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2021 Fall Date Project

The MPOD Caretakers want to present meteorite falls on their fall dates. For example, Sikhote Aline on 12 February.

This Project will not dip into the MPOD archives so the Caretakers will appreciate anything you can contribute.

To reserve a date just let us know. Thank you in advance :)

Fall Calendar           Dates reserved so far

  

 
Estherville   contributed by Paul Swartz, IMCA 5204   MetBul Link


Roll Overs:       1   2   3   4   5    


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View all entries for   Meteorite (14)   Paul Swartz (237)


Copyright (c) Paul Swartz. All rights reserved.

Find/Fall Anniversary
13.5 grams.   Mesosiderite-A3/4

TKW 320 kg. Observed fall 10 May 1879, in Emmet County, Iowa.

     


Paul writes:
Photos 1 and 2 were taken under indirect sunlight.

Photos 3, 4, and 5 were taken with cool white LED light at an angle of incidence of about 45 degrees. These pictures were originally much bluer but I reduced that in PhotoShop. The blue spot in photo 3 indicates just how blue the photos were right out of the camera. I was quite surprised to see all of the green and yellow crystals (probably orthopyroxene).


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#1

#2

#3

#4

#5
Found at the arrow (green or red) on the map below
 


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This Month

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Tracy Latimer
 5/13/2021 1:45:00 PM		 I bought a slice from Anne Black years ago, and it has one of those small green crystals, about 2mm. The slice is thin enough you can see light through it! I had thought it was olivine too; maybe not :)
Twink Monrad
 5/10/2021 3:05:51 PM		 I treasure the slice I have of EV, and Larry and I drove there on a road trip through Iowa several years ago.
Steve Brittenham
 5/10/2021 12:31:27 PM		 Mesosiderites are so hard to photograph. It was nice of you to include direct and glancing angle shots to help us better see the beauty of your piece.
Paul Swartz
 5/10/2021 9:33:40 AM		 Hi Bernd. I'm not sure either. The MinDat link above mentions "orthopyroxene" and makes no mention of "olivine" The Meteorite Times link goes to an article by Mark Bostick mentions "diogenite material" which implies orthopyroxene.

So, I changed the description.
Bernd Pauli
 5/10/2021 5:59:50 AM		 Hello Paul and Matthias aren't these green crystals you mention pyroxenes instead of olivines. Hmm, not quite sure!
matthias
 5/10/2021 3:08:05 AM		 Estherville is definitely a beauty among mesosiderites. And your pics are great, Paul. Surprising indeed to see these tiny olivine crystalls. I just had a look on my slice of EV and, yes, there they're! Never had realized that before.
 

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