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Phenakite
Phenakite is a popular mineral composed of beryllium orthosilicate. [1]
Phenakite: Quick Facts and Characteristics
Some quick facts for Phenakite:- Transparency: Phenakite can be opaque, translucent or transparent.
- Crystallography: In terms of crystallography, phenakite can be hexagonal or trigonal.
- Luster: In terms of luster, phenakite is vitreous (glassy).
- Streak: Phenakite streaks colorless.
- Hardness: Phenakite's hardness ranges from 7.5 to 8 on the Moh's scale.
- Specific Gravity: Phenakite's specific gravity ranges from 2.93 to 3.
Phenakite: Background and Summary
Phenakite is a rare and highly sought-after mineral that is composed of beryllium, aluminum, and silicon. It is a colorless, transparent crystal that can be found in various locations around the world, including Russia, Brazil, Madagascar, and Zimbabwe. Phenakite is a member of the cyclosilicate mineral group and is known for its high clarity and brilliance, which makes it a popular gemstone among collectors and jewelry makers.The easiest way to identify phenakite is by its crystal structure, which is typically hexagonal or trigonal. It has a hardness of 7.5-8 on the Mohs scale, which is similar to that of quartz. Phenakite also has a high refractive index, which means that it can bend light more than other minerals, giving it a unique and striking appearance.
Phenakite has several uses, including as a gemstone and in scientific research. As a gemstone, it is highly valued for its clarity and brilliance, and is often cut into faceted shapes for use in jewelry. In scientific research, phenakite is used as a source of beryllium, which is a rare and valuable element that is used in nuclear reactors, aerospace applications, and other high-tech industries.
Phenakite: Table of Properties
| Attribute | Phenakite (src) |
|---|---|
| Transparency | transparent, translucent, opaque |
| Chemical Formula | Be2SiO4 |
| Chemical Composition | beryllium orthosilicate |
| Specific Gravity | 2.93, 3 |
| Hardness | 7.5, 8 |
| Streak | colorless |
| Crystallography | hexagonal, trigonal |
| Refractive Index | 1.654, 1.76 |
| Hydrous | No |
| Colors | common: red, yellow sometimes: pink, brown less common: gray, white, colorless |
| Category | nesosilicate |
| Birefringence | δ = 0.017 |
| Fracture | 1: 1 |
Phenakite: FAQ
Q: Is phenakite a rare mineral?A: Yes, phenakite is a rare mineral that is only found in a few locations around the world.
Q: What is the value of phenakite?
A: The value of phenakite varies depending on its clarity, size, and other factors. However, it is generally considered to be a valuable gemstone.
Q: Can phenakite be used in jewelry?
A: Yes, phenakite is often used in jewelry due to its high clarity and brilliance.
Q: Is phenakite radioactive?
A: No, phenakite is not radioactive.
Sources
- "Phenakite." Mindat.org. https://www.mindat.org/min-3174.html- "Phenakite." Gemological Institute of America. https://www.gia.edu/phenakite
- Phenakite: https://en.wikipedia.org/wiki/Phenakite
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