Meteorite or not?

[lukebl]

Just for fun, here's a little puzzle for you.

One of these rocks in my posession is almost definitely a meteorite, and the other definitely is not. Anyone care to tell which is which? Answer later.

[melsmore]

A is meteorite ?

[dweller25]

I guess that A is a meteorite - what have I won  - I like Jaffa cakes

[nightfisher]

No idea but would love to know as i would like to find them............i will guess B

[VikN46]

B as A looks like a lump of coal, but what do I know!

[Mukv]

B is meteorite because A has sharp angle on some edges and aerodynamically would drop fat end first color change at mid point might not  be indicative of heat or friction heating on one face it could be change of strata. "A" looks rounded on all visible faces with a surface possible pock marked from heat also both react to a magnet placed near my screen ( rats forgot CRT screen get messed by magnets).

mars bar or galaxy works for me

I could be wrong !

Andy

[John]

B looks to have a slight rollover lip on the underside although it's not entirely clear from the photo.

The outside of A looks just a little too melted, bubbled and crusty to me.

I'll go for B. There are a number of falls that it could be. Gao-Guenie could be one or the more recent Bassiknou fall could be another that produced specimens like that.

A cut and polished face would help identification a lot !

[RichM63]

A looks like dung.

B looks like any of the millions of granite pebbles I have on the beach.

OK, A ?

[triton1]

B looks like a pebble so I,ll go A.I like mint aero.

[michael.h.f.wilkinson]

A would be my first guess

[kev]

A for me.

Sent from my iPhone using Tapatalk

[rowan46]

A would be my first guess. B would be my second guess

[Ganymede12]

B looks like it was transported by water so I'm guessing A.

[trazor]

Just for fun, here's a little puzzle for you.

almost definitely a meteorite,

Hmmmm, my guess is neither of them......

[lukebl]

Here they are side-by-side. Well, I never said they were the same size!  

A is the meteorite, a tiny Chondrite fragment of the great Chelyabinsk meteorite of 2013 which I bought off a reputable dealer. I say it's almost definitely a meteorite, because how am I to know it really is genuine? I trust the seller, though. Well, I paid enough for it!

B is a piece of river-washed basalt I picked up near Geysir in Iceland a few years ago.

No Jaffa cakes, minty Aeros or anything for correct answers. Sorry.

[John]

Well the scale certainly fooled me

Nice brain teaser though Luke.

There were fragments of Chelyabinsk for sale at the SW Astro Fair last month. The dealer was David Bryant of "Spacerocks".

Nice to have a piece of it

[lukebl]

....There were fragments of Chelyabinsk for sale at the SW Astro Fair last month. The dealer was David Bryant of "Spacerocks".....

Interesting. I bought it off David Bryant!

[John]

Interesting. I bought it off David Bryant!

He is IMCA (International Meteorite Collectors Association) registered and very reputable

[michael.h.f.wilkinson]

I thought the edges on the object (which caused andyukv to discount it) might be due to fragmentation in the air. As the Chelyabinsk meteorite did have an air burst it is certainly possible

[Knight of Clear Skies]

Nice work hiding the scale.

I thought A because B looks like it has been in water. Then I started reading the other answers and doubted my reasoning.