carnegieite

mineral

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Last updated

June 22, 2026

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Carnegieite is an artificial mineral composed of sodium aluminum silicate (NaAlSiO₄). It is a synthetic, high-temperature form of nepheline, which is a common feldspathoid mineral. Carnegieite was synthesized at the Carnegie Institution of Washington, D.C., and is related to feldspar.12

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nepheline
Carnegieite is synthetic, high-temperature nepheline. Kaliophilite is the high-temperature form of kalsilite, the potassium-rich variety of nepheline. Kaliophilite is unstable at normal temperatures and rarely occurs in nature.
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Carnegieite is synthetic, high-temperature nepheline. Kaliophilite is the high-temperature form of kalsilite, the potassium-rich variety of nepheline. Kaliophilite is unstable at normal temperatures and rarely occurs in nature.
Read More