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Miller Range 11207
Basic information Name: Miller Range 11207
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 11207
Observed fall: No
Year found: 2011
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 247 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 35(2)  (2012)  R6
Meteoritical Bulletin:  MB 101  (2012)  R6
Recommended:  R6    [explanation]

This is 1 of 14 approved meteorites classified as R6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Field number: 21579
Approved 4 Sep 2012
Writeuphelp
Writeup from AMN 35(2):
Sample Number MIL 11 207
Newsletter 35,2
Location Miller Range
Field Number 21579
Dimensions 7.0 x 6.5 x 2.5
Weight 247.34
Original Classification R6 Chondrite
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 39-41; Ferrosilite (mol%): 20
Weathering
Ce
Fracturing
B
Macroscopic Description - Kathleen McBride
Dark brown/black fusion crust with polygonal fractures and evaporites covers the exterior surface. The evaporites are a light blue-green to light lime green color. The interior is brownish gray in color with lighter white circular splotches shaped within a fine grained crystalline texture.
Thin Section Description (,2) - Cari Corrigan, and Tim McCoy
The section is comprised of coarse grained (100-200 micron), equigranular olivine, sometimes poikilitically enclosed in mm-sized low-Ca pyroxene with sulfides, oxides and hornblende (yes, hornblende). Olivine compositions are Fa40, pyroxenes are Fs20Wo27. The meteorite is an R6 chondrite with pronounced shock effects. It is petrologically distinct from the LAP 04840 pairing group, although it shares the common feature of being a hydrous phase bearing R chondrite.
Antarctic Meteorite Images for Sample MIL 11207
Thin Section Photo of Sample MIL 11207 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 11207 in Reflected Light with 1.25X Magnification  Thin Section Photo of Sample MIL 11207 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample MIL 11207 in Plane-Polarized Light with 2.5X Magnification 
Thin Section Photo of Sample MIL 11207 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample MIL 11207 in Cross-Polarized Light with 2.5X Magnification  Lab Photo of Sample MIL 11207 Showing Interior View  Lab Photo of Sample MIL 11207 Showing Bottom View 
Lab Photo of Sample MIL 11207 Showing East View  Lab Photo of Sample MIL 11207 Showing North View  Lab Photo of Sample MIL 11207 Showing South View  Lab Photo of Sample MIL 11207 Showing Top View 
Lab Photo of Sample MIL 11207 Showing West View  Lab Photo of Sample MIL 11207 Showing Pie Shot View 

Writeup from AMN 36(1):

Miller Range 11207 (MIL 11207)

Antarctica

Found: 2011

Classification: Rumuruti chondrite (R6)

Revised description (announced vol. 35, no. 2): The section is comprised of coarse grained (100-200 micron), equigranular olivine, sometimes poikilitically enclosed in mm-sized feldspar with sulfides, oxides and hornblende (yes, hornblende). Olivine compositions are Fa40, feldspar is An10Or4. The meteorite is an R6 chondrite with pronounced shock effects. It is petrologically distinct from the LAP 04840 pairing group, although it shares the common feature of being a hydrous phase bearing R chondrite.

Data from:
  MB101
  Table 0
  Line 0:
Date:2011
Mass (g):247.3
Pieces:1
Class:R6
Weathering grade:Ce
Fayalite (mol%):39-41
Ferrosilite (mol%):20
Wollastonite (mol%):27
Classifier:SI
Type spec mass (g):247.3
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections		 JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 35(2) (2012), JSC, Houston
Published in Antarctic Meteorite Newsletter 36(1) (2013), JSC, Houston
Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:

Antarctica
Coordinates:
     Recommended::   (83° 27' 11"S, 156° 41' 42"E)

Statistics:
     This is 1 of 44048 approved meteorites from Antarctica (plus 3802 unapproved names)
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