1276 views

Over 15,000 photos and growing!


  22 - August - 2022

This Month       Today's Picture       Select a Month

Submit a Picture

Where is My Picture?!

The Queue


Select by   Contributor

Met Name

Met Type

Thin Sections


Recent Comments

Coldwater (iron)   contributed by Bill Mikuska   MetBul Link


Roll Overs:       1   2      


View Larger Photos
View all entries for   Bill Mikuska (22)


Copyright (c) all material by Bill C. Mikuska.

What is a thin section?       What do all the colors mean?    
  Iron

TKW 18.4 kg. Fall not observed. Found 1923, Kansas, USA.




   


Bill writes:
When teaching polarized light microscopy to some of my independent study students some would ask "what should I see?" My answer would be "what do you see"!

This heavily weathered meteorite specimen in thin section was obtained from Ann Black in November 2009. She acquired it in trade from another meteorite dealer, Edwin Thompson. Labeled as "Iron / Nickel Oxide" and "Coldwater" suggested a must-have for this chemist. In reflected raking and transmitted white light both the oxide(s) and the remaining metallic phase are evident (one polar present). With only transmitted white light (one polar), one can easily see why hematite has the name that it does.
Click to view larger photos

#1

#2
Found at the arrow (green or red) on the map below
 


Comment on this MPOD                      
Name
Comment

980 max length
  Please - NO Dealer Ads in the comments
but pictures from dealers are gladly accepted

Tomorrow

NWA 14995
Scott McGregor

This Month

1 picture in the Queue
Anne Black
 8/22/2022 12:54:19 PM		 Exactly, John and John. And on Pic #2 I see a river of lava, just like what they are experiencing in Iceland.
John Lutzon
 8/22/2022 10:45:40 AM		 Wow JD, before I read your reply, I thought Exactly same. I'm syncing to the collective--save me. Thank you Bill, I too enjoy scoping TS's. The only words anyone within earshot hear from me is "wow, oh wow".
John Divelbiss
 8/22/2022 6:12:17 AM		 Dr. Mikuska to his patients/students..."What do you see in this image"? JD's Answer for pic #1...a James Bond movie opening with lots of fire. Very interesting pics Bill.
 

Hosted by
Tucson Meteorites		 Server date and time
5/6/2024 8:16:48 AM		 Last revised
05/05/24		 Terms of Use Unsubscribe