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Gold/Mining/Energy : Medinah Mining Inc. (MDHM) -- Ignore unavailable to you. Want to Upgrade?

To: Handshake™ who wrote (10332)	3/23/1999 8:22:00 AM
From: Mike Gold	Respond to of 25548

Vince, my 3 cats want a bigger house!. My shopping list has grown very long. Still waiting for the big one before I starting spending all my medinah booty. House, new truck, new computer, diamond will just have to wait a little longer!

To: Handshake™ who wrote (10332)	3/23/1999 11:40:00 AM
From: Mike Gold	Respond to of 25548

Vince, some more fun geology facts on breccia pipe deposits: 1)Breccias are reported from 50 to 60 percent of porphyry systems-more are certainly present but either no exposed or have not been recognized. 2)The breccias range from minor adjuncts to deposits to the economically dominant parts of some porphyry systems. 3)The breccia bodies range in horizontal dimensions from a few meters to a maximum of 2 X 0.7 Km for the composite pipe at Los Bronces. 4) Vertical dimensions commonly range from 500 to 1000 meters. 5) The form of pipelike breccias in porphyry systems is, in general, less regular than that of breccia pipes divorced from porphyry systems. 6)Individual porphyry-related breccias also seem to exhibit a greater variety of textures than isolated breccia pipes. 7)The degree of fragment displacement in porphyry-related breccias is varied but, in general, is greater than in intrusion-related breccia pipes. 8)Fragments in the pipe can move up 200 meters and descent upto 300 meters. 9)Most breccias are rooted in porphyry intrusions. 10)Breccias occupy a wide variety of positions within porphyry systems. Many of them are centrally placed whereas others are eccentrically located-if very high degree of alteration in the pipe-likely centrally placed-Lipangue's breccia is probably centrally placed. 11)Contacts between different lithologies, especially between intrusions and their wall racks, seem to have provided a more widespread locus for brecciation.(Lipangue formed at the contact between the andesites and the grandiorites-just as predicted for a breccia pipe related with a porphyry 12)Quartz is the most widespread cementing mineral. 13) Breccias in porphyry systems are commonly charactereized by higher contents of exploitable metals than the surrounding stockworks. 14)Metal grades are appreciably enhanced by the presence of previously mineralized clasts in the breccias. 15)In some breccias, the metal budget is distinctly different from that characteristic of the porphyry deposit as a whole. 16)Some breccias in porphyry systems have a preferred distribution of ore minerals. 17)Breccias pipes may form before, during, or after the porphyry deposit. 18)Breccias ini porphyry systems are related to the violent release of magmatic-hydrothermal fluids from cooling stocks. 19)A more protracted release of fluids, or several stages of release as a result of multiple intrusion, effectively explains the intermineral position of many breccias in porphyry systems.