[ gbv ] [ English ]
W
`Ξ (Κ^), W
`FCg, f
`Ξ, f
`FCg
ΆγΰιΏΉ«, ΕγΰιΏΉ«
Dumortierite [ͺκ Dum ]
©N: 1881N (tX, Ducarre'sΜΞκ), 1935N (ϊ{)
YnXg: W
`ΞΜYn (23)
- Al7BSi3O18
- (Al,Fe3+)7BSi3O16(O,OH)2
- [Al3+7][O3|BO3|(SiO4)3]21-
- Al => (Mg,Ti): Magnesiodumortierite
- FΚ: Β, ΒΞ,
- π:
- υς: KX
- §ί: §Ύ-Ό§Ύ
- J: {100}1ϋόΗD, {110}2ϋόsΎΔ
- dx: 7
- δd: 3.3
- »n: Ξϋ
- ΞΜ: mmm, Pnma
- iq: a=11.8, b=20.2, c=4.7