Misc
Visualizing the Abundance of Elements in the Earth’s Crust
Visualizing the Abundance of Elements in the Earth’s Crust
Elements in the Earth’s crust provide all the basic building blocks for mankind.
But even though the crust is the source of everything we find, mine, refine, and build, it really is just scratching the surface of our planet.
After all, the innermost layer of the Earth, the core, represents 15% of the planet’s volume, whereas the mantle occupies 84%. Representing the remaining 1% is the crust, a thin layer that ranges in depth from approximately 5-70 km (~3-44 miles).
This infographic takes a look at what elements make up this 1%, based on data from WorldAtlas.
Earth’s Crust Elements
The crust is a rigid surface containing both the oceans and landmasses. Most elements are found in only trace amounts within the Earth’s crust, but several are abundant.
The Earth’s crust comprises about 95% igneous and metamorphic rocks, 4% shale, 0.75% sandstone, and 0.25% limestone.
Oxygen, silicon, aluminum, and iron account for 88.1% of the mass of the Earth’s crust, while another 90 elements make up the remaining 11.9%.
| Rank | Element | % of Earth's Crust |
|---|---|---|
| 1 | Oxygen (O) | 46.1% |
| 2 | Silicon (Si) | 28.2% |
| 3 | Aluminum (Al) | 8.2% |
| 4 | Iron (Fe) | 5.6% |
| 5 | Calcium (Ca) | 4.1% |
| 6 | Sodium (Na) | 2.3% |
| 7 | Magnesium (Mg) | 2.3% |
| 8 | Potassium (K) | 2.0% |
| 9 | Titanium (Ti) | 0.5% |
| 10 | Hydrogen (H) | 0.1% |
| Other elements | 0.5% | |
| Total | 100.0% |
While gold, silver, copper and other base and precious metals are among the most sought after elements, together they make up less than 0.03% of the Earth’s crust by mass.
#1: Oxygen
Oxygen is by far the most abundant element in the Earth’s crust, making up 46% of mass—coming up just short of half of the total.
Oxygen is a highly reactive element that combines with other elements, forming oxides. Some examples of common oxides are minerals such as granite and quartz (oxides of silicon), rust (oxides of iron), and limestone (oxide of calcium and carbon).
#2: Silicon
More than 90% of the Earth’s crust is composed of silicate minerals, making silicon the second most abundant element in the Earth’s crust.
Silicon links up with oxygen to form the most common minerals on Earth. For example, in most places, sand primarily consists of silica (silicon dioxide) usually in the form of quartz. Silicon is an essential semiconductor, used in manufacturing electronics and computer chips.
#3: Aluminum
Aluminum is the third most common element in the Earth’s crust.
Because of its strong affinity for oxygen, aluminum is rarely found in its elemental state. Aluminum oxide (Al2O3), aluminum hydroxide (Al(OH)3) and potassium aluminum sulphate (KAl(SO4)2) are common aluminum compounds.
Aluminum and aluminum alloys have a variety of uses, from kitchen foil to rocket manufacturing.
#4: Iron
The fourth most common element in the Earth’s crust is iron, accounting for over 5% of the mass of the Earth’s crust.
Iron is obtained chiefly from the minerals hematite and magnetite. Of all the metals we mine, over 90% is iron, mainly to make steel, an alloy of carbon and iron. Iron is also an essential nutrient in the human body.
#5: Calcium
Calcium makes up about 4.2% of the planet’s crust by weight.
In its pure elemental state, calcium is a soft, silvery-white alkaline earth metal. It is never found in its isolated state in nature but exists instead in compounds. Calcium compounds can be found in a variety of minerals, including limestone (calcium carbonate), gypsum (calcium sulphate) and fluorite (calcium fluoride).
Calcium compounds are widely used in the food and pharmaceutical industries for supplementation. They are also used as bleaches in the paper industry, as components in cement and electrical insulators, and in manufacturing soaps.
Digging the Earth’s Crust
Despite Jules Verne’s novel, no one has ever journeyed to the center of Earth.
In fact, the deepest hole ever dug by humanity reaches approximately 12 km (7.5 miles) below the Earth’s surface, about one-third of the way to the Earth’s mantle. This incredible depth took about 20 years to reach.
Although mankind is constantly making new discoveries and reaching for the stars, there is still a lot to explore about the Earth we stand on.
Misc
Why Copper Is Critical for Data Centers
Copper consumption for data centers in North America is estimated to jump from 197,000 tonnes in 2020 to 238,000 tonnes in 2030.
Why Copper Is Critical for Data Centers
Data centers are computer server hubs that collect, store, and process large amounts of data, requiring extensive network infrastructure and electric power supply.
As the North American data center market grows, copper will be a key building block in this infrastructure.
This infographic from the Copper Development Association illustrates the critical role of copper in data center development.
Copper in Technology
Much has been said about the growing demand for critical minerals like copper, nickel, and lithium for clean technologies such as batteries, EVs, solar, and wind power.
Copper, however, has a more extensive role in technology as it is used in wires that connect power grids and data centers around the planet.
As one of the best conductors of electricity, copper maximizes efficiency in the transmission and distribution of electricity. Its thermal conductivity also helps build efficient heat exchangers, which are vital for cooling in data centers.
The inherent ductility and malleability of copper make it ideal for shaping into compact system components, like electrical connectors. In addition, copper can be fully recycled without losing any beneficial properties, providing an excellent solution in a growing green economy.
Data centers use copper across various electrical applications, including:
- Power cables
- Busbars
- Electrical connectors
- Heat exchangers and sinks
- Power distribution strips
To put the demand into perspective, Microsoft’s $500 million data center in Chicago required 2,177 tonnes of copper for construction.
North America’s Growing Need for Copper
With the rise of cloud computing and the Internet of Things (IoT), the North American data center market is expanding.
North American data center infrastructure is expected to grow from a $33 billion business in 2020 to $70 billion in 2030 and $185 billion in 2040.
This, in turn, will amplify the demand for copper. Copper consumption for data centers is estimated to jump from 197,000 tonnes in 2020 to 238,000 tonnes in 2030 and 293,000 tonnes in 2040.
The Copper Development Association (CDA) brings the value of copper and its alloys to society to address the challenges of today and tomorrow. Visit www.copper.org to learn more about copper’s critical role in data centers.
Misc
From Lead to Copper: Replacing America’s Aging Water Infrastructure
Investing in the transition from lead to copper is crucial for providing safe water to millions of Americans.
From Lead to Copper: Replacing America’s Aging Water Infrastructure
Water service lines, crucial for connecting buildings to the public water supply, are often outdated and built from lead, presenting significant health risks to Americans.
As the government invests billions toward replacing lead service lines, copper pipelines offer a safe, reliable, resilient, and sustainable alternative.
This infographic from the Copper Development Association illustrates how investing in the transition from lead to copper is crucial for providing safe water to millions of Americans.
The Problem with Lead Service Lines
In the 20th century, lead was commonly used for water service lines and plumbing pipes.
However, lead pipes can degrade over time, leading to the release of lead particles into drinking water. Even at low-to-moderate levels, lead exposure can have severe negative health impacts, including:
- Hearing loss
- Anemia
- Kidney impairment
- Immune system dysfunction
Today, every state in America has lead service lines (LSLs) that the federal government is actively working to replace.
Besides LSLs, an additional 2.8 million galvanized water pipes also need replacing.
Delivering Safe Water
Copper tubing has become the primary material to replace old water service lines.
The red metal is an antimicrobial material that kills pathogens, and it is also highly corrosion-resistant, with a typical service life of over 50 years.
In addition, copper service lines are impermeable and prevent outside chemicals from leaking into water. Copper tubes can be fully recycled at the end of their useful lives without losing any beneficial properties.
Replacing Lead Service Lines with Copper
If America were to replace all 12 million of its lead and galvanized service lines, it would require more than 650 million feet of copper tubing, equivalent to 180,000 tonnes of metal. To compare, the U.S. produced 22 million tonnes of copper in 2022.
The U.S. has commissioned several large-scale copper recycling projects in recent years, creating opportunities to meet the demand with recycled and mined supply.
However, upgrading the nation’s water infrastructure will require over $56 billion, way more than the $15 billion currently provided by the Bipartisan Infrastructure Law.
Visit Copper Development Association to learn more about how copper is crucial for providing safe water to millions of Americans.
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