Aerinite

    Aerinite (Ca₄(Al,Fe,Mg)₁₀Si₁₂O₃₅(OH)₁₂CO₃·12H₂O)^[1] is a bright yellow to light brown inosilicate mineral. It crystallizes in the monoclinic system and occurs as fibrous masses and coatings. It has a vitreous luster, a specific gravity of 2.48 and a Mohs hardness of 3.^[2]

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It is a low temperature hydrothermal phase occurring in zeolite facies alteration of mafic rocks. Associated minerals include prehnite, scolecite and mesolite.^[1]

Its name comes from a Greek root "aerinos," meaning "atmosphere" or "sky".^[3]

References

1. ^ ^{a b} http://rruff.geo.arizona.edu/doclib/hom/aerinite.pdf Handbook of Mineralogy
2. ^ http://www.webmineral.com/data/Aerinite.shtml Webmineral data
3. ^ http://www.mindat.org/min-34.html Mindat.org