Unveiling 40 Rare Metal Records You Must Listen to

Table of Contents

Purest metal – Germanium

Germanium purified by zonal fusion technology with a purity of “thirteen nine” (99.999999999%).

Purest metal - Germanium

The most metals – Aluminum

About 8 percent of the earth’s crust. Aluminum compounds are found all over the earth. Common soil also contains a lot of aluminas.

The most metals - Aluminum

Trihydrous bauxite is a hydroxide mineral of aluminum and is the main component in bauxite deposit.

The fewest metals – Polonium

A very small amount in the crust.

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The fewest metals - Polonium

Lightest metal – Lithium

Half the weight of water, Not only can it float on water, it can float in kerosene.

Lightest metal - Lithium

The first lithium ore to be found was perthite.

The hardest metal to melt – Tungsten

The melting point of tungsten is 3410°C, and its boiling point is 5700°C. When a lamp is lit, the filament temperature rises above 3000°C, and only tungsten is capable of withstanding such high temperatures. China is the world’s largest storage country for tungsten, which is primarily found in the form of scheelite and wolframite.

The hardest metal to melt - Tungsten

 Scheelite

Metals with the lowest melting point – Mercury

The freezing point is 38.7 ℃.

Metals with the lowest melting point - Mercury

Cinnabar is the main mineral raw material for mercury refining. The crystal can be used as an important material for laser technology.

The most productive metal – Iron

Iron is the metal with the highest annual production output. In 2017, the global output of crude steel reached 1.6912 billion tons. Additionally, iron is the second most abundant metallic element found in the Earth’s crust.

The most productive metal - Iron

Hematite is widely distributed in nature, is an important raw material of iron, and can also be used as a red pigment.

Metals that absorb gas best -Palladium

One volume of metal palladium at room temperature can absorb 900-2,800 volumes of hydrogen.

Metals that absorb gas best -Palladium

Platinum-palladium mine

The most malleable metal – Gold

1 gram of gold can be pulled into 4000 meters long filaments; If beaten into gold, the thickness can be up to 5 x 10e-4 mm.

The most malleable metal - Gold

The most ductile metal -Platinum

The thinnest platinum wire is only 1/5000mm in diameter.

The most ductile metal -Platinum

Native platinum

The most conductive metal – Silver

It is 59 times more conductive than mercury

The most conductive metal - Silver

Native silver

The most abundant metallic elements in human body – Calcium

Calcium is the most abundant metallic element in human body, accounting for approximately 1.4% of human body.

The most abundant metallic elements in human body - Calcium

The main composition of dolomite is CaMg(CO3)2

The top-ranked transition metal – Scandium

Scandium has an atomic number of only 21, the most advanced transition metal.

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The top-ranked transition metal - Scandium

The most expensive metal – Californium

The world offered only about a gram of californium in 1975, with a gram going for about $1 billion.

The Most expensive meta - Californium

The easiest superconducting element to use – Niobium

When it is cooled to a temperature of -263.9℃, it will be metamorphosed into a superconductor which has almost no resistance.

The easiest superconducting element to use - Niobium

 Pyrochlore. A mineral containing niobium

Heaviest metal – Osmium

Iridium, which weighs 22.59 grams per cubic centimeter, its dense is about twice as lead and three times as iron.

Heaviest metal - Osmium

The least hard metal – Sodium

Sodium: it has a mohs hardness of 0.4 and can be cut with a knife at room temperature.

The least hard metal - Sodium

 Sodium chloride

The hardest metal – Chromium

Chromium (Cr), known as “hard bone”, is a silvery white metal that is extremely hard and brittle. Mohs is 9, second only to diamonds.

The hardest metal - Chromium

 Chromium lead ore is the first artificial mineral to be discovered

The earliest used metal – Copper

According to research, China’s earliest bronze ware has a history of more than 4000 years.

The earliest used metal - Copper

  Chalcopyrite. Chinese Shang Dynasty already used chalcopyrite to refine copper

The metal with the most scope of liquid – Gallium

Its melting point is 29.78 ℃, the boiling point of 2205 ℃

The metal with most scope of liquid - Gallium

 Gallium is a by-product of the industrial processing of sphalerite, pyrite, bauxite and germanium. The picture shows pure gallium.

Metals most likely to produce an electric current when exposed to light – Caesium

Its main use is the production of various photocell.

Metals most likely to produce an electric current when exposed to light - Caesium

 Cesium zeolite, formerly known as cremanite

The most active element in alkaline earth metals – Barium

The chemical activity of barium is very big, it is the most active in alkaline earth metals. It was introduced as a metallic element in 1808.

The most active element in alkaline earth metals - Barium

 The most common mineral in nature is barite

The metal that fears cold most – Tin

When the temperature is lower than 13.2 ℃, tin begins to collapse; when the temperature below -30 ~ -40 ℃, it will immediately turn into powder, this phenomenon is often called “tin pest”.

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The metal that fears cold most - Tin

 Tin pest

Metals most toxic to humans – Plutonium

It is 486 million times as deadly as arsenic and is the most potent carcinogen, with 1 x 10-6 grams of plutonium able to cause cancer.

Metals most toxic to humans - Plutonium

The greatest natural gold

The discovery was made on October 19, 1872 by the star of hope gold mine in the hillender region of Australia, weighing 214.3 kilograms.

The greatest natural gold

 The largest natural gold was photographed with its discoverer in 1872.

The largest natural silver

Found in the Sonora region of Mexico, it weighed 1026.5 kilograms.

The largest natural silver

Native silver

Largest natural copper

Weighing 26 tons, it was discovered in 1977 at the horton quincy mine in the US state of Michigan.

Largest natural copper

The largest reserves of radioactive elements in the sea – Uranium

Uranium is the most abundant radioactive element in seawater, with an estimated 4 billion tons, 1544 times the amount found on land.

The largest reserves of radioactive elements in the sea - Uranium

Uranium ore

The most abundant elements in seawater – Potassium

Potassium is present in seawater in the form of potassium ions, with a content of about 0.38g/kg, which is the element with the highest content in seawater.

The most abundant elements in seawater - Potassium

 Nitrate can be directly produced by mining and enrichment

The metal with the highest atomic number of stable elements – Lead

Lead has the highest atomic number of all stable chemical elements.

There are four stable isotopes in nature: lead 204, 206, 207 and 208

The metal with the highest atomic number of stable elements - Lead

Galena

The most common human allergenic metal – Nickel

Nickel is the most common sensitizing metal and about 20 percent of people are allergic to nickel ions.

The most common human allergenic metal - Nickel

 Nickel mine, also known as “red nickel mine”

The most important metals in aerospace – Titanium

Titanium is a grey transition metal, characterized by lightweight, high strength and good corrosion resistance, which is praised as “space metal.

The most important metals in aerospace - Titanium

 Titanium ore

The most acidic metal – Tantalum

In both cold and hot conditions, it does not react with hydrochloric acid, concentrated nitric acid and “chloroazotic acid”. Even placed in 175 ℃ concentrated sulfuric acid for a year, the corrosion thickness is only 0.0004 mm.

The most acidic metal - Tantalum

Tantalite

Metal with the smallest atomic radius – Beryllium

Its atomic radius is 89pm

Metal with the smallest atomic radius - Beryllium

The most corrosion-resistant metal – Iridium

Iridium acid is highly chemically stable, insoluble in acids, and only the spongy iridium slowly dissolves in hot aqua regia. If it is in a compact state, even boiling aqua regia cannot corrode it.

The most corrosion-resistant metal - Iridium

 Iridium is naturally present in the platinum mine

The most distinctive metal in color – Copper

The pure metal copper is in mauve.

The most distinctive metal in color - Copper

 Copper powder

Metals with the most isotopes – Tin

There are 10 stable isotopes

Metals with the most isotopes - Tin

The heaviest alkali metals – Francium

Formed by the decay of actinides, is a radioactive metal. It’s the heaviest metal in the alkali metal. The atomic mass is 223.

The heaviest alkali metals - Francium

The last metal found by man – Rhenium

Super metal rhenium is a truly rare element, plus it does not form fixed minerals, usually associated with other metals. This makes it the last element found in nature.

The last metal found by man - Rhenium

 Metal rhenium exists in molybdenum

The most special metals at room temperature – Mercury

At room temperature, metals are solid, but mercury is the most unusual, being the only liquid metal at room temperature.

The most special metals at room temperature - Mercury

 Liquid mercury, also known as “mercury”

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