Greg Ashcroft
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Important Mining Districts
The California Gold Rush : 1840 – 1857
“Gold! Gold! Gold from the American River!” “Gold! Gold! Gold from the American River!” Those words uttered from Samuel Brannan upon…
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Deposit Types
Nickel Laterites: The World’s Largest Source of Nickel
Nickel is found in two types of deposits; Nickel laterites and magmatic sulfide deposits. Although nickel Laterites make up 70% of…
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Commodities
Nickel: Commodity Overview
Man’s first and mostly unintentional use of nickel began with making pottery and tools as early as 3500BC, but it’s intentional…
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Deposit Types
Porphyry Deposits: The World’s Largest Source of Copper
The term “porphyry” comes from the word “porphyritic”, a textural term used by geologists to describe the mineral pattern within…
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Commodities
Phosphates: Commodity Overview
Phosphate is a basic ingredient for some proteins and is important in the development of bones and teeth in animals. It…
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