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Because helium is trapped in the subsurface under conditions that also trap natural gas, the greatest natural concentrations of helium on the planet are found in natural gas, from which most commercial helium is extracted. The concentration varies in a broad range from a few ppm to more than 7% in a small gas field in San Juan County, New Mexico.
Helium is grouped with the noble gases and not with the alkaline earth metals, ... Ca and Mg are found in nature in many compounds such as dolomite, ...
Helium is also present as up to 7% of some natural gas sources, [20] and large sources have over 0.5% (above 0.2% makes it viable to extract). [21] The fraction of 3 He in helium separated from natural gas in the U.S. was found to range from 70 to 242 parts per billion.
While helium-4 is common on Earth, helium-3 is more readily found elsewhere in the cosmos, which is why scientists were surprised to detect a larger amount of the element than had been previously ...
A global helium shortage has doctors worried about one of the natural gas’s most essential, ... But helium — a nonrenewable element found deep within the Earth’s crust — is running low ...
Natural hydrogen (known as white ... In 2024, a natural deposit of helium and hydrogen was discovered in Rukwa, Tanzania., [18] ... notably are found in Russia.
Abundance (atom fraction) of the chemical elements in Earth's upper continental crust as a function of atomic number; [5] siderophiles shown in yellow Graphs of abundance against atomic number can reveal patterns relating abundance to stellar nucleosynthesis and geochemistry.
The abundance of the chemical elements is a measure of the occurrences of the chemical elements relative to all other elements in a given environment. Abundance is measured in one of three ways: by mass fraction (in commercial contexts often called weight fraction), by mole fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume fraction.