Collectors of all ages have always been interested in rocks and the minerals that make them up. They come in countless shapes, sizes and colors. There are three main types of rocks: sedimentary, ...
ZME Science on MSN
Thundereggs Are Nature’s “Loot Boxes” and Can Hold Hold Geological Masterpieces Inside
Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...
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