Pallasite

 

It was one of those interesting days... I had arrived after two long days drive from northern California to my fathers house in Arizona, While sitting enjoying an iced tea, my father comes over and says:

"You can't have it, but the guy who owns it thinks it's a meteorite"... and hands me a nice chunk of heavy rock.

 

What a thing to be handed....

 

We started talking, and I got more of the story, the guy who owned it, got it 17-18 years ago from one of his workers, who said he got it from "near Wickenburg" (west-central Arizona). They didn't know what it was at the time, and even thought it might be a assay sample gone bad or discarded. The bowl shape gives that impression. In any case, it had set around in various places until the owner met up with a rock hound who suggested it might be a meteorite. At some point, someone had tried to pry out some of the green crystals, and then took a saw to it to see what was inside. (and ruined a saw blade doing it!) Obviously he hadn't gotten all that far! However, it probably made it the easiest meteorite to identify without resorting to any tests other than simple observation.

The saw cut shows off nice shiny metal, and the green of the olivine is outrageous. As I continued to look at it, I realized that the brown stained pits were where olivines had "burned" out during it's descent..And what a great shape! 

We put it on a scale the next day and it is in the vicinity of 9 pounds (4+ kg). Cool!!! (not an accurate scale!)

 

A few days later I was at NAU and had a chance to chat with Dr. Wittke and then check the NHM database - no pallasites listed from Arizona, and the closest ones are over in New Mexico. Several hundreds of miles away.

 

Update, November 2007 - We are going to try and get it classified. The owner did manage to saw off a bit, (yes, not all that smoothly) and ended up selling "an ounce and a bit" to someone. See the new image(s) [Click Here] of the cut face. Do you have any doubts? How many meteor-wrongs have metal surrounding olivine crystals? (only one, so far) After classification/naming, it will most likely be put on the market.

 

 

Top / side view showing cut

Bottom view - cut and olivines

Closer view of olivine / "burned out" section

A shot showing the nice green of the undamaged olivine

 

 

Olivine and a hole

Olivine "crust" in it's former hole

Possible rollover lines (??)

Possible flight markings?

Top view

Oblique view

 

Bottom View

 

New Images - November 2007

 

 

Close up of the first image - some image processing to bring out the greens.

 

 

Images and text copyright 2007 ted Brattstrom and *****
Contact: 
ted Brattstrom