Mine detail: Juan Mine

Previously called 'Demasias Juan'

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Location

Lat / long:

-16.67547, -67.68283

Resource(M)

Primary:	Tin, Tungsten
Ore:	Cassiterite, Wolframite
Gangue:	Clay, Fluorite, Marmatite, Pyrite, Pyrrhotite, Quartz, Tourmaline
Discovery year:	1850

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer

Geology

Host type:	Slate,Quartzite
Structure:	On N45w Cerro Negro Anticline (Flanks Dip 25-70) Displaced By N45e Vertical Fault., N45e Vertical Fault Displaces Anticlinal Axis And Veins.
Alteration processes:	Alteration Halo 7 To 30 M Wide Of Strong Silicification And Disseminated Tourmaline.

References

MRDS	BL20281
DEP	10006293
Reference	{Deposit:: GUSTAVSON ASSOC., 1992, COMPENDIUM OF THE ECONOMIC GEOLOGY OF BOLIVI}{Other Database:: CIMRI}
Reporter	Long, Keith R.