A Ta,Ti–rich oxide mineral assemblage from the Nancy beryl–columbite–phosphate granitic pegmatite, San Luis, Argentina

Galliski, Miguel Ángel; Márquez-Zavalía, María Florencia; Škoda, Radek; Novák, Milan; Čopjaková, Renata; Pagano, Diego Sebastián

doi:10.1007/s00710-019-00673-z

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…Some companion minerals (cassiterite, tapiolite, minerals of the microlite group, minerals of the tantalitecolumbite series, and others) accompany WGM by replacing them [1,43,47]. Parallel and irregular intergrowths of WGM with tapiolite [27,47,51], rhythmically-zonal intergrowths with tantalite-(Mn) [32,37,45] are described; rims and inclusions of wodginite in Ta-rutile [51,53,58] are common. The co-occurrence of wodginite and other WGMtitanowodginite, ferrowodginite, tantalowodginite, ferrotitanowodginiteis not uncommon.…”

Section: Minerals Of the Wodginite Groupindicators Of Tantalum-bearin...mentioning

confidence: 98%

“…Based on a database, the composition of mineral species of the wodginite was calculated (Table 3, 4). Data on small concentrations of nonformulaic elements -F, Na, Mg, Al, Si, Zn, As, Sr, Y, Sb, REE, Pb, Bi, Th, U [16], that could be the result of microlite substitution [46,51,58], capture of mineral inclusions by microprobe and other analytical errors [3,26,65], were not taken into account in the calculations. Our review shows a satisfactory correspondence of published compositions of wodginite minerals (see Tables 1 and 2) to the classification of MMA minerals [16] (Fig.…”

Section: Chemical Composition Of Minerals Of the Wodginite Group In P...mentioning

confidence: 99%

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Wodginite as an indicator mineral of tantalum-bearing pegmatites and granites

Alekseev

2023

PMI

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In the composition of tantalum-niobates the tin-bearing wodginite group minerals (WGM) were found: wod-ginite, titanowodginite, ferrowodginite, ferrotitanowodginite, lithiowodginite, tantalowodginite, “wolframowodginite”. We reviewed the worldwide research on WGM and created a database of 698 analyses from 55 sources including the author's data. WGM are associated with Li-F pegmatites and Li-F granites. Wodginite is the most prevalent mineral, occurring in 86.6 % of pegmatites and 78.3 % of granites. The occurrence of WGM in granites and pegmatites differs. For instance, titanowodginite and “wolframowodginite” occur three times more frequently in granites than in pegmatites, whereas lithiowodginite and tantalowodginite do not appear in granites at all. The difference between WGM in granites and pegmatites is in finer grain size, higher content of Sn, Nb, Ti, W, and Sc; lower content of Fe3+, Ta, Zr, Hf; higher ratio of Mn/(Mn + Fe); and lower ratio of Zr/Hf. The evolutionary series of WGM in pegmatites are as follows: ferrowodginite → ferrotitanowodginite → titanowodginite → “wolframowodginite” → wodginite → tantalowodginite; in granites: ferrowodginite → ferrotitanowodginite → “wolframowodginite” → wodginite → titanowodginite. WGM can serve as indicators of tantalum-bearing pegmatites and granites. In Russia the promising sources of tantalum are deposits of the Far Eastern belt of Li-F granites containing wodginite.

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