----- Original Message ----- From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Saturday, March 12, 2005 8:55 AM
Subject: Re: [meteorite-list] Schreibersite & Cohenite
Is there a relatively easy and reliable way to visually pick the difference between Schreibersite and Cohenite in iron meteorites?
Hello Jeff and List,
Here is some information from Buchwald that may prove helpful in identifying schreibersite and cohenite in hand samples:
Buchwald V.F. (1975) Handbook of Iron Meteorites, Vol. 1:
Cohenite (p. 100):
- cohenite is brilliant w h i t e - it is very hard, significantly harder than schreibersite - characteristic of group I irons (also occurs in other irons)
Schreibersite (p. 104):
- schreibersite is magnetic - it is y e l l o w in reflected light - compared to cohenite distinctly more brownish - softer and much more brittle than cohenite
See also: O.R. Norton (2002) Cambridge Encyclopedia of Meteorites, Appendix C, Minerals in meteorites (pp. 311-313).
Best wishes,
Bernd
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