Bastnäsite

Bastnäsiet, Bastnaesit, Bastnaesita, Bastnäsita, Bastnaesite, Bastnasita, Bastnasite, Bastnazyt, Бастнезит, บาสต์เนไซต์, 氟碳鈰礦


Commonly known      rarer (so called collectors stones)      very rare (rarities)      relatively rare organic material


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
Refractive index: 1.717 - 1.722
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
Name: for the type locality at the Bastnäs mines / Riddarhyttan / Västmanland / Sweden
Weak radioactivity

Bastnäsite Mineral

Size: 3.3 x 2.9 x 1.3 cm

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com
Bastnäsite Mineral
Bastnäsite

Weight: 1.26 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com

Bastnäsite Mineral

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com
Bastnäsite Mineral
Bastnäsite

Size: 0.92 x 0.76 cm
Weight: 4.25 ct
Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.thegemtrader.com

Bastnäsite Mineral

Size: 1.5 x 1.5 x 0.3 cm

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com
Bastnäsite Mineral
Bastnäsite

Weight: 5.09 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com

Bastnäsite Mineral

Size: 0.93 x 0.52 x 0.36 cm

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.crystal-treasure.com
Bastnäsite Mineral
Bastnäsite

Weight: 11.62 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.americanthai.com

Bastnäsite

Weight: 0.86 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.gemfrance.com

Bastnäsite Mineral

Size: 1.3 x 0.4 x 0.4 cm

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.steveperrygems.com
Bastnäsite Mineral
Bastnäsite

Weight: 0.74 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.rocklogic.biz
Bastnäsite

Size: 0.7 x 0.4 x 0.2 cm
Weight: 1.14 ct
Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.rocklogic.biz

Bastnäsite

Size: 0.23 x 0.15 cm
Weight: 0.04 ct
Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.irocks.com

Bastnäsite color change

Weight: 2.09 ct

Origin: Zagi Mt. / Khyber Region / FATA / Pakistan

Photo by kind permission of © www.americanthai.com
Bastnäsite color change

Size: 0.87 x 0.65 x 0.46 cm
Weight: 2.86 ct
Origin: Afghanistan

Photo by kind permission of © www.bkkgemstones.com
Bastnäsite

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