History & Geology
How To Identify Minerals
August 2021 by Chris Ralph
There are a number of characteristics that are used when one identifies a mineral. Each characteristic gives an indication as to what the mineral might be, and the combination of them will point to what it is.
Calcite and Limestone
The other distinguishing feature of calcite has to do with its chemistry. Geologists sometimes take a small bottle of dilute hydrochloric acid out into the field with them because calcite reacts with acids to make a bubbly foam.
The Goldfield Mining District, Nevada—Part I
An example of some of this extraordinary ore was a lot of about four tons from the Florence mine during the last days of a lease that averaged over 300 ounces of gold per ton.
The Bawl Mill
• Do as I say, not as I do...
• By the numbers...
Why Did This Silver Mine Close? - Pt III
Narrowing down a closure date will allow you to check the commodity price during that time and possibly confirm that a low price, rather than a lack of ore, was the driving force that closed the operation.
Eolian Gold Deposits
Prospectors who specialize in electronic detecting for nuggets in desert areas are especially interested in this type of deposit, as it yields nuggets that are close to the surface of the ground...
Prospecting for Nickel Deposits
The periodic exploration efforts for nickel during periods of high prices have been sporadic and incomplete. There is a role for the prospector and geologist in searching laterites potentially rich in nickel and mafic igneous bodies that may be rich in nickel.
The Coolgardie Gold Mining Camp of Southern California
The area was mined intermittently from around 1900 to 1915, but was also mined in the late 1800s, with a total output valued at about $100,000, which is around $9.5 million at the current gold price.
Subscription Required:
The Bawl Mill
• Ask The Experts - Are pulse induction detectors the right tech for gold?
• Ask The Experts - Why can’t I find gold with my detector?
• Ask The Experts - Are two rock crushing machines (jaw crusher and chain crusher) necessary?
• Ask The Experts - Why am I finding only coarse gold, not fines in this area?
• Ask The Experts - Is the amount of gold reserves claimed by mining companies real or just hype?
• Chasing Hard Rock Gold As A Placer Deposit
• Gold Prospecting for Better or Worse: Bumbling Through A Gold Bonanza
• How Mesothermal/Orogenic Gold Deposits Form
• My Explosive Introduction to Gold Mining
• Georgetown CA: A Historically Rich Mother Lode Treasure
• Reminder: Annual Claim Filings and Fees Due
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
