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2.9" Botryoidal Sky-Blue Hemimorphite - Congo
This is a beautiful, 2.9" wide, botryoidal formation of dark to light blue hemimorphite, collected from the N'tola Mine in the Republic of the Congo (Brazzaville).
About Hemimorphite From The Congo
Bemimorphite from the Democratic Republic of the Congo is prized for its vivid sky-blue to turquoise coloration and delicate crystal forms. These specimens typically occur as botryoidal crusts, sparkling druzy surfaces, or finely crystallized aggregates lining fractures and cavities in the host rock. The color is caused by trace copper within hemimorphite’s zinc silicate composition, giving Congolese material a brighter, more saturated blue than most other localities.
Hemimorphite is a hydrous zinc silicate that forms in the oxidation zones of zinc ore deposits, often replacing earlier zinc minerals. It is named for its “half-shaped” crystals, which display different terminations at each end—a distinctive but often subtle feature in well-crystallized examples. In the copper-rich deposits of the DRC, hemimorphite is commonly found associated with malachite, smithsonite, dioptase, and limonite. Its glassy to silky luster, intricate surface textures, and geological significance make blue hemimorphite from the Congo a standout display mineral for collectors.
Bemimorphite from the Democratic Republic of the Congo is prized for its vivid sky-blue to turquoise coloration and delicate crystal forms. These specimens typically occur as botryoidal crusts, sparkling druzy surfaces, or finely crystallized aggregates lining fractures and cavities in the host rock. The color is caused by trace copper within hemimorphite’s zinc silicate composition, giving Congolese material a brighter, more saturated blue than most other localities.
Hemimorphite is a hydrous zinc silicate that forms in the oxidation zones of zinc ore deposits, often replacing earlier zinc minerals. It is named for its “half-shaped” crystals, which display different terminations at each end—a distinctive but often subtle feature in well-crystallized examples. In the copper-rich deposits of the DRC, hemimorphite is commonly found associated with malachite, smithsonite, dioptase, and limonite. Its glassy to silky luster, intricate surface textures, and geological significance make blue hemimorphite from the Congo a standout display mineral for collectors.
SPECIES
Hemimorphite
LOCATION
N'tola Mine, Mindouli, Mindouli District, Pool Department, Republic of the Congo
SIZE
2.9 x 1.4"
CATEGORY
ITEM
#326853
