Several broken pieces, apparently originating
from a single mass totaling about 11kg were obtained by a
meteorite dealer in the United States from a meteorite hunter in
Nigeria. The Nigerian meteorite hunter also included a typed
sheet claiming to be a police report describing a fall and
recovery of a meteorite on October 31, 2001. The condition of the
meteorite, including observation of caliche deposits on the
crust, is inconsistent with the report. The mean olivine
composition is Fa21.8, and the mean low-Ca pyroxene is Fs19.9,
Wo1.0, so this classifies the meteorite as an L chondrite.
Goronyo is petrologic type 4: chondrules of all textural types
are clearly defined, matrix is recrystallized and some monoclinic
low-Ca pyroxene is present. It is moderately shocked, with
undulatory extinction and weak mosaicism in olivine, hence it is
shock stage S4. There is minor oxidation of metal, hence
weathering grade W1. [This meteorite was classified by the
University of New Mexico Institute of Meteoritics. It was to have
been included in the 2005 Meteoritical Bulletin, but through some
inadvertence was not. I am assured that it will be included in
the 2006 issue.]
# GOR36-3
#GOR37-1
# GOR58-8
# GOR60-2
ABOUT SCALE
Each photo has a small cube one centimeter on a side. The
photo above gives you an idea how big it is. The ruler is
in inches at the top. The coin is a US dime. If you are
interested in a specimen, I will be happy to send you the
dimensions or a photo with different scale.