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Science 4 July 1969:
Vol. 165. no. 3888, pp. 59 - 60
DOI: 10.1126/science.165.3888.59
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Articles

Pecoraite, Ni6Si4O10(OH)8, Nickel Analog of Clinochrysotile, Formed in the Wolf Creek Meteorite

George T. Faust 1, Joseph J. Fahey 1, Brian Mason 2, and Edward J. Dwornik 1

1 U.S. Geological Survey, Washington, D.C. 20242
2 U.S. National Museum, Washington, D.C. 20560

Pecoraite is a new phase in the natural system H2O-NiO-MgOSiO2, the nickel analog of clinochrysotile. It occurs in cracks in the Wolf Creek meteorite in Australia where it was formed under hydrothermal conditions. Particles of pecoraite are very small curved plates which have begun to coil; some have achieved spiral form.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)