Many other copper deposits are known for quantities of colorful azurite, malachite, cuprite, native copper. How many colorful azurite and malachite specimens have you heard about from Butte? For the most part, Butte species, though secondary, are gray, gray-black, or black. The majority of Butte’s minerals are sulfides, not carbonates, arsenates, or oxides. The deposit was composed mainly of deeply seated veins of covellite, enargite, chalcopyrite, chalcocite, bornite, and rare copper species like digenite, colusite, and djurleite.
Esta historia es de la edición October 2020 de Rock&Gem Magazine.
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Esta historia es de la edición October 2020 de Rock&Gem Magazine.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 8500 revistas y periódicos.
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MORGAN HILL POPPY JASPER
In California, there are very few places to collect semi-precious stones. Many locations from the past have been either exhausted of the material or the land has been developed.
THE ACORN
The briolette gemstone has the same design attributes of a regular gemstone, however, the pavilion is elongated and the crown is usually domed. This is perfect for an elegant pendant, earrings or a pendulum.
HOW TO PUT A PROTECTIVE CAP ON A CAB
To protect a specimen cab, often a cap is needed. In my case, I had a slab with the because of the color of the background and the pattern. This background had a more silicified consistency than most sandstones. It had no graininess like most sandstone, so I'm inclined to compare it to a jasper. The pattern was typical of a dendrite.
The Resilient Revival of Anne Brontë & Her Stones
For the first time, the Anne Brontë rock collection underwent complete description and identification, and along with Professor Hazel Hutchison of Leeds University and Dr. Enrique Lozano Diz at ELODIZ (a company specializing in spectroscopy analysis), an analysis of that collaboration, Anne Brontë and Geology: A Study of her Collection of Stones, was published in April 2022 in Volume 47, Issue 2 of the peer-reviewed journal, Brontë Studies & Gazette.\"
Amazing Women with Rock-Solid Careers
Explorers, Geologists, Educators & Jewelry Makers...
The Case of the Bleeding Glacier
It's a gory sight called Blood Falls. Ever since British geologist Thomas Griffith Taylor first noted it in 1911, it has been a mystery.
Asteroid Samples Are Said to Hold Invaluable Secrets
If Only Scientists Can Pop the Lid!
Paleontologists Embrace a New Method for Seeing Fossils within Rock
Fossil bone can be delicate. Attempts to remove it from a hard rock matrix by picking and scratching or etching with acids can be time-consuming and/or may end up obliterating that which you hope to study.
Need a Map of the Ocean Floor?
Call in the Seals!
A Step Closer to Hydrogen, the "Climate-Friendly Fuel"
As I reported last June, the world is racing to find sustainably renewable, nonpolluting sources of energy to replace our carbon-based reserves of coal, oil and gas.
