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Australian Continent Is Very Stable And Has Been In Shallow Sea Environment For a Long Time In The Early Stage Of The Earth Evolution, Forming Abundant Banded Magnetite. After a Long Period Of Geological Enrichment, Banded Magnetite Formed a Series Of Super Large Rich Iron Ores. Due To Geological Stability And No Large-Scale Orogeny, These Rich Iron Ores Are Still Well Preserved After Billions Of Years. It Has High Purity And Can Be Smelted Directly.
Now, Iron Accounts For About 95% Of The Annual Consumption Of Metals In The World. It Can Be Said That Iron Is The "Skeleton" Supporting Modern Society. Without Iron, There Would Be No Modern Civilization.

Where Does Iron Come From? Iron Ores Can Be Divided Into Two Categories: One Is Sedimentary Deposits Formed On The Earth's Surface, From Which Most Of The World's Iron Reserves Come; The Other Is Endogenetic Deposits Formed By Magma And Hydrothermal Solution In The Earth. Large And Superlarge Iron Ores Are Often Associated With Banded Magnetite. Banded Magnetite, Also Known As Ferrosilicon Formation, Most Of Them Were Formed 2 Billion Years Ago, With a Very Large Scale. A Single Deposit Can Be Hundreds Of Meters Thick, Thousands Of Meters Wide And Hundreds Of Thousands Of Meters Long. This Kind Of Iron Ore Is Composed Of Banded Quartz And Magnetite. The Iron Content Is Usually More Than 15%, But It Is Not Rich Iron Ore, That Is To Say, It Cannot Be Directly Smelted Without Separation. After Weathering, Metasomatism With Water And Metamorphism, Banded Magnetite Can Be Further Enriched To Form Rich Iron Ore Which Can Be Directly Smelted. This Is Basically How The Rich Iron Ore In Australia Comes From. The Reason Why Australia's Iron Ore Is Particularly Good Can Be Summed Up In Four Words: Ancient And Stable.

2.3 Billion Years Ago, The Oxygen Content In The Earth's Atmosphere Was Far Lower Than That Of Today, And The Sulfur Content In Seawater Was Also Very Low. Therefore, a Large Amount Of Iron Existed In Seawater In The Form Of Divalent Iron Ions. By About 2.3 Billion Years Ago, The Oxygen Content In The Earth's Atmosphere Has Increased To About Half Of The Current Content. At This Time, The Divalent Iron Ion Is No Longer Stable, But Deposited Together With Silica And Carbonate To Form Banded Magnetite. Moreover, With The Weathering Process Of The Surface, a Large Amount Of Iron Is Transported To The Ocean, So The Iron Content Of Offshore And Lakes Is Often Higher Than That Of Pelagic, Which Is More Conducive To Mineralization.
Australia Is An Ancient Continent. The Oldest Mineral Found So Far In The World Is From Mount Jack In Western Australia. At The Same Time, The Australian Continent Is Very Stable. In The Early Stage Of The Earth Evolution, It Was In The Shallow Sea Environment For a Long Time And Received The Deposition From The Continent, Forming Rich Banded Magnetite. After a Long Period Of Geological Enrichment, Banded Magnetite Formed a Series Of Super Large Rich Iron Ores. Due To Geological Stability And No Large-Scale Orogeny, These Rich Iron Ores Are Still Well Preserved After Billions Of Years. The Famous Panawanica In Australia Is a Giant Rich Iron Ore Formed By Weathering Of Banded Magnetite. The Whole Deposit Is Distributed Along The Ancient River Course And Exposed To The Surface, So It Is Easy To Be Mined. Iron Ore Is Very Pure And Can Be Smelted Directly.
When It Comes To Iron Ore In Australia, There Is Another Interesting Story. Australia Is The World's Largest Exporter Of Iron Ore, And Its Total Reserves Are Estimated To Be About 100 Billion Tons. But Until The 1950s, Australians Thought They Had Little Iron Ore Resources, So They Banned The Export Of Iron Ore. In 1952, An Australian Farmer Hancock And His Wife Took a Private Plane To Perth, The Capital Of Western Australia. On The Way, He Ran Into a Huge Canyon Due To a Rainstorm. Unexpectedly, He Found That The Cliffs On Both Sides Of The Canyon Were Like Rust. As a Result, He Found The World's Largest Iron Ore Deposit So Far, Which Changed The Pattern Of Iron Ore In Australia And Even The World At One Stroke.

Australia Has Such Unique Geological Conditions. Apart From Iron Ore, It Is Also Rich In Uranium Resources. The Uranium Reserves Of Olympic Dam Alone Account For About 40% Of The Total Proved Reserves In The World. In Addition, There Are Many Bauxite Deposits In Australia, Which Also Belong To Sedimentary Deposits. In The Plain, a Few Meters Thick Overburden Is High-Quality Bauxite. Australia's Diamond Reserves Are Also Among The Best In The World.