Difference between revisions of "Bastnasite"
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(New page: '''Bastnasite''' (sometimes spelled ''bastnaesite'') is one of the more common rare earth carbonate minerals. It is an important ore for the production of cerium, lanthanum and [[...) |
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Although originally named for the first location it was found, Bastnas Mine, Riddarhyttan, Vastmanland, [[Sweden]], subsequent deposits have been located in [[Norway]], [[Malawi]], [[Mongolia]], [[Canada]] and [[California]]. | Although originally named for the first location it was found, Bastnas Mine, Riddarhyttan, Vastmanland, [[Sweden]], subsequent deposits have been located in [[Norway]], [[Malawi]], [[Mongolia]], [[Canada]] and [[California]]. | ||
| − | ==Mineral Information== | + | ==Mineral Information== |
| + | |||
* Empirical Formula: Ce(CO<sub>3</sub>)F | * Empirical Formula: Ce(CO<sub>3</sub>)F | ||
* Color is pale white, tan, gray, brown, yellow and pink. | * Color is pale white, tan, gray, brown, yellow and pink. | ||
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* Fracture is uneven. | * Fracture is uneven. | ||
* Hardness is 4 to 4.5. | * Hardness is 4 to 4.5. | ||
| − | * Specific Gravity is 4.7 to 5.0 (well above average) | + | * Specific Gravity is 4.7 to 5.0 (well above average) <ref>http://www.galleries.com/minerals/carbonat/bastnasi/bastnasi.htm</ref> |
==External Links== | ==External Links== | ||
Revision as of 23:07, May 10, 2008
Bastnasite (sometimes spelled bastnaesite) is one of the more common rare earth carbonate minerals. It is an important ore for the production of cerium, lanthanum and yttrium.
Although originally named for the first location it was found, Bastnas Mine, Riddarhyttan, Vastmanland, Sweden, subsequent deposits have been located in Norway, Malawi, Mongolia, Canada and California.
Mineral Information
- Empirical Formula: Ce(CO3)F
- Color is pale white, tan, gray, brown, yellow and pink.
- Luster is pearly, vitreous, greasy to dull.
- Transparency: Crystals are translucent to opaque.
- Crystal System is hexagonal.
- Cleavage is distinct in one direction (basal) and poor in three directions (prismatic).
- Fracture is uneven.
- Hardness is 4 to 4.5.
- Specific Gravity is 4.7 to 5.0 (well above average) [1]
External Links
Webmineral's Page on Bastnasite