Bastnasite 5.68 ct Rare Earth Mineral Exceptional quality Collector's Gem
Gema de coleccionista de Bastnasite natural de 5.685 ct ~ Mina Zagi
Este texto fue traducido automáticamente. ¿Mostrar original?

Información del artículo

Dimensiones (mm) 9 x 9 x 5.8milímetro
Peso (quilates) 5.685 quilates
  • Faceted
  • You Can Check our other Gemstones Collection at;



    Bastnasite is a rare earth carbonate mineral that belongs to the class of the rare earth fluorocarbonates. It was first discovered in Bastnäs mines, located in the Riddarhyttan area of Västmanland, Sweden, from which it derives its name.

    Physical Properties:

    Bastnasite has a chemical formula of (Ce,La,Nd)CO3F and has a hardness of 4.5-5 on the Mohs scale. It typically forms as prismatic or tabular crystals, but can also occur as massive or granular aggregates. It has a vitreous to resinous luster and can be transparent to translucent in appearance. Its color can range from yellow to brown, green, or reddish-brown, depending on the rare earth element composition.

    Formation and Occurrence:

    Bastnasite is primarily found in carbonatite and alkaline igneous rocks, where it forms as a result of hydrothermal alteration. It is also associated with pegmatite veins and has been found in sandstones, shales, and gneisses. Bastnasite is typically found in association with other rare earth minerals such as monazite, xenotime, and allanite. It is widely distributed around the world, with significant deposits found in China, the United States, Brazil, and India.

    Industrial Applications:

    Bastnasite is an important source of rare earth elements, which are crucial in the production of high-tech materials and devices. Rare earth elements are used in the production of magnets, catalysts, alloys, and phosphors, which are essential in a wide range of industries including electronics, telecommunications, defense, and renewable energy. Bastnasite is typically processed through a series of steps, including crushing, milling, and flotation, to extract the rare earth elements it contains.

    Environmental Concerns:

    The extraction and processing of rare earth elements from bastnasite and other sources can have significant environmental impacts. The process typically involves the use of large amounts of water, energy, and chemicals, which can result in the production of toxic waste and emissions. The disposal of this waste can have negative impacts on water quality and soil health, and can contribute to air and water pollution. There is ongoing research to develop more environmentally sustainable methods for extracting rare earth elements from bastnasite and other sources.


    Bastnasite is a valuable mineral with important industrial applications as a source of rare earth elements. Its physical properties, formation, and occurrence make it a unique and significant mineral in the global mining industry. However, its extraction and processing pose significant environmental challenges that require ongoing attention and innovation.

    • Feel free to to “make an offer” on our other items :)

      We Accept Payments through

      • Paypal

      • Direct Deposit

      • Credit Cards

Este texto fue traducido automáticamente. ¿Mostrar original?
No has pujado en esta subasta.
$1,500.00 $213 AHORRAR $1,287
Envío $35.00
4 Días vía FedEx

15 bids colocados hasta ahora

Reserva no cumplida

$212 santos77
$211 ktatiana
$200 herbert
$150 10spro
$139 herbert
$138 deirdreb
$137 grandidierite
$105 grandidierite
$88 grandidierite
$34 grandidierite
$28 grandidierite
$25 grandidierite
$23 grandidierite
$21 manbeige
$1 robinslove
Añadir a lista de seguimiento Hacer una pregunta * Todos los precios en USD

Información de auditoría

Moderator_title ha auditado esta Gemstone Sheriff y ha encontrado lo siguiente: Ver informe

Precios y detalles

Incremento de oferta $1
Precio inicial $1
ID de subasta 590523
Vigilantes 27 viendo
Visto 4,506 veces
Empieza 29th May 2023 5:31am PDT
Finaliza 12th Jun 2023 5:31am PDT

Seguro de envió

Proveedor Envío Tránsito
Express Shipping $55.00 7 dias
FedEx $35.00 4 dias
Registered Shipping $10.00 21 dias
Seguro de envío $21.30 de todos los proveedores (opcional)

detalles de Naturalspectragems

También te puede interesar