कोशिश गोल्ड - मुक्त
Is Earth Leaking from the Middle?
Rock&Gem Magazine
|September 2025
Traditional wisdom holds that material contained within Earth's core is somewhat fixed and stays deep down.
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Magma may form in the lower depths of the mantle and ride plumes to the surface to erupt as volcanoes or mid-ocean rifts, but the dense metallic core stays out of it. Well, maybe not.
यह कहानी Rock&Gem Magazine के September 2025 संस्करण से ली गई है।
हजारों चुनिंदा प्रीमियम कहानियों और 9,500 से अधिक पत्रिकाओं और समाचार पत्रों तक पहुंचने के लिए मैगज़्टर गोल्ड की सदस्यता लें।
क्या आप पहले से ही ग्राहक हैं? साइन इन करें
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Rock&Gem Magazine
DUNCAN POPPY JASPER
Every year comes the chance to find something new, whether in the field or the marketplace. This year, a new type of jasper appeared in the rockhound community on Facebook, catching quick attention for its bright variety of colored poppy jasper.
2 mins
September 2025
Rock&Gem Magazine
PSEUDOFOSSILS - "Fossils" That Aren't!
Several mineral growths look for all the world like fossils.
4 mins
September 2025
Rock&Gem Magazine
MOSAIC
In January 2025, a group of designers was challenged to create or modify a design for iolite that would show off the gem's pleochroism and that would work for the material's lower refractive index and minimal dispersion. Jeffrey Hill's “Mosaic” is a straightforward design where rough can be oriented to showcase the greys and blues or oriented to show a mixing of the colors.
2 mins
September 2025
Rock&Gem Magazine
SALAR DE UYUNI
While relatively few people have ever visited the immense salt flat known as Salar de Uyuni (sa-LAR day ooh-yooni), millions have seen it on the big screen. In the 2017 movie Star Wars: The Last Jedi, Salar de Uyuni was the filming location for the fictional Crait, a small planet where white salt covers bright-red, mineral-rich soil, and the Resistance fought the First Order in a climactic battle.
3 mins
September 2025
Rock&Gem Magazine
Meramec Station Road Calcite
Finding calcite in Limestone Cliffs near St. Louis
7 mins
September 2025
Rock&Gem Magazine
SPACE ROCKS
Exploring the Asteroid Belt's Ancient Rocks
5 mins
September 2025
Rock&Gem Magazine
Subduction Is Alive & Well on Venus
Venus is often called Earth's Evil Twin.
1 min
September 2025
Rock&Gem Magazine
Sri Lanka: The Gem Island
Ceylon, Sapphires & Serendipity
6 mins
September 2025
Rock&Gem Magazine
Deinosuchus
An alligator no more!
1 min
September 2025
Rock&Gem Magazine
ROCK & GEM FIELD GUIDE: Oregon Sunstone
Sunstone is the transparent, gem-quality variety of the mineral labradorite, a calcium-rich feldspar in the plagioclase series.
1 mins
September 2025
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