n. (hăl*ō̍*trī"kīt)
[Gr. "a`ls sea + qri`x, tricho`s, hair.]
(Min.) An iron alum occurring in silky fibrous aggregates of a yellowish white color.
Halotrichite
| Dictionary: Hal·o·tri·chite |
n. (hăl*ō̍*trī"kīt)
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| Wikipedia: Halotrichite |
Halotrichite, also known as feather alum, is a highly hydrated sulfate of aluminium and iron. It is formed by the weathering and decomposition of pyrite commonly near or in volcanic vents. Its chemical formula is FeAl2(SO4)4⋅22H2O. It forms fibrous monoclinic crystals. The crystals are water soluble. Occurrences include the Atacama Desert, Chile, Dresden, Saxony, Germany, San Juan County, Utah, and Mont Saint-Hilaire, Canada.
The name is from Latin: halotrichum for salt hair.
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 | halotrichite (mineralogy) |
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| Cyanotrichite |
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 | Dictionary. Webster 1913 Dictionary edited by Patrick J. Cassidy Read more |
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