| Country of Origin | United States |
|---|---|
| Modified Item | No |
Check the listing for details. Moqui Marbles • Iron Concretions • One Pair, About 1.50" diameter. Condition: Used, Made in United States. Listed at 10.00 USD. These Moqui marbles, also known as sandstone iron concretions in geology textbooks, are from an estate collection we recently acquired. They were also discovered in York crater on Mars by the Opportunity rover.These Moqui marbles, also known as sandstone iron concretions in geology textbooks, are from an estate collection we recently acquired. They were also discovered in York crater on Mars by the Opportunity rover.
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