Kenneth Regelman
11/23/2022 11:43:43 PM |
Very interesting !!! |
Anne Black
11/21/2022 4:13:45 PM |
That's an idea John. You might want to suggest it to the Met.Society. ;-) |
John Divelbiss
11/21/2022 3:33:14 PM |
So a Howardite is either 10% or more orthopyroxene in a Eucrite on one end of the spectrum, and 10% or more plagioclase in a Diogenite on the other end. How about we use Howardcrite versus a Howardgenite? up to 50% of one or the other to define... :/ |
Anne Black
11/21/2022 1:43:45 PM |
Yes John, the way it was explained to me many years ago is that you have Diogenite on one side, Eucrite on the other, and in between Howardite, a mixture of the two. And to quote The Expert, Sir Richard Norton, "Howardite: a brecciated achondrite composed of eucrite and diogenite fragments". |
John Divelbiss
11/21/2022 12:20:52 PM |
really nice material... a Polymict Brecciated Eucrite or a Polymict Brecciated Diogenite? How in the world did the idea of a Howardite come about? A Howardite to me has always been about marketing$$ a Eucrite breccia. If a mixed regolith, then just say that. My two cents. |
Twink Monrad
11/21/2022 6:44:36 AM |
thank you for the great photos |
Graham Ensor
11/21/2022 6:34:21 AM |
Nice...looks like some melt flow involved in that slice. |
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