Bull 1728 White Rock Range Beaver Iron Ctys Ut

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Mineral Resources of the White Rock Range Wilderness Study Area, Lincoln County, Nevada, and Beaver and Iron Counties, Utah US OfI'A.INIlH' Of 'HI Wlfti011

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U.S. GEOLOGICAL SURVEY BULLETIN 1728-B

NEVADA

UTAH

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DEFINITION OF LEVELS OF MINERAL RESOURCE POTENTIAL AND CERTAINTY OF ASSESSMENT Definitions of Mineral Resource Potential LOW mineral resource potential is assigned to areas where geologic, geochemical. and geophysical characteristics define a geologic environmem in which the existence of resources is unlikely . This broad category embraces areas with dispersed but insignificandy mineralized rock as well as areas with few or no indications of having been mineralized MODERATE mineral resource potential is assigned 10 areas where geologic. geochemical. and geophysical characteristics indicate a geologic environment favorable for resource occurrence, where inte'llretations of data indicale a reasonable likelihood of resource accumulation. and (or) where an application of mineral-deposit models indicates favorable ground for the specified type(s) of deposits. HIGH mineral resource potentiaJ is assigned to are3.lo where geologic. geochemIcal. and geophysical characteri~tics indicate a geologic environment favorable for resource occurrence. where interpretations of data indicate a high degree of likelihood for resource accumulation , where data support mineral-deposit models indicating presence of resources. and where evidence indicates thaI mineral concentration has taken place. Assignment of high resource potential to an area requires some positive knowledge thai mineral-forming processes have been active in at least part of the area UNKNOWN mincr.t1 rc:source potential is as~igned to areas where information i:-. inadequate to a:.::.ign low. moderate. or high k:vels of resource JXItential NO mineral resource potential is a caregory reserved for a specific rype of resource in a well-defined area

levels of Certainty U/A

t

HIGH POTENTIAL

-'

< ;:: Z

w

f-

o

"'-

HID

H/C

H/B

HIGH POTENTIAL

HIGH POTENTIAL

M/B

M/C

MID

MODERATE POTENTIAL

MODERATE POTENTIAL

MODERATE POTENTIAL

LIB

L/C

UNKNOWN

w

U

POTENTIAL

c::

LID

:J

o

lOW POTENTIAL

'"w c:: u.

o

LOW

lOW

POTENTIAL

POTENTiAL

NID

-' w

>

NO POTENTIAL

w -'

A

B LEVEL

A. B. C

D.

Available Available Available Available

D

C

OF

CERTAINTY

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mformation is 1l()( adequate for determination of the level of mineraJ resource potential information suggests the level of mineraJ resource potential information gives a good indication of the level of mineral resource potential information clearly defines the level of mineral resource potential .

Abstracted with minor modifications from: Taylor, R. v . 78. Taylor. R . of the

B .. and Steven . T A. , 1983, Definition of mineral re~urce potential: Economic Geology, no. 6. p. 1268- 1270. B .. Stoneman. R. J .• and Marsh, S P .• 1984. An 3.!.sessmcm of the mineral resoun:e potemial San Isabel National Forest. south-central Colorado: U.S. Geological Survey Bulletin 1638, p.

4()..42.

Goudani. G. H. , compiler, 1984. Guide (0 prcpar.UJon of mineral :-.urvey rcpom. on publil.: lands: U.S Geological Survey Open- File Report 84-0787, p. 7. 8