Analcime

specimen number:
2102199

location:
Two-Hug Quarry, Benton Co., Oregon, USA

description:
Quite choice miniature for the species and locality, glassy partly gemmy crystals of analcime measuring to 3.0 cm in size in a cluster without matrix. In good condition.

The Two-Hug Quarry, located near Corvallis in Benton County, Oregon, is a notable Pacific Northwest mineral locality famous for its aesthetic zeolite specimens. Geologically, the quarry is situated within the Eocene aged Siletz River Volcanics, a thick sequence of basaltic pillow lavas and breccias. The mineralization occurred as late stage hydrothermal fluids filled vesicles and fractures in the basalt, depositing a variety of minerals including heulandite, mordenite, analcime, and exceptionally sharp, white to translucent crystals of clinoptilolite. Historically, the site was operated as a small scale road metal quarry during the mid 20th century, providing crushed rock for local forestry and infrastructure projects. While it was never a major industrial producer, it gained significant fame among regional collectors in the 1970s and 1980s for the quality and abundance of its micromounts and cabinet sized specimens. Today, the quarry is largely inactive and reclaimed by vegetation, but it remains a classic reference locality for the mineralogy of the Oregon Coast Range.

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