โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Potassium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้‰€
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Kalium
  • ๐Ÿ‡ซ๐Ÿ‡ท Potassium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Kalium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืืฉืœื’ืŸ
  • ๐Ÿ‡ฎ๐Ÿ‡น Potassio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ซใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Potássio
  • ๐Ÿ‡ท๐Ÿ‡บ ะšะฐะปะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Potasio
  • ๐Ÿ‡ธ๐Ÿ‡ช Kalium

Potassium: geological information

Potassium metal is far too reactive to be found uncombined in nature. The element is quite abundant and makes up about 1.5 % by weight of the earth's crust. Potassium is found extensively as potash (KOH). It is mined in Germany, USA, and elsewhere. Minerals such as sylvite (KCl), carnallite, and langbeinite, are found in ancient lake and sea beds. That as Saskatchewan in Canada contains about 10,000,000,000 tonnes of potassium chloride. Potassium is found in seawater, but in relatively small amounts compared to sodium.

Abundances of potassium in various environments

In this table of abundances, values are given in units of ppb (parts per billion; 1 billion = 109), both in terms of weight and in terms of numbers of atoms. Values for abundances are difficult to determine with certainty, so all values should be treated with some caution, especially so for the less common elements. Local concentrations of any element can vary from those given here an orders of magnitude or so and values in various literature sources for less common elements do seem to vary considerably.

Abundances for potassium in a number of different environments. Use the links in the location column for definitions, literature sources, and visual representations in many different styles (one of which is shown below)
Location ppb by weight ppb by atoms
Universe 3000 100
Sun 4000 100
Meteorite (carbonaceous) 710000 370000
Crustal rocks 15000000 7800000
Sea water 416000 65800
Stream 2300 59
Human 2000000 320000
Image showing periodicity of the logarithm of the abundance in the earth's crust of the chemical elements as a heat map on a periodic table grid.
Image showing periodicity of the logarithm of the abundance in the earth's crust of the chemical elements as a heat map on a periodic table grid.
Image showing periodicity of the logarithm of the abundance (by atom rather than weight) in the sun of the chemical elements as a heat map on a periodic table grid.
Image showing periodicity of the logarithm of the abundance (by atom rather than weight) in the sun of the chemical elements as a heat map on a periodic table grid.

The chart above shows the log of the abundance (on a parts per billion scale) of the elements by atom number in our sun. Notice the "sawtooth" effect where elements with even atomic numbers tend to be more strongly represented than those with odd atomic numbers. This shows up best using the "Bar chart" option on the chart.

cartogram depicting abundance of elements in the earth's crust
A cartogram depicting the abundance of elements in the earth's crust. Squares for each element are distorted in proportion to the numerical value of the abundance.