Image: Black-band ironstone (aka)

Description: This image shows a 2.1 billion year old rock containing black-banded ironstone. The rock weighs about 8.5 tons, and is approximately two meters high, three meters wide, and one meter thick. It was found in North America and belongs to the National Museum of Mineralogy and Geology, Dresden, Germany. The rock is located at +51°2'34.84" +13°45'26.67".
Title: Black-band ironstone (aka)
Credit: Own work
Author: André Karwath aka Aka
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