carnegieite Directory References Discover Cruel and Unusual Punishments: 15 Types of Torture 10 Great Sports Rivalries 6 Lost Civilizations 9 of the World’s Deadliest Snakes 7 Vestigial Features of the Human Body 7 Wonders of America What Did Cleopatra Look Like? Contents carnegieite mineral Ask the Chatbot a Question Learn about this topic in these articles:form of nepheline In nephelineCarnegieite 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