Mine detail: Pratt Mine

Previously called 'Black Boy #5'

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Location

Lat / long:

39.56912, -113.03414

Resource(B)

Primary:	Manganese
Tertiary:	Arsenic, Gold, Silver, Sulfur, Zinc
Ore:	Pyrolusite
Gangue:	Barite, Muscovite, Pyrite, Sericite, Sphalerite
Orebody form:	LENTICULAR
Discovery year:	1924

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1924

Geology

Host rock:	Dolomite, Ls, Shale (Dugway Ridge Dolomit);Prospect Mountain Quartzite
Host type:	Dolomite
Associated rock:	Volcanic Flows And Dikes
Associated type:	Latite
Structure:	The Drum Mtns Form A Homocline That Dips Sw Under A Cover Of Volcanic Rocks. Regional Strike N 35 W At 25 Sw, A N 75 Deg E Trending Fault Which Displaces Quartzite-Dolomite Contact About 1500 Feet
Tectonic:	Sevier Orogenic Belt
Alteration processes:	Oxidation To Depths Of 300 Ft.

References

MRDS	DC13232
DEP	10020439
Reference	{Analytical Data:: SRC.REF: SEE GENERAL REF. #1}{Deposit:: CALLAGHAN, EUGENE, 1938, MANGANESE DEPOSITS OF THE DRUM MOUNTAINS, UTAH: ECON. GEOL. V. 33, NO. 5, P-508-521.}{Deposit:: CRITTENDEN, M.D., 1961, MANGANESE DEPOSITS IN THE DRUM MOUNTAINS JUAB AND MILLARD COUNTIES, UTAH: USGS BULL. 1082-H.}{Deposit:: KING, W.H., 1947, DRUM MTN MANGANESE PROJECT: USBM RI 3993}{Deposit:: CRITTENDEN, M.D., MANGANESE DEPOSITS OF UTAH: USGS BULL. 979-A, P. 28-30.}{Deposit:: 1938 RECON CALLAGHAN, EUGENE: ECON. GEOL. V. 33}{Deposit:: 1940 DIREXPL USBM - DIAMOND DRILLING}{Deposit:: 1945 DIREXPL USBM - DIAMOND DRILLING}{Deposit:: 1961 RECON CRITTENDEN, M.D: USGS BULL. 1082-H}{Production:: CRITTENDEN, M. D., 1961, MANGANESE DEPOSIT IN THE DRUM MTN: USGS BULL 1082-H}
Reporter	Unknown, Everts, Mike L.