Stromeyerite is a rare mineral that belongs to the sulfide class of minerals. It is a silver-gray, metallic mineral that is named after the German chemist, Friedrich Stromeyer. This mineral has several synonyms including argentopyrite, grey copper ore, and malleable silver. Argentopyrite is a term that is often used interchangeably with Stromeyerite because it shares the same chemical composition and crystal structure. Grey copper ore is a synonym used due to its color and copper content. Malleable silver is another synonym used due to its metallic appearance and ductility. Overall, these synonyms help users to easily recognize the mineral and understand its properties.