Dragon Minerals - Update December 16, 2018

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Gypsum/Calcite pseudomorph after Glauberite
Camp Verde, Camp Verde District, Yavapai County, Arizona
Cabinet - 12.1 x 8.2 x 5.4 cm (4.8 x 3.2 x 2.1 inches)
328 grams (0.72 pounds)
Specimen status: Sold

The Camp Verde locality has long been a classic location for pseudomorphs after glauberite. Most of the pseudomorphs consist of a single, sharp crystal, or an intergrown group. Here we have a rather large intergrown group, notable for its size, snow-white color, somewhat satiny luster, and complete lack of damage. It has no point of contact, so (as is common with Camp Verde pseudomorphs) this is a floater. Although these pseudomorphs are often identified as gypsum, my experiments have shown some effervesce in acid. Most do not easily or completely dissolve in acid, but very rarely, complete dissolution occurs. Thus I conclude these pseudomorphs are composed of a gypsum/calcite mixture whose ratio varies from specimen to specimen. No Arizona or pseudomorph collection is complete without one of these. This specimen has many display possibilities that do not need a stand.

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