apjohnite

apjohnite
\\ˈapˌjäˌnīt\ noun (-s)
Etymology: German apjohnit, from James Apjohn died 1886 Irish chemist who first examined it + German -it -ite
: a mineral MnSO4.Al2(SO4)3.22H2O consisting of manganese aluminum sulfate containing water and occurring in crusts or fibrous masses

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apjohnite Min.
(ˈæpdʒɒnaɪt)
[named in 1847, from its first analyzer Apjohn (Phil. Mag. XII. 103; 1838).]
Manganese alum; a double sulphate of potash and manganese, occurring as a mineral in fibrous or asbestiform masses, white, and with a silky lustre.

Useful english dictionary. 2012.

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