BerylEl Mesquite, Mun. de Tecáte, Baja California, Mexico
Sinkankas reported gemmy aquamarine & golden beryl in small prismatic crystals from small vugs in a granitic pegmatite near El Mesquite village, about 27 km S of El Condor turnoff from Highway 2 (El Condor is ca. 49 km E of Tecate. The pegmatite occurs between Jassay and El Topo and is mineralogically simple, consisting largely of feldspar with some quartz, schorl, mica, rare purplish apatite, albite, and euhedral prisms of pale greenish yellow to pale golden-yellow beryl, ranging from acicular to some about 7 mm in diameter to 77mm long. Some are smooth-faced, others etched and tapered. Most contain abundant inclusions of extremely small size which render the bases opaque or only translucent but in a sharp transition: these disappear toward the terminations, the latter being transparent.
References
Emerald and Other Beryls, John Sinkankas,1981 p.481
Mineral List
9 entries listed. 4 valid minerals.
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