On one side this may look like just a ordinary clam shell but when you flip it over it contains beautiful golden calcite crystals. The crystals formed when the clam died and a cavity formed allowing the crystals to develop. Took over two million years to do this. Found on the east coast of Florida in Brevard County.
capturing_the_cosmos
Penitentes Rows of sparkling snow pinnacles range beside a high Andean pass between Chile and Argentina. Silent and eerie, the Agua Negra Pass high in the remote Andes links La Serena in Chile with San Juan Province in Argentina. At an altitude of 15,633ft (4765m) it is one of the world’s highest motoring passes—a tough 12-hour drive with a high risk of plunging into a ravine or of being swept away by a landslide. The sky is dark in the thin air, and the shadowy ranks of the Penitentes—pinnacles of frozen snow 6-20ft (1.8-6m) tall—lining the steep slopes like white hooded figures, add to the spine-chilling atmosphere. In 1835, the British naturalist Charles Darwin thought that the pinnacles were formed by wind action. More recent studies show that these ice pinnacles form when ice is below the freezing temperature of water, but being bombarded with sunlight and undergoing sublimation. Tiny depressions begin forming as the ice sublimates, and sunlight is focused into these depressions, causing the ice to sublimate more rapidly at those spots. The end result is a field of spiky ice, that this photographer described as “hell to cross”. ~JM Image Credit: https://flic.kr/p/5W1xUZ More Info: Penitentes: http://bit.ly/1LUcEXv Video-Penitentes: http://bit.ly/1Fleb4K Betterton, M. D. (2000). Formation of structure in snowfields: Penitentes, suncups, and dirt cones. http://bit.ly/1KEd5b1 Sublimation: http://on.doi.gov/1HUN06X Luciano Roque Catalano. Book. “Snow Penitents” http://bit.ly/1FTnRr0
one of my top 10 favorite childhood memories was going to the garden store with my parents as a kid where they had one of these bad boys
*gently places a small clump of moss in your hand*
Fluorite - Schacht 78 Mine, Frohnau, Annaberg, Saxony, Germany
https://twitter.com/archeometrie/status/1170031822614474752?s=12
Prints available for sale at her Etsy Shop.
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