Tuesday, 1 March 2016

Blaine Reed Meteorites for Sale - List 186 - Moon rocks and more

Blaine Reed Meteorites for Sale - List 186 - Moon rocks and more

Blaine Reed
P.O. Box 1141
Delta, CO 81416
Ph/fax (970) 874-1487

…………………………………………………………LIST 186

March 1, 2016

Dear collectors,
I realize that I just sent out a list last week. However, that list was actually delayed from when it should have normally gone out; February 16th. No way that could have happened though as I was not even home form the show yet (I didn’t get back until after 9pm on the 18th). It just so happens that the very first day of this month is also the first Tuesday of the month as well my scheduled 1st offering of the month if I am going to have one. So, despite the potential of seeming like I am trying to spam or overload people with new offerings, here is my after Tucson list #2.

CANYON DIABLO, Arizona: Coarse octahedrite. Found 1891.
This is a piece of the oxide shale that some believe actually formed as kind of a fusion crust on the incoming main mass of this fall (which some believe was actually more likely an incoming swarm of pieces of various sizes and not just a single railroad box car or so sized piece). The theory here is that the hot surface of the incoming mass(s) interacted with the oxygen in the atmosphere to form this oxide “crust” that then spalled off. On the other hand (gads, now I am sounding like an economist) most believe that this stuff forms by the simple oxidation of a piece of the iron meteorite in the ground. Regardless, this is a nice solid piece that shows some neat deep cracks (that do not affect the solidness of the piece) on one side, kind of resembling a Rizalite Philippinite. This is from an old collection and comes with an old info label that is full of errors compared to what we know these days (like the fall was 20,000 years ago instead of 50,000, the blast was 1.7 megatons instead of closer to 5 or 10 and the “age” is only 540million years old based on cosmic ray exposure).
61.0 gram solid natural fragment – 45mm x 35mm x 18mm - $12

This is a nice medium grade piece that I got as part of a collection. It has some fogginess to it but yet is still quite clear when held up to a light. This fogginess is from lots of small gas bubbles that appear to be mostly arranged in layers. The color of the piece is very pale yellow on one end grading to the more typical medium yellow on the other end. The exterior is a nice smooth rounded wind and sand sculpted surface with the exception of one small (10mm x 8mm) more recent fracture on one end. Nothing exceptional but likely priced below replacement cost these days (I am told that no more is being recovered. The area is “off limits” and is also supposedly a military bomb range these days).
46.0 gram individual as found – 55mm x 30mm x 27mm - $70

NWA (6950): Lunar meteorite (gabbro). Found June 2011. Tkw = 1649 grams.
Here is a rectangular part slice. It has a natural exterior along one of its longer edges and cut edges for the remaining three. This piece is quite a bit thicker than those I offered (at a higher price per gram) some months ago. This makes this piece a great specimen for those that want to let people touch/ handle the Moon (thin pieces of lunar gabbro tend to be a bit fragile). The best part of this specimen (aside from its really cheap per gram price) is that it has lots of fine black shock veins crisscrossing its surface (few of my pieces showed this).
17.51 gram part slice – 45mm x 31mm x 4mm - $4500

NWA (7611): Lunar meteorite (mingled breccia). Found May 2012. Tkw = 916 grams.
Here is a piece of a lunar meteorite I have not directly had before, at least by NWA number anyway. However it does look identical (and the Meteoritical Bulletin indicates they are likely paired) to the NWA (8277) I offered recently. Regardless, this is a really nice, large complete slice. Like the NWA (8277), this looks much like a typical anorthositic breccia (light and dark angular to rounded clasts in a darker gray matrix) but it is really composed mostly of basalt though it does indeed contain some anorthositic parts, hence the “mingled” (Mare basalt and Anorthositic highlands) breccia. One side of this has been sanded smooth and is a bit lighter in color. The other side shows fine saw marks (and some thickness change – who ever made that particular cut had difficulty with it) but is much darker on the background and is actually more interesting to look at.
13.73 gram complete slice – 57mm x 53mm x 2mm - $5000

NWA (7466): HED achondrite (eucrite, monomict). Purchased May 2012. Tkw = 1216 grams.
This is a nice complete slice that fusion crust (though somewhat wind-polished) around the entire edge. The interior is bright and fresh. There are lots of fine greenish gray and black mineral grains in a snow- white matrix. Research work showed that this meteorite is a breccia of one type rock (hence the “monomict in its classification) which is medium-grained baslaltic material. Nice piece and priced at about half the price that was originally on the plastic display box this thing is in ($239).
7.99 gram complete slice – 38mm x 36mm x 2mm - $120

NWA (8234): Stony-iron (mesosiderite) – C2. Found 2013. Tkw = 905 grams.
I didn’t think much of this one at first as it had a bit of rusting and some fine cracking on it when it was brought to me in Tucson (the thing was in Ohio and seems to have never been coated). After some minor work hand polishing the thing with super fine sand paper and steel wool, it looks like a mesosiderite should (lots of metal including one 8mm diameter nodule and silicates that range from fine-grained to cm plus clasts). I ran it through some alcohol and solar drying (on the dash of a car on one of the above 80 days we had at the show) and spray coated it. This is a complete slice and the smooth, rounded shape of the edge indicates that this probably has not been on the ground long (there appears to even be some fusion crust yet showing). I got a little more excited about the piece when I researched the thing a little further. I don’t fully understand the new additional “subtypes” in the mesosiderites these days (there seem to be A B and C groups with textural types 1 2 and 3). Regardless, this seems to be one of the really rare ones. It seems that a total of only 5 mesosiderites (including this one) have been classified as C2 (and only a total of 12 as group C overall). Probably should be stored in dry conditions (as any metal-rich meteorite should) but a nice and rare piece none the less.
56.3 gram complete slice – 85mm x 67mm x 3mm - $500

NWA (8277): Lunar meteorite (mingled breccia). Found 2013. Tkw = 773 grams.
Here is a nice super thin slightly wedged slice in a neat little display box (black plastic, glass front and its own built in prop stand). Like the NWA (7611) one side of this is polished and the other still shows fine saw marks (you really have to look to see them on this one). Like the above piece, the unpolished side has a darker background and is, frankly, more interesting (so this is the side I have showing at the moment but it can easily be changed). I can’t explain why these two meteorites are this way. Pretty much everything else I work with comes off the saw with its lightest color and usually its clearest textural differences showing in unaided eye view if not under magnification. Sanding usually quickly darkens the stone and the clarity of the texture starts going away (though it does come back, all be it darker, if you can or are willing to take the polish to a high diamond finish). Anyway, this piece does have the classic lighter clasts in a darker matrix moon rock look. This is a .44g slice that comes with a .1g smaller piece that broke off before I got the thing.
.44g+ slice – 18mm x 16mm x 1mm - $180