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Details for article 7 of 14 found articles
| Title: |
Hiortdahlite from Jingera, New South Wales |
| Author: |
Eggleton, R. A. Halford, G. E. Beams, S. D. |
| Appeared in: |
Australian journal of earth sciences |
| Paging: | Volume 26 (1979) nr. 1-2 pages 81-85 |
| Year: |
1979 |
| Contents: |
Hiortdahlite from a fine-grained phonolite dyke in the Jingera Rock Syenite Complex, N.S.W. is triclinic Pl or Pi, a = 11.011 Å, b = 10.922 Å, c = 7.343 Å, α = 109.32°, β = 110.02°, γ = 83.49°. The unit cell contains (Ca8.38 Na4.10 Mn0.50 Zr2.27 Nb0.31 Ti0.05 Fe0.21 Y0.14) [Si8O28] (O1.58(OH)1.12 F5.30); S.G. = 3.309. The crystals are biaxial +ve, 2V = 86°, α = 1.658, β = 1.664, γ = 1.671, γ:z(100) = 35°, α:z(010) = 14.5°. Polysynthetic normal twinning on (010) is present in all crystals. Type material from Langesund Fjord, Norway has been re-investigated and found to have very similar properties, but is twinned on (100). |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 7 of 14 found articles
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