4 thoughts on “Is fluorite radioactivity? Or is it harmful to the human body?”
Alison
Yingshi
Western -based encyclopedia, free encyclopedia
jump to:, search
Fluorite is a mineral, and its main component is calcium fluoride (CAF_2), which contains more impurities. CA is often replaced by rare earth elements such as Y and CE. , HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
The information on the first floor is very embarrassed. Flock is a common ore. The main chemical ingredients are CAF. Except for China, many areas in the world have output. Speaking of texture, for ordinary people, it is similar to granite, marble, and limestone. In the ceramic industry, it is often used in glazes to reduce mature temperature and use it for mineralizers when color synthesis. The colorful color of the original ore is also pretty good. I often use this stuff. The price is at least 200-300 yuan and 1 ton. It is not precious.
The main component of fluorite is calcium fluoride, which are relatively simple elements. There are no radioactivity under general conditions and no harm to the human body! Intersection China is one of the most fluorite minerals in the world, and it is mainly produced in Zhejiang, Hunan, Fujian and other places. Other major producing areas in the world are South Africa, Mexico, Mongolia, Russia, the United States, Thailand, Spain and other places. In the leaps of science and technology, fluorite is worth hundreds of times: the rocket promotes fuel, laser, atomic energy manufacturing industry, and medical blood, artificial heart valve, and bones are inseparable from fluorite. The on the market that I did n’t hear about selling this, is it a precious stone, I think it should be, it should be useful, but it should also distinguish between the general gemstone.
Yingshi
Western -based encyclopedia, free encyclopedia
jump to:, search
Fluorite is a mineral, and its main component is calcium fluoride (CAF_2), which contains more impurities. CA is often replaced by rare earth elements such as Y and CE. , HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties
n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
The information on the first floor is very embarrassed.
Flock is a common ore. The main chemical ingredients are CAF. Except for China, many areas in the world have output. Speaking of texture, for ordinary people, it is similar to granite, marble, and limestone. In the ceramic industry, it is often used in glazes to reduce mature temperature and use it for mineralizers when color synthesis. The colorful color of the original ore is also pretty good. I often use this stuff. The price is at least 200-300 yuan and 1 ton. It is not precious.
CAF is not radioactive. But it does not rule out the possibility of mixed radioactive impurities.
The main component of fluorite is calcium fluoride, which are relatively simple elements. There are no radioactivity under general conditions and no harm to the human body! Intersection China is one of the most fluorite minerals in the world, and it is mainly produced in Zhejiang, Hunan, Fujian and other places. Other major producing areas in the world are South Africa, Mexico, Mongolia, Russia, the United States, Thailand, Spain and other places.
In the leaps of science and technology, fluorite is worth hundreds of times: the rocket promotes fuel, laser, atomic energy manufacturing industry, and medical blood, artificial heart valve, and bones are inseparable from fluorite.
The on the market that I did n’t hear about selling this, is it a precious stone, I think it should be, it should be useful, but it should also distinguish between the general gemstone.