• Monazite - Wikipedia

    en.wikipedia.org/wiki/Monazite monazite-, (Nd,La,Ce)PO 4, monazite-, (Sm,Gd,Ce,Th)PO 4. The elements in parentheses are listed in the order of their relative proportion within the mineral: lanthanum is the most common rare-earth element in monazite-(La), and so forth.
  • Monazite-(La) - Wikipedia

    en.wikipedia.org/wiki/Monazite-(La) Monazite-(La) is a relatively rare representative of the monazite group, with lanthanum being the dominant rare earth element in its structure. As such, it is the lanthanum analogue of monazite-(Ce), monazite-(Nd), and monazite-(Sm).It is also the phosphorus analogue of gasparite-(La). The group contains simple rare earth phosphate minerals with the general formula of ATO 4, where A = Ce, La ...
  • Monazite | mineral | Britannica

    www.britannica.com/science/monazite Monazite, phosphate mineral, cerium and lanthanum phosphate, (Ce, La)PO4, that is the major commercial source of cerium. Occurring as small, brown, resinous, rather heavy crystals in granitic and gneissic rocks and their detritus (called monazite sands), monazite frequently contains 10–12 percent
  • Monazite-(La) Mineral Data

    webmineral.com/data/Monazite-%28La%29.shtml Monazite-(La) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. Greater than 70 Bq / gram. Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 332.06 ± 83.01 grams of pure Monazite-(La) .
  • Monazite-(La): Mineral information, data and localities.

    www.mindat.org/min-2752.html Monazite-(La) Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures La(PO4) American Mineralogist 80 21-26: 1995: 0: 293:
  • Monazite: A rare-earth phosphate mineral.

    geology.com/minerals/monazite.shtml What is Monazite? Monazite is a rare phosphate mineral with a chemical composition of (Ce,La,Nd,Th)(PO 4,SiO 4).It usually occurs in small isolated grains, as an accessory mineral in igneous and metamorphic rocks such as granite, pegmatite, schist, and gneiss.These grains are resistant to weathering and become concentrated in soils and sediments downslope from the host rock.
  • Monazite-(La) Mineral Data

    webmin.mindat.org/data/Monazite-(La).shtml Concentration of Monazite-(La) per GRapi unit = 10.92 (PPM) Monazite-(La) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 332.06 ± 83.01 grams of pure Monazite-(La) .
  • Monazite-(La) (La Ce Nd)PO4 - Handbook of Mineralogy

    www.handbookofmineralogy.org/pdfs/monazite-(La).pdf Monazite-(La) (La,Ce,Nd)PO4 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic. Point Group: 2/m. [Crystals typically tabular on {100},maybe
  • Monazite-(Ce) Mineral Data

    webmineral.com/data/Monazite-(Ce).shtml General Monazite-(Ce) Information : Chemical Formula: (Ce,La,Nd,Th)PO4 : Composition: Molecular Weight = 240.21 gm Lanthanum 14.46 % La 16.95 % La 2 O 3: Cerium 29.17 % Ce 34.16 % Ce 2 O 3: Thorium 4.83 % Th 5.50 % ThO 2: Phosphorus 12.89 % P 29.55 % P 2 O 5: Neodymium 12.01 % Nd 14.01 % Nd 2 O 3: Oxygen 26.64 % O: 100.00 % 100.17 % = TOTAL OXIDE
  • MONAZITE (Cerium Lanthanum Thorium Neodymium Yttrium ...

    www.galleries.com/monazite The differences in the formula represent the greater percentages of certain elements in the mineral. The first element listed in the parenthesis is the element with the greater percentage in the mineral; so that monazite-(La) is greatly enriched in lanthanum, etc. Monazite-(Ce) is not only enriched in cerium it is also by far the most common of the three and is probably the actual mineral when ...