Ilmenorutile and strüverite from Penikoja, Somero, SW Finland
This paper reports the occurrence of ilmenorutile (niobian rutile) and striiverite (tantalian rutile) in two specimens from the Penikoja pegmatite in Somero, SW Finland. One of the specimens contains strüverite as inclusions in pseudoixiolite, whereas the other specimen shows both ilmenorutile and s...
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| Format: | Article |
| Language: | English |
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Geological Society of Finland
1970-12-01
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| Series: | Bulletin of the Geological Society of Finland |
| Online Access: | http://www.geologinenseura.fi/bulletin/Volume42/sgs_bt_042_pages_033_036.pdf |
| Summary: | This paper reports the occurrence of ilmenorutile (niobian rutile) and striiverite (tantalian rutile) in two specimens from the Penikoja pegmatite in Somero, SW Finland. One of the specimens contains strüverite as inclusions in pseudoixiolite, whereas the other specimen shows both ilmenorutile and strüverite in association with columbite. Microprobe analyses of the minerals concerned are presented.
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| ISSN: | 0367-5211 1799-4632 |