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Bastnäsite

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PDM665649

Bastnäsite

Description Tabs

Description
Locality: 
Buhinda, Musongati, Rutana Province, Burundi
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 2.8 × 3 cm
Largest Crystal: 
3.00cm
Description

Polycrystalline aggregate of brown lustrous bastnäsite from the Karonge in Burundi, a very uncommon locality. The main crystal is 30 mm in length. Acquired in 1977. Ex. Walter De Keersmaecker.

Mineral Data
What's on the rock

Bastnäsite

Synonym Of: 

Bastnäsite-(Ce)

Formula: 
(Ce,La)(CO3)F
Strunz: 
5.BD.20a
Hardness: 
4.0 - 4.5

Bastnäsite-(La)

Formula: 
(La,Ce)(CO3)F
Strunz: 
5.BD.20a
Hardness: 
4.0 - 5.0

Bastnäsite-(Nd)

Formula: 
Nd(CO3)F
Strunz: 
5.BD.20a
Hardness: 
4.0 - 4.5

Bastnäsite-(Y)

Formula: 
(Y,Ce)(CO3)F
Strunz: 
5.BD.20a
Hardness: 
4.0 - 4.5

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