X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range
Abstract Powder X-ray and optical data have been recorded for a sample of exceptionally rare earth-poor eudialyte (Na 12 (Ca, REE) 6 (Fe 2+ ,Mn,Mg) 3 Zr 3 (Zr,Nb) x [Si 9 O 27−y (OH) y ] 2 [Si 3 O 9 ] 2 (C1,F) z , with x = 0. 1–0.9, y = 1–3 and z = 0.7–1.4) from a pegmatitic vein associated with the...
| Published in: | Powder Diffraction |
|---|---|
| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1990
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| Subjects: | |
| Online Access: | https://doi.org/10.1017/s0885715600015402 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0885715600015402 |
| _version_ | 1857874525491822592 |
|---|---|
| author | Johnson, Neil E. Gunter, Mickey E. Solie, Diana N. Knowles, Charles R. |
| author_facet | Johnson, Neil E. Gunter, Mickey E. Solie, Diana N. Knowles, Charles R. |
| author_sort | Johnson, Neil E. |
| collection | Cambridge University Press |
| container_issue | 2 |
| container_start_page | 89 |
| container_title | Powder Diffraction |
| container_volume | 5 |
| description | Abstract Powder X-ray and optical data have been recorded for a sample of exceptionally rare earth-poor eudialyte (Na 12 (Ca, REE) 6 (Fe 2+ ,Mn,Mg) 3 Zr 3 (Zr,Nb) x [Si 9 O 27−y (OH) y ] 2 [Si 3 O 9 ] 2 (C1,F) z , with x = 0. 1–0.9, y = 1–3 and z = 0.7–1.4) from a pegmatitic vein associated with the peralkaline Windy Fork granite in the north–central Alaska range. The eudialyte is uniaxial positive with ω = 1.6062(2), ε = 1.6138 (3) and microprobe analyses indicate that the sum of REE + Yis less than 0.1 weight percent. Refined unit cell dimensions are: a = 14.2572(4), c = 30.1338(27), D x = 2.67, F 30 = 128 (0.006, 42), M 20 = 76. An indexed powder diffraction pattern is given. |
| format | Article in Journal/Newspaper |
| genre | alaska range Alaska |
| genre_facet | alaska range Alaska |
| id | crcambridgeupr:10.1017/s0885715600015402 |
| institution | Open Polar |
| language | English |
| op_collection_id | crcambridgeupr |
| op_container_end_page | 92 |
| op_doi | https://doi.org/10.1017/s0885715600015402 |
| op_rights | https://www.cambridge.org/core/terms |
| op_source | Powder Diffraction volume 5, issue 2, page 89-92 ISSN 0885-7156 1945-7413 |
| publishDate | 1990 |
| publisher | Cambridge University Press (CUP) |
| record_format | openpolar |
| spelling | crcambridgeupr:10.1017/s0885715600015402 2026-02-22T15:16:37+00:00 X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range Johnson, Neil E. Gunter, Mickey E. Solie, Diana N. Knowles, Charles R. 1990 https://doi.org/10.1017/s0885715600015402 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0885715600015402 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Powder Diffraction volume 5, issue 2, page 89-92 ISSN 0885-7156 1945-7413 journal-article 1990 crcambridgeupr https://doi.org/10.1017/s0885715600015402 2026-01-27T15:08:26Z Abstract Powder X-ray and optical data have been recorded for a sample of exceptionally rare earth-poor eudialyte (Na 12 (Ca, REE) 6 (Fe 2+ ,Mn,Mg) 3 Zr 3 (Zr,Nb) x [Si 9 O 27−y (OH) y ] 2 [Si 3 O 9 ] 2 (C1,F) z , with x = 0. 1–0.9, y = 1–3 and z = 0.7–1.4) from a pegmatitic vein associated with the peralkaline Windy Fork granite in the north–central Alaska range. The eudialyte is uniaxial positive with ω = 1.6062(2), ε = 1.6138 (3) and microprobe analyses indicate that the sum of REE + Yis less than 0.1 weight percent. Refined unit cell dimensions are: a = 14.2572(4), c = 30.1338(27), D x = 2.67, F 30 = 128 (0.006, 42), M 20 = 76. An indexed powder diffraction pattern is given. Article in Journal/Newspaper alaska range Alaska Cambridge University Press Powder Diffraction 5 2 89 92 |
| spellingShingle | Johnson, Neil E. Gunter, Mickey E. Solie, Diana N. Knowles, Charles R. X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title | X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title_full | X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title_fullStr | X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title_full_unstemmed | X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title_short | X-Ray and Optical Data for a Rare Earth–Poor Eudialyte from the North–Central Alaska Range |
| title_sort | x-ray and optical data for a rare earth–poor eudialyte from the north–central alaska range |
| url | https://doi.org/10.1017/s0885715600015402 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0885715600015402 |