[How the Club Works] [Memberships - Junior, Deluxe , and Platinum] [FAQ] [Past Minerals] Join the Club - Junior, Deluxe and Platinum Memberships Available High Quality Minerals Sent to Your Home or School Each Month Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals General Lucasite-(Ce) InformationCeTi2(O,OH)6 |
Molecular Weight = 332.88 gm |
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Cerium 42.09 % Ce 49.30 % Ce2O3 |
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Titanium 28.77 % Ti 47.99 % TiO2 |
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Hydrogen 0.30 % H 2.71 % H2O |
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Oxygen 28.84 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
CeTi2O5(OH) |
In heavy-media concentrates form non-sandy tuff in an olivine lamproite diatreme. |
Approved IMA 1987 |
Argyle AK1 diamondiferous diatreme mine, east Kimberley area, Western Australia. Link to MinDat.org Location Data. |
Named for Hans Lucas, CRA Exploration Pty., Ltd,. Who noted the mineral in concentrates. |
Lucasite-(Ce) |
ICSD 202362 |
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PDF 40-1455 |
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Lucasite-(Ce) Crystallographya:b:c =0.5913:1:1.1155 |
a = 5.178, b = 8.756, c = 9.768, Z = 4; beta = 93.52° V = 442.03 Den(Calc)= 5.00 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/a |
By Intensity(I/Io): 3.376(1), 3.203(0.8), 2.584(0.7), |
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Mouse
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| Physical Properties of Lucasite-(Ce){001} Good |
Brown, Dark brown, Chocolate brown. |
Translucent |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
Striated - Parallel lines on crystal surface or cleavage face. |
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape. |
6-6.5 - Orthoclase-Pyrite |
Resinous |
white |
| Optical Properties of Lucasite-(Ce) CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2642,KC= 0.2688 Ncalc = 2.34 Biaxial (?), b=2.321 |
Weak. |
Gray with brown internal reflections. |
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| Calculated Properties of Lucasite-(Ce)Bulk Density (Electron Density)=4.54 gm/cc |
note: Specific Gravity of Lucasite-(Ce) =5.00 gm/cc. Fermion Index = 0.03 |
Boson Index = 0.97 PELucasite-(Ce) = 219.25 barns/electron |
U=PELucasite-(Ce) x relectron= 994.58 barns/cc. |
GRapi = 40,733.02 (Gamma Ray American Petroleum Institute Units)
Lucasite-(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)
746.73 ±186.68 grams of pure Lucasite-(Ce) .
Weight of pure Lucasite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.00 gm/cc.* | Lucasite-(Ce) Classification08.03.05.01 (08)Multiple Oxides with Nb, Ta, and Ti |
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(08.03)where A (B2O6) |
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(08.03.05)Dana Group |
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04.DH.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DH -With large (± medium-sized) cations; sheets of edge-sharing octahedra |
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| Other Lucasite-(Ce) InformationNAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.72,p1006-1010,1987) OPTIC PROP.(Am.Min.,Vol.72, p1006-1010,1987) |
Links to other databases for Lucasite-(Ce) : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Google Images 5 - Google Scholar 6 - Handbook of Mineralogy (UofA) 7 - MinDAT 8 - MinMax(Deutsch) 9 - MinMax(English) 10 - Mineralienatlas (Deutsch) 11 - QUT Mineral Atlas 12 - Ruff.Info 13 - WWW-MINCRYST Search for Lucasite-(Ce) using: Visit our Advertisers for Lucasite-(Ce) : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Lucasite-(Ce) Mineral Data : Ask about Lucasite-(Ce) here : Print or Cut-and-Paste your Lucasite-(Ce) Specimen Label here :
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