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3.5" Cerussite Crystals on Botryoidal Hemimorphite - Congo
This is a lustrous formation cerussite crystals on blue botryoidal hemimorphite. This specimen was collected from M'fouati in the Bouenza Department of the Republic of the Congo. The base of this specimen has been cut flat for presentation.
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.
About Cerussite
Cerussite is a lead-carbonate mineral with the chemical formula PbCO3, and is an important ore of lead. It is a common weathering product of galena, explaining why it is typically extracted from oxidized zones of lead ore deposits. It can form into a variety of different structures, sometimes in fibrous patterns and other times in granular aggregations, though it generally forms vitreous pseudo-hexagonal crystals. Its colors vary depending on composition and structure: it is most commonly colorless, white, grey and green-tinted.
Cerussite is a lead-carbonate mineral with the chemical formula PbCO3, and is an important ore of lead. It is a common weathering product of galena, explaining why it is typically extracted from oxidized zones of lead ore deposits. It can form into a variety of different structures, sometimes in fibrous patterns and other times in granular aggregations, though it generally forms vitreous pseudo-hexagonal crystals. Its colors vary depending on composition and structure: it is most commonly colorless, white, grey and green-tinted.
SPECIES
Hemimorphite & Cerussite
LOCATION
M'fouati, Bouenza Department, Republic of the Congo
SIZE
3.5 x 2.2"
CATEGORY
ITEM
#148437
