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U.S. Geological Survey Open-File Report 92–0437

Industrial Mineral Deposit Models:
Grade and Tonnage Models

Edited by G.J. Orris and J.D. Bliss

This publication presents a series of 23 grade and tonnage and other deposit-specific models for industrial minerals. The models are presented in the format and classification system used in Cox and Singer (1986) and modified by Orris and Bliss (1991).

Originally published in 1992, this report is presented here in Portable Document Format.
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If you already have Acrobat Reader 9.0 or later installed on your computer, click here to view the text (4.5 MB).

For more information about this report, contact William D. Heran at

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