The world's gem-quality fluorite is mainly distributed in the United States, Colombia, Canada, the United Kingdom, Namibia, as well as Austria, Switzerland, Italy, Germany, the Czech Republic and Slovakia, the former Soviet Union, Australia, South Africa and other places. For example, Illinois, Kentucky, etc. in the United States produce purple, violet, blue, yellow, brown and other colorless transparent fluorite, New Hampshire and New York produce fresh green fluorite, Colombian green color stone. Colorless transparent fluorite crystals from Ontario, Canada. British Cornwall produces white, blue, violet, reddish brown and other fluorite. Grandmother green fluorite from Namibia. Fluorite resources have been found in almost every province in China. The gem-quality fluorite is mainly distributed in Zhejiang, Anhui, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Qinghai and Xinjiang. Fluorite identification method The crystal structure of fluorite has a "cavity" and is easily filled with other ions, so in nature, colorless and transparent pure fluorite is extremely rare. This structural defect also makes fluorite the most colorful stone, because it contains iron, magnesium, copper and other ions, green, purple, yellow, blue, brown, orange, pink... fluorite can display almost any color. If you put these colors together, it will be more beautiful than the rainbow, so many people call fluorite as "rainbow gem". Fluorite can be color-changed, and heat treatment is more common in fluorite, which can turn dark blue to black fluorite into blue by heating. In general, such heat-treated fluorite is difficult to identify, and its color is stable in an environment of 300 ° C or less. During fluorite processing, plastic or resin is often filled, the main purpose of which is to heal surface cracks so that they do not crack when processed or worn. The identification of the filled fluorite mainly includes the following aspects: 1. Zoom in to check the gap. 2. Hot needle test for fusible resin and plastic. 3, UV fluorescence observation, filled plastic and resin can have characteristic fluorescence. 4. Irradiation treatment: Colorless fluorite can produce purple by irradiation. Irradiated fluorite is extremely unstable and will fade when exposed to light, so this treatment is not practical. Beige Color Grounding Flat Sheet Earth Sheet,Grounded Flat Sheets,Silver Flat Sheets,Conductive Flat Sheets Shandong EMF New Material Technology Co., Ltd , https://www.earthingsilver.com
Fluorite origin _ identification method