Surface Indications Of Quartz Adularia Epithermal Deposits
May 2015 by Alex DolbeareI am going to keep to the basics of surface indications and visual clues in the rocks and minerals themselves that help me find gold-bearing veins in this classification of deposits.
I’ve been fascinated by iron minerals for many years. So let’s take a look at this very interesting and colorful element.
The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.
The faulting, folding and shearing that occurred in the Mother Lode belt has created zones of structurally weak rocks or contacts between different types of rock, which has been favorable for the deposition of gold bearing ores.
Apart from the hard rock mines, there are abundant gold-bearing placers, especially in the areas in and around Oriental Wash.
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
The Bawl Mill • Ask The Experts • Ask The Experts • California's Mother Lode Quartz Veins • Key to Successful Prospecting: Confidence • What To Look For—And Look Out For—In A Placer Mineral Report • Additional Note on Bluff's Beach • Montana’s Rosetta Stone: Discovering Mines In The Treasure State • Perception of Mining vs. Reality • Partnering for Tax Savings • Over The Divide: Charles Lewis Garrett • Piggin' for Gold • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver