This publication is a continuation of descriptive mineral deposit models
and grade and tonnage models first published in "Mineral Deposit Models,"
USGS Bulletin 1693, edited by Dennis P. Cox and Donald A. Singer (1986).
That bulletin is a collection of 85 descriptive and 60 grade-tonnage models.
This bulletin describes six new mineral deposit models and nine new or
revised grade and tonnage models and includes a numerical method of
matching mineral deposits to existing deposit models.
Originally published in 1992, this report is presented here in
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