Wavellite

specimen number:
2063820

location:
Montgomery County quarry, Mauldin Mt., Montgomery Co., Arkansas, USA

description:
Four perfect hemispherical crystal groupings of lustrous green wavellite, the largest measuring 1.3 cm in diameter, scattered across the top of a meta-chert matrix. This is in great condition. The specimen comes with a previous label from the collection of Ray DeMark.

The Montgomery County Quarry at Mauldin Mountain in Arkansas is primarily known as a road material and aggregate quarry excavated within the rugged Paleozoic sedimentary formations of the Ouachita Mountains. Regionally, intense tectonic folding and hot hydrothermal fluid circulation through fractured novaculite and shale formations deposited rich mineral veins. While commercial operations supplied crushed stone for regional infrastructure, the quarry gained legendary status among mineral collectors and museum curators for yielding world-class cabinet specimens of rare phosphate minerals, most notably vibrant green and blue radiating globular aggregates of wavellite, planerite, and associated rare-earth secondary phases .

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