This form should be filled out and sent to The Meteoritical Society for official recognition
A new Associate Editor for
Northwest Africa meteorites, Caroline Smith
will be replacing outgoing AE Mike Zolensky.
During the transition period in 2005 October, the electronic submission form
should not be used.
All questions should be directed to
Harold Connolly.
Proposed
Name ......................................................................coordinates
if known eg... 44° 26′
00²
N 87° 38′
00²
E
City, County and Country (or area as in NWA; or place of purchase)
Find or Observed Fall:
Date (day/month/year if known)
Classification (Class) e.g., Achondrite (eucrite)
History : How the specimen was acquired and any visual or audible
observations such as Fireball or smoke trail .
Physical characteristics: Weight of total mass , the number of
pieces,
and external characteristics such as fusion crust and color .
Petrography:
1. Name of the research that
wrote the
description
and their scientific
institution (
in italics).
Use the abbreviations in
http://tin.er.usgs.gov/meteor/MetBullAddresses.php or
ARN Link
or define a new one here.
2. Describe the petrography only, no composition or interpretation.
Stick to the empirical data.
For example: The sample is covered in approximately 65% fusion
crust.
It contains olivine, pyroxene, Fe, Ni-metal and abundant (~80%)
chondrules.
The chondrules range
in size from ~ 1mm in apparent diameter to 0.5 mm.
The chondrule margins are clear and defined .
The stone contains a large variation in the textural types of chondrules
including BO, PO, POP, and PP.
If it is metamorphic in nature, a breccia, contains abundant opaque phases such
as carbon, numerous crack or micro-faults.
All such information should go into this section. Obviously, achondrite
descriptions will be different from chondrites.
What is presented is just an example .
Geochemistry:
1. Name of this researcher and their
institute (in italics)
if it is different from above
2. Give the composition of the major phases, trace element data, bulk
analysis, isotopic data if available .
If possible how the data was obtained (e.g., EMP, ICP-MS,
INAA, etc.).
For such data, subheading should be underscored, such as Oxygen Isotopes.
To report analytical data, use the following format: Si = 45.35, Mg = 36.45 (all
in wt% or ppm or ppb) etc.
Again, no interpretation and stick to the
empirical data.
Classification:
1.Name of classifier if different from anything listed above .
2.Give the major classification with (type in parentheses) e.g.,
Carbonaceous Chondrite (CR2)
3. Degree of shock .
4. Degree of weathering (W – scheme can only be applied to ordinary chondrites)
.
All others
use no weathering
categories but use terms such as minor, major etc.
A new scheme exists for CK meteorites that can be used if desired.)
Specimens:
1.A total of grams of type sample and one thin section (if any) on
deposit at institute XYZ .
Minimum required is 20 grams or 20% of mass
whichever is smaller .
2.List all masses and locations for all deposits .
eg.
Mr. G. J. Meteorite holds the main mass or an anonymous collector holds
the main mass.
This form has been edited by ARN / Kenneth Regelman April 3 , 2006