Celadonite

Source: Wikipedia, the free encyclopedia.
Not to be confused with Caledonite.
Celadonite
Radioactive 9.11% (K)
References[2][3][4]

Celadonite is a

phyllosilicate of potassium, iron in both oxidation states, aluminium and hydroxide
with formula K(Mg,Fe2+
)(Fe3+
,Al)[Si
4O
10](OH)
2.

It crystallizes in the

specific gravity of 3. It forms vesicle fillings and linings in altered basaltic lavas. Early research suggests this mineral has ties to weakly metamorphosed plutonic rocks during formation, and is also found with montmorillonite clays or zeolite crystals.[5] Association with zeolites may indicate these minerals favor the same underlying conditions of crystal growth.[5]

It was first described in 1847 on

Verona, Italy. The name is from the French celadon, for sea-green. It is one of two minerals, along with glauconite, used in making the pigment known as green earth.[6]

Common impurities are manganese, calcium and sodium (previously known as natrium).

References

  1. S2CID 235729616
    .
  2. ^ Mineralienatlas
  3. ^ Mindat w/ localities
  4. ^ Webmineral
  5. ^ a b Wise, W.S.; Euster, H.P (August 1964). "Celadonite: synthesis, thermal stability and occurrence. American Mineralogist, 1974 (7-8): 1031-1083". GeoSciencedWorld.
  6. S2CID 95885389
    .
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