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: X070005
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.678(7)Å    b: 5.678(7)Å    c: 41.15(5)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 1148.9(4)Å3    Crystal System: hexagonal

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REFERENCES for Magnesiotaaffeite-6N'3S

American Mineralogist Crystal Structure Database Record: [view record]

Anderson B W, Payne C J, Claringbull G F, Hey M H (1951) Taaffeite, a new beryllium mineral, found as a cut gemstone, Mineralogical Magazine, 29, 765-772   [view file]

Hudson D R, Wilson A F, Threadgold I M (1967) A new polytype of taaffeite — a rare beryllium mineral from the granulites of central Australia, Mineralogical Magazine, 36, 305-310   [view file]

Nuber B, Schmetzer K (1983) Crystal structures of ternary Be-Mg-Al oxides: taaffeite, BeMg3Al8O16, and musgravite, BeMg2Al6O12, Neues Jahrbuch für Mineralogie, Monatshefte, 1983, 393-402

Schmetzer, K (1983) Crystal chemistry of natural Be–Mg–Al-oxides: taaffeite, taprobanite, musgravite, Neues Jahrbuch für Mineralogie, Abhandlungen, 146, 15-28

Guinier A, Bokij G B, Boll-Dornberger K, Cowley J M, Durovic S, Jagodzinski H, Krishna P, DeWolff P M, Zvyagin B B, Cox D E, Goodman P, Hahn Th, Kuchitsu K, Abrahams S C, (1984) Nomenclature of polytype structures. Report of the International Union of Crystallography ad-hoc committee on the Nomenclature of discordered, modulated and polytype structures, Acta Crystallographica, A40, 399-404

Armbruster T (2002) Revised nomenclature of högbomite, nigerite, and taafeite minerals, European Journal of Mineralogy, 14, 389-395   [view file]

Grice J D, Ferraris G (2003) New minerals approved in 2002 and nomenclature modifications approved in 1998-2002 by the Commission on the New Minerals and Mineral Names, International Mineralogical Association, The Canadian Mineralogist, 41, 795-802   [view file]

Jambor J L, Roberts A C (2003) New mineral names, American Mineralogist, 88, 251-255   [view file]

Bernhard F, Hauzenberger C, Walter F, Kristiansen R (2008) Pseudosinhalite, magnesiotaaffeite-6N'3S and magnesiotaaffeite-2N'2S as replacement products of spinel in dolomite marble from Stubenberg, Styria, Austria, The Canadian Mineralogist, 46, 1195-1205   [view file]