Oroblanco
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<From Hamilton's Mexican handbook: a complete description of the republic of Mexico
By Leonidas Le Cenci Hamilton 1884>
http://books.google.com/books?id=UB...opa+mine+mexico&as_brr=1#v=onepage&q=&f=false
Opinions? Thank you in advance,

I would add this from the same source, QUOTE
END QUOTEThe veins have been opened in many parts by the Spaniards who content themselves almost invariably with sinking shafts for the extraction of the superior decomposed ores abandoning the mine on reaching sulphurets from ignorance of the process for the extraction of silver.
This is a fact with many old Spanish mines - they had no way of handling sulphide ores (sulphurets) so would simply abandon the mine when the easily processed decomposed ores were exhausted, leaving behind (in some cases) much larger ore bodies than what they mined out, possibly even richer ores. We do have ways to handle sulphide ores today. Interesting wouldn't you say, amigos?

Oroblanco

