Mining
Visualizing the Critical Metals in a Smartphone
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Visualizing the Critical Metals in a Smartphone
In an increasingly connected world, smartphones have become an inseparable part of our lives.
Over 60% of the world’s population owns a mobile phone and smartphone adoption continues to rise in developing countries around the world.
While each brand has its own mix of components, whether it’s a Samsung or an iPhone, most smartphones can carry roughly 80% of the stable elements on the periodic table.
But some of the vital metals to build these devices are considered at risk due to geological scarcity, geopolitical issues, and other factors.
Smartphone Part | Critical Metal |
---|---|
Touch Screen | indium |
Display | lanthanum; gadolinium; praseodymium; europium; terbium; dysprosium |
Electronics | nickel, gallium, tantalum |
Casing | nickel, magnesium |
Battery | lithium, nickel, cobalt |
Microphone, speakers, vibration unit | nickel, praseodymium, neodymium, gadolinium, terbium, dysprosium |
What’s in Your Pocket?
This infographic based on data from the University of Birmingham details all the critical metals that you carry in your pocket with your smartphone.
1. Touch Screen
Screens are made up of multiple layers of glass and plastic, coated with a conductor material called indium which is highly conductive and transparent.
Indium responds when contacted by another electrical conductor, like our fingers.
When we touch the screen, an electric circuit is completed where the finger makes contact with the screen, changing the electrical charge at this location. The device registers this electrical charge as a “touch event”, then prompting a response.
2. Display
Smartphones screens display images on a liquid crystal display (LCD). Just like in most TVs and computer monitors, a phone LCD uses an electrical current to adjust the color of each pixel.
Several rare earth elements are used to produce the colors on screen.
3. Electronics
Smartphones employ multiple antenna systems, such as Bluetooth, GPS, and WiFi.
The distance between these antenna systems is usually small making it extremely difficult to achieve flawless performance. Capacitors made of the rare, hard, blue-gray metal tantalum are used for filtering and frequency tuning.
Nickel is also used in capacitors and in mobile phone electrical connections. Another silvery metal, gallium, is used in semiconductors.
4. Microphone, Speakers, Vibration Unit
Nickel is used in the microphone diaphragm (that vibrates in response to sound waves).
Alloys containing rare earths neodymium, praseodymium and gadolinium are used in the magnets contained in the speaker and microphone. Neodymium, terbium and dysprosium are also used in the vibration unit.
5. Casing
There are many materials used to make phone cases, such as plastic, aluminum, carbon fiber, and even gold. Commonly, the cases have nickel to reduce electromagnetic interference (EMI) and magnesium alloys for EMI shielding.
6. Battery
Unless you bought your smartphone a decade ago, your device most likely carries a lithium-ion battery, which is charged and discharged by lithium ions moving between the negative (anode) and positive (cathode) electrodes.
What’s Next?
Smartphones will naturally evolve as consumers look for ever-more useful features. Foldable phones, 5G technology with higher download speeds, and extra cameras are just a few of the changes expected.
As technology continues to improve, so will the demand for the metals necessary for the next generation of smartphones.
This post was originally featured on Elements
Uranium
Charted: Global Uranium Reserves, by Country
We visualize the distribution of the world’s uranium reserves by country, with 3 countries accounting for more than half of total reserves.
Charted: Global Uranium Reserves, by Country
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
There can be a tendency to believe that uranium deposits are scarce from the critical role it plays in generating nuclear energy, along with all the costs and consequences related to the field.
But uranium is actually fairly plentiful: it’s more abundant than gold and silver, for example, and about as present as tin in the Earth’s crust.
We visualize the distribution of the world’s uranium resources by country, as of 2021. Figures come from the World Nuclear Association, last updated on August 2023.
Ranked: Uranium Reserves By Country (2021)
Australia, Kazakhstan, and Canada have the largest shares of available uranium resources—accounting for more than 50% of total global reserves.
But within these three, Australia is the clear standout, with more than 1.7 million tonnes of uranium discovered (28% of the world’s reserves) currently. Its Olympic Dam mine, located about 600 kilometers north of Adelaide, is the the largest single deposit of uranium in the world—and also, interestingly, the fourth largest copper deposit.
Despite this, Australia is only the fourth biggest uranium producer currently, and ranks fifth for all-time uranium production.
Country | Share of Global Reserves | Uranium Reserves (Tonnes) |
---|---|---|
🇦🇺 Australia | 28% | 1.7M |
🇰🇿 Kazakhstan | 13% | 815K |
🇨🇦 Canada | 10% | 589K |
🇷🇺 Russia | 8% | 481K |
🇳🇦 Namibia | 8% | 470K |
🇿🇦 South Africa | 5% | 321K |
🇧🇷 Brazil | 5% | 311K |
🇳🇪 Niger | 5% | 277K |
🇨🇳 China | 4% | 224K |
🇲🇳 Mongolia | 2% | 145K |
🇺🇿 Uzbekistan | 2% | 131K |
🇺🇦 Ukraine | 2% | 107K |
🌍 Rest of World | 9% | 524K |
Total | 100% | 6M |
Figures are rounded.
Outside the top three, Russia and Namibia both have roughly the same amount of uranium reserves: about 8% each, which works out to roughly 470,000 tonnes.
South Africa, Brazil, and Niger all have 5% each of the world’s total deposits as well.
China completes the top 10, with a 3% share of uranium reserves, or about 224,000 tonnes.
A caveat to this is that current data is based on known uranium reserves that are capable of being mined economically. The total amount of the world’s uranium is not known exactly—and new deposits can be found all the time. In fact the world’s known uranium reserves increased by about 25% in the last decade alone, thanks to better technology that improves exploration efforts.
Meanwhile, not all uranium deposits are equal. For example, in the aforementioned Olympic Dam, uranium is recovered as a byproduct of copper mining occurring at the same site. In South Africa, it emerges as a byproduct during treatment of ores in the gold mining process. Orebodies with high concentrations of two substances can increase margins, as costs can be shared for two different products.
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