|kal(ˌ)kōˈsidəˌrīt noun
( -s )
Etymology: German chalkosiderit from chalk- chalc- + sider- + -it -ite
: a mineral Cu(Fe, Al) 6 (PO 4 ) 4 (OH) 8 .4H 2 O consisting of a hydrous basic green phosphate of copper, iron, and aluminum, closely related to turquoise, and containing more aluminum than iron