AllMineralsRock
Pyromorphite
Pyromorphite is a popular mineral composed of lead chlorophosphate. [1]
Pyromorphite: Quick Facts and Characteristics
Some quick facts for Pyromorphite:- Transparency: Pyromorphite is translucent.
- Crystallography: In terms of crystallography, pyromorphite is hexagonal.
- Luster: In terms of luster, pyromorphite can be greasy or resinous.
- Streak: Pyromorphite streaks white.
- Specific Gravity: Pyromorphite's specific gravity ranges from 6.9 to 7.1.
Pyromorphite: Background and Summary
Pyromorphite is a mineral that is commonly found in the oxidation zones of lead ore deposits. It can be identified by its bright green, yellow, or brown coloration, as well as its characteristic hexagonal crystals. Pyromorphite is a lead chlorophosphate, with the chemical formula Pb5(PO4)3Cl. It is a relatively rare mineral, but can be found in a variety of locations around the world, including the United States, Mexico, and Australia.Pyromorphite has several uses, both industrial and decorative. It is often used as a minor ore of lead, and can also be used in the production of lead-acid batteries. In addition, pyromorphite is sometimes used as a gemstone, due to its vibrant green coloration. It is also a popular mineral among collectors, due to its distinctive crystal formations.
Pyromorphite: Table of Properties
| Attribute | Pyromorphite (src) |
|---|---|
| Transparency | translucent |
| Chemical Formula | Pb5(PO4)3Cl |
| Chemical Composition | lead chlorophosphate |
| Specific Gravity | 6.9, 7.1 |
| Streak | white |
| Crystallography | hexagonal |
| Hydrous | No |
| Colors | common: green, yellow, brown, orange, white sometimes: gray, colorless less common: tan, red, multicolor |
| Category | phosphate |
| Birefringence | δ = 0.010 |
| Fracture | 1: 1 |
Pyromorphite: FAQ
Q: Is pyromorphite toxic?A: Yes, pyromorphite contains lead and should be handled with care. It is important to wash your hands thoroughly after handling pyromorphite, and to avoid inhaling or ingesting it.
Q: Can pyromorphite be used in jewelry?
A: Yes, pyromorphite can be used as a gemstone. However, due to its relatively low hardness (3.5-4 on the Mohs scale), it is not recommended for use in jewelry that will be subjected to daily wear and tear.
Q: Can pyromorphite be found in the United States?
A: Yes, pyromorphite has been found in several locations in the United States, including Arizona, New Mexico, and Colorado.
Sources
- "Pyromorphite." Mindat.org. https://www.mindat.org/min-3316.html- "Pyromorphite." Geology.com. https://geology.com/minerals/pyromorphite.shtml
- "Pyromorphite." Mineralogy Database. https://www.webmineral.com/data/Pyromorphite.shtml
- Pyromorphite: https://en.wikipedia.org/wiki/Pyromorphite
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