On the occurence of siliceous nodular brown haematite (ghite), in the carboniferous limestone beds near Cookstown, Co. Tyrone
Subtitle: and note on its formation by chemical alteration from ordinary clay-ironstone. With analysis
By: by Edward T. Hardman.
Publisher: s.n.
Published: 1873
Place of publication: [London
Language: eng
Subjects: Goethite -- Northern Ireland -- Cookstown.
Other titles: Geological magazine.