Wavellite

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Wavellite is an aluminium basic phosphate mineral with formula Al3(PO4)2(OH, F)3·5H2O. Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters.[1]

Discovery and occurrence

File:Wavellite-199443.jpg
Wavellite from the Avant Mine, Garland County, Arkansas, showing spherical structure (size: 3.4 x 2.0 x 1.1 cm)

Wavellite was first described in 1805 for an occurrence at High Down, Filleigh, Devon, England and named by William Babington in 1805 in honor of Dr. William Wavell (1750–1829),[2] a Devon-based physician, botanist, historian, and naturalist, who brought the mineral to the attention of fellow mineralogists.[3][2][1][4]

It occurs in association with crandallite and variscite in fractures in aluminous metamorphic rock, in hydrothermal regions and in phosphate rock deposits.[5] It is found in a wide variety of locations, notably in the Mount Ida, Arkansas area in the Ouachita Mountains.

It is sometimes used as a gemstone.[6] Template:Clearleft

See also

References

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External links

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  1. a b Template:Cite EB1911
  2. a b Cite error: Invalid <ref> tag; no text was provided for refs named Mindat
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  4. Curtis, Samuel and Hooker, William Jackson (1827). Memoirs of the Life and Writing of the Late Mr. William Curtis, Curtis's Botanical Magazine; or Flower Garden Displayed, v. 1 (new series), v-xxxii.
  5. Cite error: Invalid <ref> tag; no text was provided for refs named HBM
  6. Gemstones: Properties, identification and use by Arthur Thomas, p. 132.