Mine detail: La Piedra Azul

Previously called ''

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Location

Lat / long:

30.73626, -112.58378

Resource(M)

Primary:	Antimony
Gangue:	Chalcedony, Quartz
Discovery year:	1936

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1942

Geology

Host type:	Siltstone,Sandstone
Structure:	Veins Are Cross-Cut Or Terminated By Premineral Faults, Locally Containing Vein Material, That Strike N 25-35 E And Dip 5-55 E. Veins Also Cut By Postmineral Faults That Strike N 30 E But Generally Steeper In Dip Than Parallel Premineral Faults. Postmineral Movement Has Occurred Locally Along Premineral Faults.
Alteration processes:	Siltstone And Sandstone Leached To White Kaolinite And Sand In Zone Extending 60-70 Cm From Vein Walls.

References

MRDS	MX00450
DEP	10049197
Reference	{Deposit:: WHITE, D.E. AND GUIZA, REINALDO, 1949, ANTIMONY DEPOSITS OF EL ANTIMONIO DISTRICT, SONORA, MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 962-B, P.104-105, PLATES 15, 20}{Production:: WHITE AND GUIZA, 1949.}
Reporter	Leonard, Kenneth R. (Page, Norman J.)