Unclassified NWA

[rockpassion]

I have bought this rock years ago from a morrocan dealer who buys meteorites from the bedouine in morroco and sells them abroad. It has a green interiour. Could this be a mars meteorite. paid 750 euro for it. and it weighs 496 grams.

 

[Terry Soloman]

Martian Meteorite — NWA 16788 | Natural History, Including The

<p>NWA 16788 — The Largest Piece of Mars on Earth</p><p><em>Martian – shergottite (olivine microgabbro)</em></p><p><em>Agadez Region (Kefkaf), Niger</em></p><p><br></p><p>374.7 x 279.4 x 152.4 mm (14¾ x 11 x 6 inches). 24.67 kilograms (54.388 lb).</p>

www.sothebys.com

 

[rockpassion]

Martian Meteorite — NWA 16788 | Natural History, Including The

<p>NWA 16788 — The Largest Piece of Mars on Earth</p><p><em>Martian – shergottite (olivine microgabbro)</em></p><p><em>Agadez Region (Kefkaf), Niger</em></p><p><br></p><p>374.7 x 279.4 x 152.4 mm (14¾ x 11 x 6 inches). 24.67 kilograms (54.388 lb).</p>

www.sothebys.com

COOL but what is your opinion on my stone?

 

[Red-Coat]

I see no evidence of chondrules, not even melted ones, so I would assume it's a stony achondrite. The general appearance is not particularly characteristic of Martian material (nor Lunar). It is however broadly consistent with a Howardite or Eucrite.

 

[rockpassion]

I see no evidence of chondrules, not even melted ones, so I would assume it's a stony achondrite. The general appearance is not particularly characteristic of Martian material (nor Lunar). It is however broadly consistent with a Howardite or Eucrite.

thanks, is there something like a green eucrite. because the rock has a green interiour.

 

[rockpassion]

this one is very similair: https://www.fossilera.com/meteorites/3-90-martian-shergottite-meteorite-33-93-g-slice-new-find

 

[Red-Coat]

thanks, is there something like a green eucrite. because the rock has a green interiour.

Meteorites in the HED group (Howardites, Eucrites, Diogenites) typically all contain pyroxenes and some olivine, both with a green colouration. Most usually this is apparent as green crystalline material within a darker or lighter matrix, although the matrix itself can have a greenish tinge. Only Diogenites generally exhibit an overall dark green colour.

It would help if you could start out giving all the information you have when asking the kinds of questions you've been posing. Greenness isn't readily apparent in your pictures.

 

[rockpassion]

Meteorites in the HED group (Howardites, Eucrites, Diogenites) typically all contain pyroxenes and some olivine, both with a green colouration. Most usually this is apparent as green crystalline material within a darker or lighter matrix, although the matrix itself can have a greenish tinge. Only Diogenites generally exhibit an overall dark green colour.

It would help if you could start out giving all the information you have when asking the kinds of questions you've been posing. Greenness isn't readily apparent in your pictures.

have no other info but what i already mention in the first post and although it might not look like it on the photo's the stone has defently a green interiour

 

[Red-Coat]

have no other info but what i already mention in the first post and although it might not look like it on the photo's the stone has defently a green interiour

OK, but you didn't say it was green and, if the pictures don't show that, how might I know? Every bit of information helps!

 

[rockpassion]

OK, but you didn't say it was green and, if the pictures don't show that, how might I know? Every bit of information helps!

oke my bad, have added it to the first post.

 

[ConceptualizedNetherlandr]

Photos of wet rock. What does it look like dry?

' I met you on somebody's island
You thought you had known me before
I brought you a crate of papaya
They waited all night by your door
You probably wouldn't remember
I probably couldn't forget
Jungle love in the surf in the pouring rain
Everything's better when wet '

 

[rockpassion]

Photos of wet rock. What does it look like dry?

' I met you on somebody's island
You thought you had known me before
I brought you a crate of papaya
They waited all night by your door
You probably wouldn't remember
I probably couldn't forget
Jungle love in the surf in the pouring rain
Everything's better when wet '

the photo of the cut surface are whet yes, otherwise you could not the the texture. but of the crust dry. here is what the cut surface looks dry.

 

[rockpassion]

Please can anyone say to me if this is a meteorite or not. And i know you can't tell from a photo but i challenge that. Please try.

 

[Red-Coat]

Please can anyone say to me if this is a meteorite or not. And i know you can't tell from a photo but i challenge that. Please try.

The answer is that it could be, in my opinion. I have already said what type it might be, if it is a meteorite, and it's clearly not a chondrite. The fusion crust looks to be consistent with (but not conclusively diagnostic for) a NWA find. The interior is potentially consistent with an igneous terrestrial rock as well as a meteorite. Only expert testing by a laboratory with appropriate expertise will tell you for certain... irrespective of how many more pictures you post.

How much faith and trust do you put into what the seller told you?

 

[rockpassion]

The answer is that it could be, in my opinion. I have already said what type it might be, if it is a meteorite, and it's clearly not a chondrite. The fusion crust looks to be consistent with (but not conclusively diagnostic for) a NWA find. The interior is potentially consistent with an igneous terrestrial rock as well as a meteorite. Only expert testing by a laboratory with appropriate expertise will tell you for certain... irrespective of how many more pictures you post.

How much faith and trust do you put into what the seller told you?

he sells meteorites world wide to all collectors.