Calcite Rosettes in Smithsonite Pseudomorphs after Sphalerite

Phosphorescent Calcite Rosettes in Smithsonite Pseudomorphs after Sphalerite – Monte Cristo Mine, Arkansas | 247 g

This fascinating mineral specimen from the historic Monte Cristo Mine in the Rush mining district of Arkansas features delicate, pale blue-white calcite rosettes nestled among intricate smithsonite pseudomorphs after sphalerite.

The specimen displays a wonderfully complex arrangement of rounded crystalline clusters, sparkling calcite formations, and earthy brown to golden matrix. The contrasting textures create a miniature mineral landscape, with delicate calcite rosettes scattered throughout naturally formed cavities and rugged, sculptural structures.

An especially captivating feature of this specimen is its phosphorescence! Its UV-reactive calcite adds another dimension of interest, with the ability to continue glowing briefly after ultraviolet illumination is removed. This unusual optical property makes the specimen particularly appealing to collectors of fluorescent and phosphorescent minerals.

The combination of distinctive crystal formations, fascinating mineral replacement structures, and its historic Arkansas locality makes this a wonderful addition to any mineral collection.

Minerals: Calcite Rosettes in Smithsonite Pseudomorphs after Sphalerite
Locality: Monte Cristo Mine, Rush Mining District, Arkansas, USA
Dimensions: 14 × 10 × 4 cm (5.51 × 3.94 × 1.57 inches)
Weight: 247 g (8.71 oz)
Mineral Class: Carbonates (Calcite and Smithsonite)
Special Property: Phosphorescent
Display: Natural matrix specimen