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 ...
Nature

Agate and Chalcedony Geochemistry in Volcanic Rocks

The geochemistry of agate and chalcedony in volcanic rocks represents an intricate record of silica precipitation and crystallisation processes occurring under variable thermal and chemical conditions ...
The Free Press Journal

Chalcedony: Symbol of tranquillity and expression

Chalcedony includes minerals like agate, onyx, jasper, and heliotrope. Chalcedony has a waxy lustre and is usually translucent to opaque. Key characteristics of Chalcedony include its hardness (around ...
Smithsonian Magazine

Unique Agates on a Panamanian Island Reveal Submarine Volcanic Activity

Giant agates found in an island on Panama’s Pacific coast prompted a study on how the Isthmus evolved and became a bridge between two continents Vanessa Crooks Sea conditions in the Pearl Islands can ...
insider.si.edu

Little Colorado River Chert/Quartzite, Petrified Wood, Chalcedony, Agate

L-14 (Little Colorado River Chert/Quartzite/Petrified Wood/Chalcedony/Agate): Not direct collection from outcrop. Provenience includes samples from gravel deposits. Unknown collection procedure.
The New York Times

Some Agates Display Scenes Painted by Nature

Mineral deposits can create markings that look like forests or mountains, and experts say each stone is distinctive. By Jill Newman When Tarun Adlakha displays a dendritic agate, with its finely ...
insider.si.edu

Little Colorado River Gravel Chert, Petrified Wood, Agate, Chalcedony

L-23 (Little Colorado River Gravel Chert, Petrified Wood, Agate, Chalcedony): Not a direct collection from outcrop; Provenience includes samples from gravel deposits; Collection includes raw material, ...