Mine detail: Piedra Niegro Claim

Previously called ''

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Location

Lat / long:

37.81668, -107.33535

Resource(M)

Primary:	Manganese
Ore:	Psilomelane

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host type:	Quartz Latite
Associated rock:	Fish Canyon Tuff;Early Intermediate-Composition Lavas And Related Rocks--Lava Flows
Associated type:	Rhyodacite,Quartz Latite,Andesite
Structure:	San Juan Volcanic Field, Lost Lake Caldera
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D011584
DEP	10014697
Reference	{Deposit:: LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.}{Deposit:: MUILENBURG, G.A., 1919, MANGANESE DEPOSITS OF COLORADO: CGS BULL. 15, P. 42-45.}{Deposit:: USBM MILS LISTING 0080530075}{Deposit:: STEVEN, T.A., AND LIPMAN, P.W., 1976, CALDERAS OF THE SAN JUAN VOLCANIC FIELD, SOUTHWESTERN COLORADO: USGS PROF. PAPER 958, P. 8-10.}
Reporter	Schwochow, Stephen D.