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。
Celestite
天青石
Also called Celestine
也称Celestine
SrSO4
SrSO₄
These samples of celestite are on display at the Smithsonian Museum of Natural History. Celestite is sulfate of strontium, SrSO4. The size of the sample is about 10-12 cm high and it is from Madagascar. The gem is 16.8 carats and is shown at the same scale.