Macaulayite is a red, earthy,

monoclinic In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic ...

mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. ...

, with the chemical formula ( Fe³⁺, Al)₂₄ Si₄ O₄₃( OH)₂. It was discovered in the 1970s by Jeff Wilson and named after the

Macaulay Institute The Macaulay Institute, formally the Macaulay Land Use Research Institute and sometimes referred to simply as The Macaulay, is a research institute based at Aberdeen in Scotland, which is now part of the James Hutton Institute. Its work cov ...

Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar Dheathain ; la, Aberdonia) is a city in North East Scotland, and is the third most populous city in the country. Aberdeen is one of Scotland's 32 local government council areas (as Aberdeen City), ...

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to th ...

. The only known source of macaulayite in the world is a quarry at the foot of

Bennachie Bennachie ( ; Scottish Gaelic: ''Beinn na Cìche'') is a range of hills in Aberdeenshire, Scotland.Whiteley, A.W.M. (Ed.) (1976). ''The Book of Bennachie''. The Bailies of Bennachie. . Mostly anecdotes and verse about the mountain and its surrou ...

Aberdeenshire Aberdeenshire ( sco, Aiberdeenshire; gd, Siorrachd Obar Dheathain) is one of the 32 council areas of Scotland. It takes its name from the County of Aberdeen which has substantially different boundaries. The Aberdeenshire Council area incl ...

, and it is formed by

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies und ...

which has been weathered by tropical climates from before the last ice age. The substance is currently being studied by

NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedi ...

, as it is speculated that this is the substance which gives the planet

Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin atmos ...

its colour and it could prove that

life on Mars The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no proof of past or present life has been found on Mars. Cumulative evidence suggests that during the ...

can be sustained.

Study by NASA

The American space agency

is currently carrying out studies on macaulayite, as they believe that the substance might be present on the planet Mars. NASA scientists speculate that macaulayite may be what gives the planet its red colour. Also, as macaulayite is formed in the presence of

water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as ...

, the existence of the mineral on Mars may help to prove that the planet could contain resources needed to sustain life. In an interview with the

BBC #REDIRECT BBC Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board exam. ...

, Wilson said: "It is exciting because this particular mineral contains water. It's a very fine grain mineral and water is bound to the inner surfaces. There's been a lot of speculation about the occurrence of

water on Mars Almost all water on Mars today exists as ice, though it also exists in small quantities as vapor in the atmosphere. What was thought to be low-volume liquid brines in shallow Martian soil, also called recurrent slope lineae, may be grains of ...

. We don't know but it could be associated with this mineral." Janice Bishop, a Mars specialist from the

Search for Extra Terrestrial Intelligence Institute The SETI Institute is a not-for-profit research organization incorporated in 1984 whose mission is to explore, understand, and explain the origin and nature of life in the universe, and to use this knowledge to inspire and guide present and fut ...

also told the BBC that: "All life forms as we know it require liquid water so if we can actually find periods of time or places on the planet where there was standing water then the chance of life having formed increase greatly."

References

{{Reflist

External links

Webmineral.com
Iron(III) minerals Aluminium minerals Phyllosilicates Monoclinic minerals