Formula Bastnäsite Ce: (Ce,La)[CO₃]F
Mineral class: carbonates
Crystal system: hexagonal
Mohs scale: 4 - 4.5
Density /g/cm³: 4.9 - 5.2
Cleavage: different
Colors: colorless, yellowish, reddish-brown
Luster: vitreous - greasy
Fluorescence: -
Pleochroism: weak
Largest Bastnäsite: ?
Deposits: worldwide
1st Description: Ce: 1951; La: 1961; Y: 1970

Bastnäsite Mineral

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Bastnäsite

Weight: 1.26 ct

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Bastnäsite Mineral

Origin: Khyber Region / Pakistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Bastnäsite

Weight: 11,62 ct

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.americanthai.com, Scott Davies.

Bastnäsite Mineral

Size: 1.5 x 1.5 x 0.3 cm

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Bastnäsite

Weight: 5.09 ct

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.irocks.com, Dr. Robert Lavinsky.

Bastnäsite

Weight: 0.74 ct

Origin: Zagi Mt. / Pakistan

Photo by kind permission of © http://rock-logic.tripod.com, Alexandra Woodmansee.

Bastnäsite color change

Weight: 2.09 ct

Origin: Zagi Mountain / Pakistan

Photo by kind permission of © www.americanthai.com, Scott Davies.