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。

Thortveitite

托尔维埃石

(Sc,Y)2Si2O7

(Sc,Y)₂Si₂O₇

This sample of thortveitite is displayed in the Smithsonian Museum of Natural History. Thortveitite is a silicate mineral of yttrium and scandium. It has the composition (Sc,Y)2Si2O7. This sample is about 5x18 cm and is from Madagascar. Named after Olaus Thortveit (1872-1917), feldspar and mineral exporter from Iveland, Norway.

这种托尔特维特石样品陈列在史密森尼自然历史博物馆中。托尔特维特石是一种含钇和钪的硅酸盐矿物，其化学式为(Sc,Y)₂Si₂O₇。该样品尺寸约为5×18厘米，来自马达加斯加。该矿物以挪威伊韦兰的长石和矿物出口商奥拉夫·托尔特维特（1872-1917）命名。

Mindat: Thortveitite

Mindat: Thortveitite（专名或术语）
Minerals
矿物
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