Table 1

Summary of pegmatite sample mineralogy, country-rock metamorphic zones and GPS coordinates (WGS84).

Locality Sample Metamorphic zone Mineralogy GPS coordinates
Y X
Petalite-rich pegmatites
Bajoca - Andalusite Qz, Kfs, Ab, Ptl, Ms, Znw, AGM, Ap, Fe-Mn-Pho, Cra-Goy, Cst, CGM 41.0019 -7.01709
Plombal P018 Andalusite Qz, Kfs, Ab, Ptl, Ms, Ap, Cst, CGM 40.9969 -6.92849
Hinojosa ALM-2 Biotite Qz, Kfs, Ab, Ptl, Ms, Ap, Cst, CGM 41.0042 -6.81802
Ramalha P016 Biotite Qz, Kfs, Ab, Ptl, Ms, AGM, Ap, Fe-Mn-Pho, Cst, CGM 41.0023 -7.00754
Li-mica-rich pegmatites
Ramalha-E ALM-3 Biotite Qz, Ab, Li-mica, Ms, KFs, AGM, Tpz, Cst, CGM 41.0027 -7.00684
- P010 Biotite Qz, Ab, Li-mica, (Spd), Ms, AGM, Ap, Cst, CGM 41.0152 -6.83753
Ramalha-W P017 Biotite-chlorite transition Qz, Kfs, Ab, Li-mica, Ms, Ap, Cst, PGM 41.0072 -7.01131
Feli MF1001c Chlorite Qz, Ab, Li-mica, Spd, AGM, Cst, CGM 41.0276 -6.88704

Qz: quartz, Kfs: K-feldspar, Ab: albite, Ptl: petalite, Spd: spodumene, Ms: muscovite; Znw: zinnwaldite, Ap: apatite; AGM: amblygonite-group mineral, Ap: apatite, Fe-Mn-Pho: Fe-Mn-phosphate, Cra-Goy: crandallite-goyazite; Tpz: topaz, Cst: cassiterite, CGM: columbite-group mineral, PGM: pyrochlore-group mineral. Spodumene occurrences were described in the vicinity of P010 pegmatite dyke (Vieira et al., 2011) but this mineral was not observed in investigated sample.

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