Distribution of niobium in heavy-mineral-concentrate samples from the Charlotte 1⁰
By: by W.R. Griffitts ... [et al.].
Contributors: Griffitts, Wallace R.; Geological Survey (U.S.)
Series: Open-file report -- 84-843-H.; Open-file report (Geological Survey (U.S.)) -- 84-843-H.
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1985
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Niobium ores -- North Carolina.; Niobium ores -- South Carolina.
Notes: Distributed to depository libraries in microfiche.

Bibliography: leaf 4.

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1985]. 2 microfiches ; 11 x 15 cm.