| Reference Type | Journal (article/letter/editorial) |
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| Title | The uranium-bearing mineral bolivarite: new data and a second occurrence |
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| Journal | Mineralogical Magazine |
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| Authors | Van Wambeke, L. | Author |
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| Year | 1971 (December) | Volume | 38 |
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| Page(s) | 418-423 | Issue | 296 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_38/38-296-418.pdf+ |
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| DOI | doi:10.1180/minmag.1971.038.296.03Search in ResearchGate |
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| Mindat Ref. ID | 6499 | Long-form Identifier | mindat:1:5:6499:0 |
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| GUID | 77fcbe26-ca30-425e-b4c6-80ad9885780f |
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| Full Reference | Van Wambeke, L. (1971) The uranium-bearing mineral bolivarite: new data and a second occurrence. Mineralogical Magazine, 38 (296) 418-423 doi:10.1180/minmag.1971.038.296.03 |
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| Plain Text | Van Wambeke, L. (1971) The uranium-bearing mineral bolivarite: new data and a second occurrence. Mineralogical Magazine, 38 (296) 418-423 doi:10.1180/minmag.1971.038.296.03 |
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| In | (1971, December) Mineralogical Magazine Vol. 38 (296) Mineralogical Society |
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| Abstract/Notes | SummaryA second occurrence of the mineral bolivarite has been found in the Kobokobo pegmatite, Kivu, Republic of Congo (Kinshasa). This amorphous mineral was previously considered to be evansite. Its physical properties are: weak birefringence; biaxial to uniaxial positive; n = 1·50–1·51; specific gravity 1·97–2·05; hardness 3 to 3½.Three chemical analyses have been performed on the Congolese material. The general formula of the mineral is Al2(PO4)(OH)3.4–5 H2O. Both known bolivarites from Spain and Congo contain abnormal amounts of U. The bright green UV fluorescence is due to the presence of U. The DTA curve of the Congolese bolivarite is given. Its genesis is discussed. This uranium-bearing mineral may be an indicator of uranium mineralization in Spain. |
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