Ferroan wodginite from Ankole, south-west Uganda
Well formed crystals of ferroan wodginite occur in the pegmatite called 'Nyanga 2' in Ankole, Uganda. The crystals invariably represent penetration twins. The unit cell parameters are: a0 = 9.48 Å, b0 = 11.42 Å, c0 = 5.12 Å, ß = 90°30'. Space group: C2/c (Cc). The separation of the do...
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| Language: | English |
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Geological Society of Finland
1969-12-01
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| Series: | Bulletin of the Geological Society of Finland |
| Online Access: | http://www.geologinenseura.fi/bulletin/Volume41/sgs_bt_041_pages_065_069.pdf |
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doaj-5c2359f8de3b4d739c2408f608b93f0e2020-11-25T00:08:09ZengGeological Society of FinlandBulletin of the Geological Society of Finland0367-52111799-46321969-12-0141656910.17741/bgsf/41.005Ferroan wodginite from Ankole, south-west UgandaO. v. KnorringTh.G. SahamaM. LehtinenWell formed crystals of ferroan wodginite occur in the pegmatite called 'Nyanga 2' in Ankole, Uganda. The crystals invariably represent penetration twins. The unit cell parameters are: a0 = 9.48 Å, b0 = 11.42 Å, c0 = 5.12 Å, ß = 90°30'. Space group: C2/c (Cc). The separation of the doublets 221–221 and 222–222 is less pronounced than in the manganoan varieties of wodginite described in literature. The wodginite crystals contain inclusions of tapiolite. Microprobe analyses of the wodginite and of the tapiolite inclusions are given. http://www.geologinenseura.fi/bulletin/Volume41/sgs_bt_041_pages_065_069.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
O. v. Knorring Th.G. Sahama M. Lehtinen |
| spellingShingle |
O. v. Knorring Th.G. Sahama M. Lehtinen Ferroan wodginite from Ankole, south-west Uganda Bulletin of the Geological Society of Finland |
| author_facet |
O. v. Knorring Th.G. Sahama M. Lehtinen |
| author_sort |
O. v. Knorring |
| title |
Ferroan wodginite from Ankole, south-west Uganda |
| title_short |
Ferroan wodginite from Ankole, south-west Uganda |
| title_full |
Ferroan wodginite from Ankole, south-west Uganda |
| title_fullStr |
Ferroan wodginite from Ankole, south-west Uganda |
| title_full_unstemmed |
Ferroan wodginite from Ankole, south-west Uganda |
| title_sort |
ferroan wodginite from ankole, south-west uganda |
| publisher |
Geological Society of Finland |
| series |
Bulletin of the Geological Society of Finland |
| issn |
0367-5211 1799-4632 |
| publishDate |
1969-12-01 |
| description |
Well formed crystals of ferroan wodginite occur in the pegmatite called 'Nyanga 2' in Ankole, Uganda. The crystals invariably represent penetration twins. The unit cell parameters are: a0 = 9.48 Å, b0 = 11.42 Å, c0 = 5.12 Å, ß = 90°30'. Space group: C2/c (Cc). The separation of the doublets 221–221 and 222–222 is less pronounced than in the manganoan varieties of wodginite described in literature. The wodginite crystals contain inclusions of tapiolite. Microprobe analyses of the wodginite and of the tapiolite inclusions are given.
|
| url |
http://www.geologinenseura.fi/bulletin/Volume41/sgs_bt_041_pages_065_069.pdf |
| work_keys_str_mv |
AT ovknorring ferroanwodginitefromankolesouthwestuganda AT thgsahama ferroanwodginitefromankolesouthwestuganda AT mlehtinen ferroanwodginitefromankolesouthwestuganda |
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