Mine detail: Cuarenta District

Previously called 'TuniscoEl SolFaroPorvenirVilla CinabrioEl TembleteFoco'

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Location

Lat / long:

26.13364, -105.5005

Resource(M)

Primary:	Mercury
Secondary:	Gold
Tertiary:	Copper
Discovery year:	1932

Production

Operation type:	Unknown
Deposit type:	FRACTURE FILLINGS, VEINLETS, DISSEMINATIONS
Production size:	Small
Development status:	Past Producer
Last production ended:	1943

Geology

Structure:	THREE SETS OF POST-RHYLOITE NORMAL (?) FAULTS. THE YOUNGEST STRIKES N, DIPS VERTICALLY AND THEY HAVE OFFSETS OF 1 * OF METERS. OLDER FAULTS RUN NE AND E. ALL ORE NEAR FAULTS.
Alteration processes:	PATCHY SILICIFICATION PREDATING FAULTING, RELATED TO RHYOLITE ERUPTIVES. ONLY OCCASIONALLY CONTROLS ORE.

References

MRDS	MX09002
DEP	60001188
Reference	{Deposit:: GALLAGHER, DAVID, AND PEREZ S., R., 1946, GEOLOGY OF THE CUARENTA MERCURY DISTRICT, STATE OF DURANGO, MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 946-F, P. 115-168.}{Deposit:: PEREZ SILICEO, R. AND GALLAGHER, D., 1947, LA GEOLOGIA DE LA REGION MERCURIAL DE EL CUARENTA, MUNICIPIO DE SAN BERNARDO, ESTADO DE DURANGO: CONSEJO DE RECURSOS NATURALES NO RENOVALLES, BOL. 13, 21 PP.}