[meteorite-list] Holbrook Tektites ( Heat Testing of Tektites)
bernd.pauli at paulinet.de
bernd.pauli at paulinet.de
Fri Aug 27 13:57:21 EDT 2010
Hello Mark, Carl, List,
Mark wrote:
"I have collected a few of the Arizonaites (Saffordites?) in the field and
when I first saw them, I was fooled into thinking they were tektites. They
look to be solution weathered and I wonder if that in some way removed
the water that normally is in obsidian (?)."
09 Apr 1999, our late tektite expert Darryl Futrell wrote to the MetList:
I have many examples. I found some beauties east of *Safford*, Arizona back in
the 1960s. Three are illustrated in the May 1967 issue of Sky & Telescope. Some
start out as "Apache tears" (Safford site) & others break out of obsidian flows.
Often they become worn down to oval shapes that look like splashform tektites. But
all I have ever seen are banded, whereas splashform tektites all have a contorted
flow structure. Sometimes they even have tektite-like colors, but they are never of
tektite quality & they will eventually devitrify. Photos of two of them are in the
April 1972 Lapidary Journal (by Barnes).
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Best wishes,
Bernd
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