Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Cumengite

Cumengite（矿物名）

Pb21Cu20Cl42(OH)40.6H2O

Pb₂₁Cu₂₀Cl₄₂(OH)₄₀·6H₂O

This sample of cumengite is displayed in the Smithsonian Museum of Natural History. Cumengite is a chloride of copper and lead with the composition Pb21Cu20Cl42(OH)40.6H2O. The large sample at left is about 12 cm across. This mineral been also labeled cumengeite.

这种cumengite样品陈列在史密森尼自然历史博物馆中。cumengite是一种铜和铅的氯化物，其化学式为Pb₂₁Cu₂₀Cl₄₂(OH)₄₀·6H₂O。左侧较大的样品宽约12厘米。这种矿物也被称为cumengite。

Mindat: Cumengite

Mindat: Cumengite（专名或术语）
Minerals
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