What's new in minerals: Bilbao and Barcelona Shows 1998

The Eugui quarry is well known for its magnificent dolomite specimens. However, magnesite is rarely found as crystals. This year, Pedro Echevarria, from Pamplona, obtained a reasonable suite of specimens, with lenticular magnesite crystals protruding from massive magnesite. And speaking of Eugui, in the Barcelona show Jordi Fabre had a large, fine dolomite specimen with crystals up to 7 cm scattered in matrix; these crystals have the rhombohedron heavily modified by other faces.

From outside of Spain, the most eyecatching specimens seen lately are the large amethyst druses, up to half a meter, from Mina Ayoreita, Rincon del Tigre, Santa Cruz province, Bolivia. In the Barcelona show, Intan S.L., owners of the mine, had a large selection of druses and loose crystals. Individual crystals are up to 10 cm, but the color is usually pale and irregularly distributed, and the crystal faces are lusterless.

Also interesting are the "faden" quartz from Dara Ismael Khan district, Waziristan, Pakistan. Miro, a French dealer, had specimens with crystals up to 10 cm. Luis Miguel Fernandez had green fluorites from Melchor Muzquiz, Coahuila, Mexico.

Copyright Mineralogical Record Mar/Apr 1999
Provided by ProQuest Information and Learning Company. All rights Reserved

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