| Reference Type | Journal (article/letter/editorial) |
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| Title | Oriented monazite inclusions in apatite porphyroblasts from the Hemlo gold deposit, Ontario, Canada |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Pan, Yuanming | Author |
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| Fleet, Michael E. | Author |
| Macrae, Neil D. | Author |
| Year | 1993 (December) | Volume | 57 |
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| Page(s) | 697-707 | Issue | 389 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_57/57-389-697.pdf+ |
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| DOI | doi:10.1180/minmag.1993.057.389.14Search in ResearchGate |
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| Mindat Ref. ID | 1978 | Long-form Identifier | mindat:1:5:1978:5 |
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| GUID | 0997549a-5ab9-4434-bae4-791136ee6cb7 |
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| Full Reference | Pan, Yuanming, Fleet, Michael E., Macrae, Neil D. (1993) Oriented monazite inclusions in apatite porphyroblasts from the Hemlo gold deposit, Ontario, Canada. Mineralogical Magazine, 57 (389) 697-707 doi:10.1180/minmag.1993.057.389.14 |
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| Plain Text | Pan, Yuanming, Fleet, Michael E., Macrae, Neil D. (1993) Oriented monazite inclusions in apatite porphyroblasts from the Hemlo gold deposit, Ontario, Canada. Mineralogical Magazine, 57 (389) 697-707 doi:10.1180/minmag.1993.057.389.14 |
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| In | (1993, December) Mineralogical Magazine Vol. 57 (389) Mineralogical Society |
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| Abstract/Notes | AbstractOriented inclusions of monazite occur in the dark core of apatite porphyroblasts in a muscovite schist from the Archaean Hemlo gold deposit, Ontario, Canada. The monazite inclusions are elongated along the b-axis and parallel to the c-axis of the apatite host; the complete orientation relationship of the monazite/apatite intergrowth is bMnz//cAp, cMnz//aAp. From analysis by SIMS and EMP, the dark core of the apatite porphyroblasts is depleted in LREE (LaN/YbN = 0.56). The monazite inclusions are correspondingly enriched in LREE, but markedly depleted in HREE, compared with monazite grains in the rock matrix and cross-cutting veins. The monazite inclusions precipitated by oriented reaction through rock-fluid interactions during a late hydrothermal alteration. Their unusual REE composition is probably related to both a preferential leaching of LREE from the dark core and a selective transfer of HREE out of the apatite porphyroblasts. |
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