| Classification |
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|
| Species: | Hydroxycalciomicrolite |
| Formula: | Ca1.5Ta2O6(OH) |
| Chemical Analyses: |
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| Oxide wt%: | | 1 | 2 | 3 |
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| Na2O | 0.00 % | 0.00 % | 0.00 % |
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| CaO | 14.00 % | 14.00 % | 4.00 % |
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| UO2 | 16.00 % | 15.00 % | 15.00 % |
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| ThO2 | 0.00 % | 0.00 % | 0.00 % |
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| TiO2 | 5.00 % | 4.00 % | 5.00 % |
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| Fe2O3 | 0.00 % | 0.00 % | 0.00 % |
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| Nb2O5 | 18.00 % | 18.00 % | 18.00 % |
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| Ta2O5 | 41.00 % | 41.00 % | 39.00 % |
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| H2O | 2.00 % | 3.00 % | 15.00 % |
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| Total: | 96.00 % | 95.00 % | 96.00 % |
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|
| Empirical formulas: | | 1 | [Ca1.23U0.30(H2O)0.21Na0.10]?1.84(Ta0.92Nb0.68Ti0.34Fe0.06)?2O6.00[(OH)0.69O0.31]?1.00 on the basis of Nb+Ti+Ta+Fe=2 |
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| Sample references: | |
| 1 | - | Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1 |
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| 2 | - | Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1 |
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| 3 | - | Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1 |
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| Habit: | octahedral crystals or anhedral grains up to 10mm across |
| Colour: | dark brown to amber yellow |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Hydroxycalciomicrolite data |
| Locality Data: | Click here to view Atagoyama, Koriyama City, Fukushima Prefecture, Japan |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 964796 |
| Long-form Identifier: | 1:3:964796:1 |
| GUID (UUID V4): | 0 |
| References |
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Matsubara, S., Miyawaki, R., Yokoyama, K., Momma, K., Shigeoka, M., and Hashimoto, E. (2013) Pyrochlore and microlite in a pegmatite at Atagoyama, Koriyama City, Fukushima Prefecture, Japan. Bulletin of the National Museum of Nature and Science, Ser. C, 39, 1–6. |
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