carnegieite Directory References Discover What State Is Washington, D.C. In? History of Technology Timeline 6 Cultures That Recognize More than Two Genders Why Is Alcohol Measured by Proof? 9 Animals That Look Like Leaves 6 Small Kingdoms of the World Timeline and Map of the Panama Canal 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