[About Us] [Products] [Fluorescent Mineals] [Contact Us] UVTools is a supplier of affordable ultraviolet lamps and fluorescent minerals Our customers include mineral dealers, gift shops, and museums worldwide We provide an array of shortwave, midwave, and longwave lamps at the best price! General Britholite-(Ce) Information(Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) |
Molecular Weight = 762.67 gm |
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Calcium 14.71 % Ca 20.59 % CaO |
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Lanthanum 7.29 % La 8.54 % La2O3 |
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Cerium 16.53 % Ce 19.37 % Ce2O3 |
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Thorium 18.25 % Th 20.77 % ThO2 |
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Silicon 9.94 % Si 21.27 % SiO2 |
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Phosphorus 2.03 % P 4.65 % P2O5 |
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Hydrogen 0.11 % H 0.94 % H2O |
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Neodymium 3.78 % Nd 4.41 % Nd2O3 |
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Oxygen 26.85 % O |
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Fluorine 0.50 % F 0.50 % F |
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F -0.21 % -O=F2 |
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100.00 % 104.44 % = TOTAL OXIDE |
Ca2.8Ce0.9Th0.6La0.4Nd0.2Si2.7P0.5O12(OH)0.8F0.2 |
In nepheline syenites, pegmatites and contact deposits related to them. |
Valid Species (Pre-IMA) 1901 |
Julianehaab, South Greenland. Link to MinDat.org Location Data. |
From the Greek for weight, in allusion to its density and the content of Ce. |
Britholite-(Ce) + Pronunciation |
Beckelite |
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Beckelite-(Ce) |
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ICSD 33858 |
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Lessingite |
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Lessingite-(Ce) |
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PDF 31-892 |
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Pravdite |
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Britholite-(Ce) Crystallographya:c = 1:0.73001 |
a = 9.63, c = 7.03, Z = 2; V = 564.60 Den(Calc)= 4.49 |
Hexagonal - DipyramidalH-M Symbol (6/m) Space Group: P 63/m |
By Intensity(I/Io): 2.836(1), 3.48(0.8), 2.809(0.8),1.858(0.5), 3.211(0.4), 3.927(0.4), 4.116(0.4), |
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Mouse
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| Physical Properties of Britholite-(Ce)None |
Brown, Greenish brown, Yellow, Resin brown, Black. |
4.2 - 4.7, Average = 4.45 |
Nearly opaque |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Pseudo Hexagonal - Crystals show a hexagonal outline. |
5.5 - Knife Blade |
Adamantine - Resinous |
| Optical Properties of Britholite-(Ce)colorless. |
brown. |
CI meas= 0.018 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1759,KPDmeas= 0.1775,KC= 0.1807 Ncalc = 1.76 - 1.85 Uniaxial (+/-), a=1.77, b=1.81, bire=0.0400. |
| Calculated Properties of Britholite-(Ce)Bulk Density (Electron Density)=4.05 gm/cc |
note: Specific Gravity of Britholite-(Ce) =4.45 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEBritholite-(Ce) = 564.09 barns/electron |
U=PEBritholite-(Ce) x relectron=2,286.14 barns/cc. |
GRapi = 354,674.14 (Gamma Ray American Petroleum Institute Units)
Britholite-(Ce) 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)
85.76 ± 21.44 grams of pure Britholite-(Ce) .
Weight of pure Britholite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.45 gm/cc.* | Britholite-(Ce) Classification52.04.09.01 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O |
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(52.04)with cations in [6] and/or > [6] coordination |
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(52.04.09)Silicate apatites |
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09.AH.25 09 - SILICATES (Germanates) |
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09.A - Nesosilicates |
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09.AH -Nesosilicates with CO3, SO4, PO4, etc. |
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| Other Britholite-(Ce) InformationNAME( Ford32) PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) OPTIC PROP.(AntBidBlaNic2) |
Links to other databases for Britholite-(Ce) : |
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - Ecole des Mines de Paris 7 - GeoScienceWorld 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info 16 - Uranium Minerals 17 - WWW-MINCRYST Search for Britholite-(Ce) using: Visit our Advertisers for Britholite-(Ce) : B & L Fine MineralsDan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Excalibur Minerals Exceptional Minerals Fabre Minerals John Betts Fine Minerals Lapis Mineral Journal Mineral News UV Tools Wrights Rock Shop Translate Britholite-(Ce) Mineral Data : Ask about Britholite-(Ce) here : Print or Cut-and-Paste your Britholite-(Ce) Specimen Label here :
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