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Monazite Alteration in H2O +/- HCl +/- NaCl +/- CaCl2 Fluids at 150 degrees C and p(sat): Implications for Uranium Deposits

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Academic year: 2021

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Figure

Figure 1. Examples of intensive alteration of monazite by diagenetic/hydrothermal brines from the  basement of the Proterozoic Athabasca Basin (Canada): (a) Back-scattered electron image of a   monazite grain (grey), which is nearly completely altered to T
Figure 2. Starting experimental material: (a) Photograph of the natural monazite monocrystal from  Manangotry (Madagascar) selected for this study (sample PK6 in [70])
Table 2. Experimental conditions, experiment numbers (#) and observations by SEM of monazite grains after one month experiments.
Figure 3.  SEM  images  of  the  different  alteration  features on monazite grains after one month  experiments: (a) etch pits in EXP# 7; (b) etch pits in EXP# 5; and (c,d) roughened surfaces in EXP# 4
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