Aluminoceladonite is a low-temperature

potassium Potassium is a chemical element; it has Symbol (chemistry), symbol K (from Neo-Latin ) and atomic number19. It is a silvery white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to ...

dioctahedral

mica Micas ( ) are a group of silicate minerals whose outstanding physical characteristic is that individual mica crystals can easily be split into fragile elastic plates. This characteristic is described as ''perfect basal cleavage''. Mica is co ...

mineral which is an end-member in the

illite Illite, also called hydromica or hydromuscovite, is a group of closely related non-expanding clay minerals. Illite is a secondary mineral precipitate, and an example of a phyllosilicate, or layered alumino-silicate. Its structure is a 2:1 sandw ...

-aluminoceladonite

solid solution A solid solution, a term popularly used for metals, is a homogeneous mixture of two compounds in solid state and having a single crystal structure. Many examples can be found in metallurgy, geology, and solid-state chemistry. The word "solutio ...

series. The chemical formula for aluminoceladonite is K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂.

Occurrence

Aluminoceladonite is often referred to as a rare mineral, though its actual abundance may be underestimated due to difficulty of identification. Aluminoceladonite, along with other phyllosilicate minerals in the illite-aluminoceladonite solid solution series, has been observed mainly among finely dispersed, mostly inter-layer-deficient,

aluminium Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

-rich potassium-dioctahedral mica varieties occurring in

sedimentary rock Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or de ...

References

{{Phyllosilicates Potassium minerals Mica group Monoclinic minerals Minerals in space group 12 Aluminium minerals Magnesium minerals