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。

Birnessite

比尔尼斯石

(Na,Ca,K)(Mg,Mn)Mn6O14.5H2O

(Na,Ca,K)(Mg,Mn)MnO₁₄·5H₂O

This sample of birnessite is displayed in the Smithsonian Museum of Natural History. Birnessite is an oxide of manganese and magnesium along with sodium, calcium, and potassium with the composition (Na,Ca,K)(Mg,Mn)Mn6O14.5H2O . This sample is about 3x13 cm and is from Mont Saint-Hilaire, Quebec, Canada. The sample is described as birnessite after serandite.

这种birnessite样品陈列在史密森尼自然历史博物馆中。birnessite是一种含锰、镁、钠、钙和钾的氧化物，其化学式为(Na,Ca,K)(Mg,Mn)Mn6O14·5H2O。该样品尺寸约为3x13厘米，来自加拿大魁北克省的Mont Saint-Hilaire。该样品被描述为birnessite，因其与serandite有关。

Mindat: Birnessite

Mindat: 碳酸盐矿物
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