Adamite - Ojuela Mine, MapimÃ, Durango, Mexico
The Ojuela Mine, near Mapimí in the state of Durango, has produced some of the world’s finest examples of adamite. Several habits are known and include individual chisel-tipped prisms, clusters, divergent groups, sparkling drusy crusts and as fine spherical aggregates on brown-red limonite gossan. The translucent to transparent crystals are likewise variable with respect to color and are commonly brightly colored yellow, yellow-green, golden-tan, blue-green, or purple. Many specimens show color zonation and much of the adamite from Mapimí is strongly fluorescent in UV light.
The most widely known specimens consist of wheel like aggregates of greenish-yellow crystals highly contrasted against a rich brown-red matrix. Among the most prized specimens, though, are the divergent clusters of prismatic, gemmy deep purple tipped crystals found in 1981 on level 6 in the San Judas Chimney.
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