| Reference Type | Journal (article/letter/editorial) |
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| Title | Mineral phases and element composition of the copper hyperaccumulator lichen Lecanora polytropa |
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| Journal | Mineralogical Magazine |
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| Authors | Purvis, O. W. | Author |
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| Pawlik-Skowrońska, B. | Author |
| Cressey, G. | Author |
| Jones, G. C. | Author |
| Kearsley, A. | Author |
| Spratt, J. | Author |
| Year | 2008 (April) | Volume | 72 |
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| Issue | 2 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/minmag.2008.072.2.607Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 243911 | Long-form Identifier | mindat:1:5:243911:6 |
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| GUID | 0 |
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| Full Reference | Purvis, O. W., Pawlik-Skowrońska, B., Cressey, G., Jones, G. C., Kearsley, A., Spratt, J. (2008) Mineral phases and element composition of the copper hyperaccumulator lichen Lecanora polytropa. Mineralogical Magazine, 72 (2) 607-616 doi:10.1180/minmag.2008.072.2.607 |
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| Plain Text | Purvis, O. W., Pawlik-Skowrońska, B., Cressey, G., Jones, G. C., Kearsley, A., Spratt, J. (2008) Mineral phases and element composition of the copper hyperaccumulator lichen Lecanora polytropa. Mineralogical Magazine, 72 (2) 607-616 doi:10.1180/minmag.2008.072.2.607 |
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| Abstract/Notes | AbstractMineral phases and element localization were investigated in the vivid turquoise-coloured lichen, Lecanora polytropa, sampled from a psammite boulder in a wall supporting mine spoil at the abandoned copper mine, Riddarhyttan Kopparverke, southern Sweden. Normally pale yellowish (usnic acid), the lichen is turquoise coloured internally with bluish inclusions. X-ray mapping shows that Cu occurs on and within the lichen and does not coincide with P or S, suggesting that it is indeed associated with carbon or other elements not detected (or reported) using X-ray mapping. Scanning electron microscopy in back-scatter mode confirmed that the greatest Cu concentrations occur in the form of crystalline aggregates in coloured inclusions below the major internal turquoise layer with smaller Cu contents. X-ray diffraction with a position-sensitive detector (XRD-PSD) confirmed coloured crystalline aggregates consisted of the copper oxalate, moolooite. The study confirms the value of XRD-PSD as a non-destructive tool to characterize small (~50 μm) metal oxalate inclusions obtained from within lichen samples. |
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