rammelsbergite
/ˈram(ə)lzbəːɡʌɪt/Mineralogy
noun
A rare nickeliferous mineral occurring as white or silvery-grey granular or fibrous masses.
- Rammelsbergite is an arsenide of nickel, NiAs2. Crystal system: orthorhombic..
Origin
Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Rammelsbergit from the name of K. F. Rammelsberg, German mineralogist + -it.