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59Ni and Hoba
- To: ams000@aztec.asu.edu
- Subject: 59Ni and Hoba
- From: Bernd Pauli HD <bernd.pauli@lehrer1.rz.uni-karlsruhe.de>
- Date: Fri, 02 Apr 1999 00:39:13 +0200
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- References: <199904010233.TAA20637@aztec2.asu.edu>
- Resent-Date: Thu, 1 Apr 1999 18:11:53 -0500 (EST)
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STEVEN R. SCHONER wrote:
> Interesting, was the 59Ni, nuclide taken from the
> oxide, and or the iron? And what, if any was the degree
> of uncertainty in the terrestrial age of the Hoba meteorite?
GOLDEN D.C. et al. (1995) Chemistry and mineralogy of oxidation
products on the surface of the Hoba nickel-iron meteorite (Meteoritics
30-4,1995, page 418):
EXPERIMENTIAL
A sample of the oxide layer of the Hoba meteorite was collected in 1991
by M.E. Zolensky. The sample was magnetic, disk-shaped, and 4-6 cm in
diameter. The meteorite-facing side was black, and the soil-facing side
was gray with a coating of calcium carbonate. A 20-30 cm-thick layer of
oxide was present around the base of the meteorite. The oxide layer had
cracks in-filled with calcium carbonate.
Best regards,
Bernd
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