carnegieite Directory References Discover 10 Failed Doomsday Predictions 7 Unique Burial Rituals Across the World Why Is the Mona Lisa So Famous? How Deadly Is Quicksand? 10 Best Hockey Players of All Time How Many Countries Are There in the World? Will Light-Speed Space Travel Ever Be Possible? Contents carnegieite mineral Ask the Chatbot a Question 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