Reviews
3.5" Sharp Calcite Pseudomorph after Glauberite - Camp Verde, Arizona
This is a fascinating, 3.5" wide pseudomorph of calcite that has replaced the original glauberite crystals, retaining razor-sharp form. It was collected from the Camp Verde mining district in Yavapai County, Arizona. Under shortwave UV light, the crystals exhibit a vibrant white fluorescence.
About Calcite Pseudomorphs after Glauberite From Camp Verde
These fascinating mineral specimens from Camp Verde, Arizona are classic examples of calcite pseudomorphs after glauberite—a striking mineralogical transformation where one mineral replaces another while preserving the original crystal shape.
Originally formed as sharp, well-defined crystals of glauberite (a sodium-calcium sulfate), the unstable glauberite later dissolved and was replaced molecule by molecule with calcite. Glauberite typically forms in evaporite deposits in arid lake environments, where mineral-rich waters concentrate through evaporation. While it can develop large, well-shaped crystals under these conditions, glauberite is highly unstable when exposed to changing humidity or groundwater. Because it readily alters or dissolves, intact glauberite crystals are uncommon in surface exposures and are rarely found well preserved in collections.
The result of this instability is the beautifully preserved crystal forms seen here—distinctive, often tabular or wedge-shaped geometries that reflect the original glauberite crystals, but are now composed entirely of durable calcite. This replacement process locks in the original shape while creating a far more stable mineral specimen.
Camp Verde is well known among collectors for producing exceptional pseudomorph specimens, often displaying crisp crystal outlines, creamy white to tan coloration, and occasional translucent calcite surfaces. Some pieces exhibit subtle surface textures or sparkling druse that add to their visual appeal. These specimens are excellent examples of mineral replacement in action and represent one of Arizona’s most classic and desirable pseudomorph localities.
These fascinating mineral specimens from Camp Verde, Arizona are classic examples of calcite pseudomorphs after glauberite—a striking mineralogical transformation where one mineral replaces another while preserving the original crystal shape.
Originally formed as sharp, well-defined crystals of glauberite (a sodium-calcium sulfate), the unstable glauberite later dissolved and was replaced molecule by molecule with calcite. Glauberite typically forms in evaporite deposits in arid lake environments, where mineral-rich waters concentrate through evaporation. While it can develop large, well-shaped crystals under these conditions, glauberite is highly unstable when exposed to changing humidity or groundwater. Because it readily alters or dissolves, intact glauberite crystals are uncommon in surface exposures and are rarely found well preserved in collections.
The result of this instability is the beautifully preserved crystal forms seen here—distinctive, often tabular or wedge-shaped geometries that reflect the original glauberite crystals, but are now composed entirely of durable calcite. This replacement process locks in the original shape while creating a far more stable mineral specimen.
Camp Verde is well known among collectors for producing exceptional pseudomorph specimens, often displaying crisp crystal outlines, creamy white to tan coloration, and occasional translucent calcite surfaces. Some pieces exhibit subtle surface textures or sparkling druse that add to their visual appeal. These specimens are excellent examples of mineral replacement in action and represent one of Arizona’s most classic and desirable pseudomorph localities.
$49
SPECIES
Calcite & Glauberite
LOCATION
Camp Verde, Camp Verde Mining District, Yavapai County, Arizona
SIZE
3.5 x 2.1"
CATEGORY
ITEM
#353654
