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Chelated Minerals: The Complete Guide

2009年1月1日

utzy.com

0:09

Color-changing Alexandrite is nature’s magic trick, and one of the birthstones for June. Alexandrite is a very rare color-change variety of the mineral chrysoberyl. Originally discovered in Russia’s Ural Mountains in the 1830s, it’s now found in Sri Lanka, East Africa, and Brazil, but fine material with a strong color change is exceptionally rare and valuable. Alexandrite is named after Czar Alexander II of Russia, and has a bluish-green color in daylight and fluorescent light, but shifts to a r

已浏览 704 次2023年6月8日

FacebookFaith Jewelers

1:00

Metallic Chalcopyrite on Calcite

已浏览 4.5万次2020年1月19日

FacebookThe Arkenstone Gallery of Fine Minerals

1:27

⚒️ Diamond Mountain Mining: Rockin' on the Road ⚒️ "There's GOLD in them there hills!!!" We spent our second day in the Silverton, Colorado mining district exploring an abandoned gold mine! ✨️ . The Mayflower Mill was the single longest running mill in the history of the San Juan Mountains. In its 61 year milling career from 1930 to 1991, the total amount of rock milled to extract precious metals is estimated at 9,700,500 tons (!!!) One of the coolest sights of the day was seeing ore-carts suspe

已浏览 922 次2023年10月29日

FacebookDiamond Mountain Mining, LTD

0:54

Sodalite var. Hackmanite - Afghanistan

已浏览 575 次2021年1月1日

FacebookThe Arkenstone Gallery of Fine Minerals

$Ah, the persistent calcite vs. quartz debate! So this isn’t a definitive test to determine just ANY clear mineral; there are plenty of clear minerals that would perform differently on this one simple test. But, if someone tells you “hey, this is EITHER a quartz or a calcite, can you tell which?” this is one indicator test. If you want one quick visual test that would help, gemmy calcite is so doubly refractive that it will often show doubled images, but you might have to test it at a few differe$

0:19

Ah, the persistent calcite vs. quartz debate! So this isn’t a definitive test to determine just ANY clear mineral; there are plenty of clear minerals that would perform differently on this one simple test. But, if someone tells you “hey, this is EITHER a quartz or a calcite, can you tell which?” this is one indicator test. If you want one quick visual test that would help, gemmy calcite is so doubly refractive that it will often show doubled images, but you might have to test it at a few differe

已浏览 3133 次2023年11月10日

FacebookThe Arkenstone Gallery of Fine Minerals