Everything You Need to Know about VMS Deposits
People are often not aware of where their most prized devices really come from.
Phones, cars, and computers might not seem like the most natural objects. But the metals that make them come from natural processes deep in the earth’s crust – processes that have been going on for 3.4 billion years, and continue to this day.
Today’s visualization comes to us from Foran Mining Corp. and goes in depth to show how one type of mineral deposit, Volcanogenic Massive Sulphide or “VMS”, forms and is the primary source for many of the materials that make the modern world.
What is a VMS Deposit?
Volcanogenic Massive Sulphide (VMS) deposits are one of the richest sources of metals such as copper, lead, and zinc globally. VMS deposits can also produce economic amounts of gold and silver as byproducts of mining these deposits.
Currently, global metal production from VMS deposits account for 22% of zinc, 9.7% of lead, 6% of copper, 8.7% of silver and 2.2% of gold.
Where are VMS deposits found?
VMS deposits occur around the globe and often form in clusters or camps, following the tectonic plate boundaries in areas of ancient underwater volcanic activity.
Natural processes underway today are forming the VMS deposits of tomorrow. This gives scientists an incredible advantage in witnessing how VMS deposits form and gives a special advantage to geologists for what to look for.
Mineralization and Formation
The geological processes that form VMS deposits occur at the depths of the ocean and are associated with volcanic and/or sedimentary rocks.
At sections where the Earth’s crust is thin due to faulting or separation of tectonic plates, the magma heats up the ocean floor.
As the Earth’s crust heats up, the ground softens and allows heated magma to escape towards the ocean or crust contact, the early beginning of a volcano and the deposition of minerals into the ocean floor from magma. Also, the heated ground cracks and begins a process that draws in sea water into the crust which becomes super-heated and imbued with minerals. Black and white smokers expel this seawater back to the surface.
Black and white smokers exhale a mineral rich-plume that spreads out over the ocean floor. As it moves farther and farther away from its heat source, the plume precipitates minerals onto the ocean floor. Over time, the continual activity of the smokers and their mineral rich plumes create mineralized beds that become VMS deposits.
With the movement of the Earth’s tectonic plates, these mineral rich beds are transposed and can be found on land that was once underwater.
How Big Can VMS Deposits Get?
Current resource and historical production figures from 904 VMS deposits around the world average roughly 17 million tonnes (“Mt”), of which is approximately 1.7% copper, 3.1% zinc, and 0.7% lead.
A few giant mineral deposits (greater than 30 Mt) and several copper-rich and zinc-rich deposits of median tonnage (~2 Mt) skew the averages.
Several large VMS camps are known in Canada, including the Flin Flon, Bathurst and Noranda camps. The high-grade deposits within these camps are often in the range of five to 20 million tonnes of ore and can be much larger.
Meanwhile, approximately 90 VMS deposits have been discovered in the Iberian Pyrite Belt which runs through Portugal and Spain. Several of these are larger than 100 million tonnes, making this region one of the most significant hosts to VMS deposits in the world.
Prove Your Metal: Top 10 Strongest Metals on Earth
There are 91 elements that are defined as metals but not all are the same. Here is a breakdown of the top 10 strongest metals and their applications.
Prove Your Metal: Top 10 Strongest Metals on Earth
The use of metals and the advancement of human civilization have gone hand in hand — and throughout the ages, each metal has proved its worth based on its properties and applications.
Today’s visualization from Viking Steel Structures outlines the 10 strongest metals on Earth and their applications.
What are Metals?
Metals are solid materials that are typically hard, shiny, malleable, and ductile, with good electrical and thermal conductivity. But not all metal is equal, which makes their uses as varied as their individual properties and benefits.
The periodic table below presents a simple view of the relationship between metals, nonmetals, and metalloids, which you can easily identify by color.
While 91 of the 118 elements of the periodic table are considered to be metals, only a few of them stand out as the strongest.
What Makes a Metal Strong?
The strength of a metal depends on four properties:
- Tensile Strength: How well a metal resists being pulled apart
- Compressive Strength: How well a material resists being squashed together
- Yield Strength: How well a rod or beam of a particular metal resists bending and permanent damage
- Impact Strength: The ability to resist shattering upon impact with another object or surface
Here are the top 10 metals based on these properties.
The Top 10 Strongest Metals
|Rank||Type of Metal||Example Use||Atomic Weight||Melting Point|
|#1||Tungsten||Making bullets and missiles||183.84 u||3422°C / 6192 °F|
|#2||Steel||Construction of railroads, roads, other infrastructure and appliances||n/a||1371°C / 2500°F|
|#3||Chromium||Manufacturing stainless steel||51.96 u||1907°C / 3465°F,|
|#4||Titanium||In the aerospace Industry, as a lightweight material with strength||47.87 u||1668°C / 3032°F|
|#5||Iron||Used to make bridges, electricity, pylons, bicycle chains, cutting tools and rifle barrels||55.85 u||1536°C / 2800°F|
|#6||Vanadium||80% of vanadium is alloyed with iron to make steel shock and corrosion resistance||50.942 u||1910°C / 3470°F|
|#7||Lutetium||Used as catalysts in petroleum production.||174.96 u||1663 °C / 3025°F|
|#8||Zirconium||Used in nuclear power stations.||91.22 u||1850°C / 3.362°F|
|#9||Osmium||Added to platinum or indium to make them harder.||190.2 u||3000°C / 5,400°F|
|#10||Tantalum||Used as an alloy due to its high melting point and anti-corrosion.||180.94 u||3,017°C / 5462°F|
Out of the Forge and into Tech: Metals for the Future
While these metals help to forge the modern world, there is a new class of metals that are set to create a new future.
Rare Earth elements (REEs) are a group of metals do not rely on their strength, but instead their importance in applications in new technologies, including those used for green energy.
|Neodymium||Magnets containing neodymium are used in green technologies such as the manufacture of wind turbines and hybrid cars.|
|Lanthanum||Used in catalytic converters in cars, enabling them to run at high temperatures|
|Cerium||This element is used in camera and telescope lenses.|
|Praseodymium||Used to create strong metals for use in aircraft engines.|
|Gadolinium||Used in X-ray and MRI scanning systems, and also in television screens.|
|Yttrium, terbium, europium||Making televisions and computer screens and other devices that have visual displays.|
If the world is going to move towards a more sustainable and efficient future, metals—both tough and smart—are going to be critical. Each one will serve a particular purpose to build the infrastructure and technology for the next generation.
Our ability to deploy technology with the right materials will test the world’s mettle to meet the challenges of tomorrow—so choose wisely.
20 Common Metal Alloys and What They’re Made Of
You can’t find stainless steel, brass, sterling silver, or white gold on the periodic table. Learn about 20 common metal alloys, and what they are made from.
Every day, you’re likely to encounter metals that cannot be found anywhere on the periodic table.
You may play a brass instrument while wearing a white gold necklace – or maybe you cook with a cast iron skillet and store your leftovers in a stainless steel refrigerator.
It’s likely that you know these common metal alloys by name, and you can probably even imagine what they look and feel like. But do you know what base metals these alloys are made of, exactly?
Common Metal Alloys
Today’s infographic comes to us from Alan’s Factory Outlet, and it breaks down metal and non-metal components that go into popular metal alloys.
In total, 20 alloys are highlighted, and they range from household names (i.e. bronze, sterling silver) to lesser-known metals that are crucial for industrial purposes (i.e. solder, gunmetal, magnox).
Humans make metal alloys for various reasons.
Some alloys have long-standing historical significance. For example, electrum is a naturally-occurring alloy of gold and silver (with trace amounts of copper) that was used to make the very first metal coins in ancient history.
However, most of the common metal alloys on the above list are actually human inventions that are used to achieve practical purposes. Some were innovated by brilliant metallurgists, while others were discovered by fluke, but they’ve all had an ongoing impact on our species over time.
Alloys with an Impact
The Bronze Age (3,000 BC – 1,200 BC) is an important historical period that is rightfully named after one game-changing development: the ability to use bronze. This alloy, made from copper and tin, was extremely useful to our ancestors because it is much stronger and harder than its component metals.
Steel is another great example of an alloy that has changed the world. It is one of the most important and widely-used metals today. Without steel, modern civilization (skyscrapers, bridges, etc.) simply wouldn’t be possible.
While nobody knows exactly who invented steel, the alloy has a widely-known cousin that was likely invented in somewhat accidental circumstances.
In 1912, English metallurgist Harry Brearley had been tasked with finding a more erosion-resistant steel for a small arms manufacturer, trying many variations of alloys with none seeming to be suitable. However, in his scrap metal heap – where almost all of the metals he tried were rusting – there was one gun barrel that remained astonishingly untouched.
The metal alloy – now known to the world as stainless steel – was a step forward in creating a corrosion-resistant steel that is now used in many applications ranging from medical uses to heavy industry.
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